期刊文献+
任意字段
题名或关键词
题名
关键词
摘要
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息
共找到1,921篇文章
< 1 2 … 97 >
每页显示 20 50 100
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
显示方式：
Suppression of Ag dewetting and sinterability improvement of submicron Ag-coated Cu particles as fillers in sintering paste by surface modification with stearic acid 认领 引用
1
作者 Yeongjung KIM Yong-Sung EOM +1 位作者 Kwang-Seong CHOI Jong-Hyun LEE 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2025年第6期2008-2020,共13页
Four types of submicron Ag-coated Cu particles with different Ag contents were prepared as sintering paste fillers,and the Ag contents of the particles were measured to be 10,20,30,and 40 wt.%.Four types of particles(... Four types of submicron Ag-coated Cu particles with different Ag contents were prepared as sintering paste fillers,and the Ag contents of the particles were measured to be 10,20,30,and 40 wt.%.Four types of particles(in order of increasing Ag content:A10,A20,A30,and A40)were surface-modified with stearic acid,to suppress the Ag shell dewetting and improve sinterability.The surface-modified particles were mixed with a polyol-based solvent to fabricate a resin-free paste.Subsequently,the pastes were screen-printed onto a slide glass and sintered at 250°C in a nitrogen atmosphere for 1-10 min to form an electrode.The electrical resistivity of the sintered film as a function of sintering time was measured using a four-point probe.All the four surface-modified Cu@Ag particles with different Ag contents exhibited decreased electrical resistivity.Particularly,the largest difference in values after and before the surface modification was observed for A40 with the highest Ag content;the electrical resistivities of the initial and surface-modified particles were 1.51×10-4 and 6.67×10-5Ω·cm,respectively,after sintering for 10 min.The findings of this study confirmed that the surface modification using stearic acid effectively suppressed the dewetting of the Ag shell and improved the sinterability of the submicron Cu@Ag particles. 展开更多
关键词 submicron Ag-coated Cu particle sintering dewetting surface modification stearic acid electrical resistivity
暂未订购 下载PDF
Sinterability of Zirconia Top Coat of Investment Mold for Ti Alloy 认领 引用 被引量：1
2
作者 Yuyong CHEN Xiumei QI +1 位作者 Xuezhu MA Huiguang WANG and Jing TIAN School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China 《Journal of Materials Science & Technology》 SCIE EI CAS 2001年第1期71-72,共2页
In this paper. zirconia is used as top mold material for Ti investment casting. Top mold samples are made by proper mold building technology. The effect of different sintering temperature on chemical composition, micr... In this paper. zirconia is used as top mold material for Ti investment casting. Top mold samples are made by proper mold building technology. The effect of different sintering temperature on chemical composition, microstructure and residual bending strength of the top mold sample is Studied. The volume and homogeneity of the air holes in the top mold are determined by sintering temperature. and finally determined the residual bending strength of the mold sample was determined. 展开更多
关键词 Mold Ti Sinterability of Zirconia Top Coat of Investment Mold for Ti Alloy
暂未订购 下载PDF
Particle Size Distribution,Powder Agglomerates and Their Effects on Sinterability of Ultrafine Alumina Powders 认领 引用 被引量：3
3
作者 Renjie ZENG B.Rand 《Journal of Materials Science & Technology》 SCIE EI CAS 2000年第4期393-396,共4页
An intensive study of the particle size distribution of four commercial ultrafine alumina powders to obtain information about the powder agglomeration and relate them to the compactibility and the sinterability has be... An intensive study of the particle size distribution of four commercial ultrafine alumina powders to obtain information about the powder agglomeration and relate them to the compactibility and the sinterability has been made. 展开更多
关键词 rate Particle Size Distribution,Powder Agglomerates and Their Effects on Sinterability of Ultrafine Alumina Powders AKP than
暂未订购 下载PDF
DEPENDENCE OF SINTERABILITY ON STATE OF AGGLOMERATION OF ULTRAFINE ZrO_2,(Y_2O_3) POWDERS 认领 引用
4
作者 Rongde, Ge Zhihong, Liu +2 位作者 Huiguang, Chen Duomo, Zhang Tiancong, Zhao 《中国有色金属学会会刊：英文版》 1995年第3期37-40,44,共4页
DERSDEPENDENCEOFSINTERABILITYONSTATEOFAGGLOMERATIONOFULTRAFINEZrO_2，（Y_2O_3）POWDERS￥Ge，Rongde；Liu，Zhihong；Chen，Huiguang；Zhang，...
关键词 zirconia ultrafine powder agglomeration sinterability
暂未订购 下载PDF
A Comparison Study of Sinterability and Electrical Properties for Microwave and Conventional Sintered Mn0.43Ni0.9CuFe0.67O_4 Ceramics 认领 引用 被引量：2
5
作者 Xianjing Jin Aimin Chang +1 位作者 Huimin Zhang Dongyan Zhang 《Journal of Materials Science & Technology》 SCIE EI CAS 2010年第4期344-350,共7页
In this paper, a quaternary system of Mn0.43Ni0.9CuFe0.67O4 negative temperature coefficient （NTC） thermistor ceramic prepared by solid/solid reaction was sintered by microwave and conventional method, respectively.... In this paper, a quaternary system of Mn0.43Ni0.9CuFe0.67O4 negative temperature coefficient （NTC） thermistor ceramic prepared by solid/solid reaction was sintered by microwave and conventional method, respectively. To characterize the sinterability of the samples, the densification parameter, porosity and grain size distribution of the bulk were determined. The crystal structure, phase compositions, morphology and impedance of the samples were analyzed by X-ray diffraction （XRD）, scanning electron microscopy （SEM）, energy-dispersive spectroscopy （EDS） and impedance analysis. The experimental results confirmed that the sinterability and electrical properties of ceramics were homogenously improved by microwave sintering. 展开更多
关键词 Microwave sintering Mn0.43Ni0.9CuFe0.67O4 Sinterability Electrical Negative temperature coefficient （NTC）
暂未订购 下载PDF
Particle size dependent sinterability and magnetic properties of recycled HDDR Nd-Fe-B powders consolidated with spark plasma sintering 认领 引用 被引量：6
6
作者 Awais Ikram Farhan Mehmood +6 位作者 Richard Stuart Sheridan Muhammad Awais Allan Walton Anas Eldosouky Saso Sturm Spomenka Kobe Kristina Zuzek Rozman 《Journal of Rare Earths》 SCIE EI CAS CSCD 2020年第1期90-99,共10页
The dependence of the magnetic properties on the particle size of recycled HDDR Nd-Fe-B powders was investigated,with the aim to assess the reprocessing potential of the end-of-life scrap magnets via spark plasma sint... The dependence of the magnetic properties on the particle size of recycled HDDR Nd-Fe-B powders was investigated,with the aim to assess the reprocessing potential of the end-of-life scrap magnets via spark plasma sintering(SPS).The as received recycled HDDR powder has coercivity(Hci)=830 kA/m and particles in the range from 30 to 700 μm(average 220 μm).After burr milling,the average particle size is reduced to 120 μm and subsequently the Hci of fine(milled) powder was 595 kA/m.Spark plasma sintering was exploited to consolidate the nanograined HDDR powders and limit the abnormal grain coarsening.The optimal SPS-ing of coarse HDDR powder at 750℃for 1 min produces fully dense magnets with Hci=950±100 kA/m which further increases to 1200 kA/m via thermal treatment at 750℃for 15 min.The burr milled fine HDDR powder under similar SPS conditions and after thermal treatment results in Hci=940 kA/m.The fine powder is further sieved down from 630 to less than 50 μm mesh size,to evaluate the possible reduction in Hci in relation to the particle size.The gain in oxygen content doubles for 200 μm).The XRD analysis for fractionated powder indicates an increase in Nd2O3 phase peaks in the finer(200 μm) to 460 kA/m in the fine sized particles(200 μm) is higher than 930 kA/m and it falls abruptly to just 70 kA/m for the fine sized particles(1000 kA/m only up to 100 μm sized fractions with>90% sintered density.The full densification(>99%) is observed only in the coarse fractions.The loss of coercivity and lack of sinterability in the fine sized particles(<100 μm) are attributed to a very high oxygen content.This implies that during recycling,if good magnetic properties are to be maintained or even increase the HDDR powder particles can be sized down only up to≥100 μm. 展开更多
关键词 Reprocessing end-of life scrap Rare earth permanent magnets HDDR Nd2Fe14B Recycling Spark plasma sintering
暂未订购 下载PDF
Improvement of True Green Porosity, Sinterability and Microstructure in Alumina Ceramics by Filter Pressing 认领 引用 被引量：1
7
作者 RenjieZENG B.Rand 《Journal of Materials Science & Technology》 SCIE EI CAS 2005年第1期105-108,共4页
Comparison between filter pressing and isostatic pressing for submicrometer alumina powder has been systematically made. Obvious improvements in true porosity, sintering behaviour, and microstructure of green compacts... Comparison between filter pressing and isostatic pressing for submicrometer alumina powder has been systematically made. Obvious improvements in true porosity, sintering behaviour, and microstructure of green compacts without cracking and in agglomeration of final ceramics have been achieved. 展开更多
关键词 Porosimetry Agglomerate Sintering dilatometry pH PEG
暂未订购 下载PDF
Relationship between Atmospheric Dew Point and Sinterability of Al-Si Based Alloy 认领 引用
8
作者 A. Manonukul A. Salee 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2013年第1期70-76,共7页
Al-Si based alloys are interestingly used to produce automotive components. Fabrication of such components by powder metallurgy （PM） has been developed continuously. During PM, several parameters affect the sinterab... Al-Si based alloys are interestingly used to produce automotive components. Fabrication of such components by powder metallurgy （PM） has been developed continuously. During PM, several parameters affect the sinterability of the aluminium powder, including atmospheric dew point which is regarded as one of the crucial parameters. The objective of this work was to investigate the effect of the atmospheric dew point on the sinterability of AI-14.9Si-2.4Cu-0.55Mg by studying the sintering characters obtained under various atmospheric dew points. The aluminium alloy powder was pressed into tensile specimens and subsequently sintered in a nitrogen atmosphere at 560 ℃ for 60 min with varied atmospheric dew points. The results show that as the dew point decreased, the sintered properties were improved. The atmospheric dew point of -38.4 ℃ is sufficient to obtain good sintering characters and it is achievable in a commercial furnace. 展开更多
关键词 Aluminium alloys Sintering Mechanical characterisation Atmospheric dew point
暂未订购 下载PDF
Rare-earth Cerium Additives for Sinterability of Anorthite-Diopside Ceramics 认领 引用
9
作者 LIU Jie GAO Zhijian ZHANG Xiangwen 《China's Refractories》 CAS 2018年第2期18-25,共8页
Anorthite -diopside ceramics were prepared by sintering iron ore railings, calcium carbonate, and silicon dioxide. Rare-earth cerium nitrate was evaluated as a sintering additive for the ceramics, whose mass percentag... Anorthite -diopside ceramics were prepared by sintering iron ore railings, calcium carbonate, and silicon dioxide. Rare-earth cerium nitrate was evaluated as a sintering additive for the ceramics, whose mass percentage was 3% , 5%, 7% , 9% , and 11% , respectively. The sinterability of anorthite - diopside ceramics during heat treatment was confirmed hy X-ray diffiaction, transmission^scanning electron micrascopy, thermogravi- metric analysis- differential thermal analysis, and hotstage microscopy, respectively. The obtained results show that the density of ceramics gradnally increases, while the sintering temperature and sintering activation energy of anorthite -diopside ceramics are notably decreased with the increasing cerium content. Rare-earth cerium not only is beneficial to the complete reaction of raw materials, but a/so can accelerate the mass transfer process through forming eutectic phase with aluminum. 展开更多
关键词 anorthite diopside cerium eutectic phase sintering
暂未订购 下载PDF
SINTERABILITY EXPERIMENTS OF PORTAND CEMENT WITH IRON-TAILINGS AS RAW MATERIALS 认领 引用
10
作者 J.Z.Wang and Y.H.Zhao Shenyang Architectural and Civil Engineering Institute, Shenyang 110015,China 《Acta Metallurgica Sinica(English Letters)》 EI CAS 1999年第5期1059-1063,共5页
The sinterability of Portland Cement with iron tailings as raw materials are studied. Experimental results showed that iron tailings, owing to the existences of the trace elements, play an important role in improving ... The sinterability of Portland Cement with iron tailings as raw materials are studied. Experimental results showed that iron tailings, owing to the existences of the trace elements, play an important role in improving the sinterability of the raw meals and decreasing the calcination temperature. 展开更多
关键词 iron tailings sinterability portland cement trace elements
暂未订购 下载PDF
Effect of TiO_2 on the Sinterability and Microstructure of Mullite Sythesized from Al(OH)_3 and SiO_2 认领 引用
11
作者 LIANG Yonghe YIN Yucheng WU Yunyun WANG Jibao 《China's Refractories》 CAS 2006年第2期3-6,共4页
Using analytical pure Al（ OH）3 , SiO2 , TiO2 as raw materials, effect of TiO2 on the sinterability and microstructure of mullite synthesized from Al （ OH）3 and SiO2 was investigated in this paper by XRD , SEM and ... Using analytical pure Al（ OH）3 , SiO2 , TiO2 as raw materials, effect of TiO2 on the sinterability and microstructure of mullite synthesized from Al （ OH）3 and SiO2 was investigated in this paper by XRD , SEM and EPAX. Results show that TiO2 can promote the sintering property when the amount is below 6%, the sinterability of samples becomes better with the increase of the amount of TiO2, microstructure of samples densify gradually, and the best effect can be achieved when the amount of TiO2 is 6%. It was shown by XRD analysis that no Al2TiO5 present when the amount of TiO2 is below 6%, TiO2 existed in the form of solid-solution and glass phase; When the amount of TiO2 is up to 6%, the sinterability of samples becomes worse with the increase of TiO2 added, microstructure of samples began to loosen, Al2TiO5 can be observed in samples and its amount increase with the increase of TiO2. 展开更多
关键词 Mullite sinterability TiO2 Microstructure
暂未订购 下载PDF
Particle Size Control, Sinterability and Piezoelectric Properties of BaTiO3Prepared by a Novel Composite-Hydroxide-Mediated Approach 认领 引用 被引量：1
12
作者 Yahong Xie Takesi Kimura +4 位作者 Shu Yin Takatoshi Hashimoto Yuichi Tokano Atsushi Sasaki Tsugio Sato 《Materials Sciences and Applications》 2011年第7期757-763,共7页
The size of BaTiO3 particles was controlled by adjusting the molar ratio of the starting materials (BaCl2 + TiO2) to mineralizer (NaOH + KOH) during a composite-hydroxide-mediated approach using a novel hydrothermal r... The size of BaTiO3 particles was controlled by adjusting the molar ratio of the starting materials (BaCl2 + TiO2) to mineralizer (NaOH + KOH) during a composite-hydroxide-mediated approach using a novel hydrothermal reaction apparatus with a rolling system. The mean particle diameter decreased from 500 to 50 nm with a decrease in the (BaCl2 + TiO2)/(NaOH + KOH) molar ratio from 0.44 to 0.04. The powders were sintered by normal one-step sintering at 1200°C for 5 h and two-step sintering in which temperature was raised to 1200°C at first and then decreased to 1100°C and kept at 1100°C for 5 h. The BaTiO3 particles prepared with the (BaCl2 + TiO2)/(NaOH + KOH) molar ratio of 0.32 and 0.22 showed excellent sinterability and could be sintered to almost full theoretical density by both method. The sintered bodies obtained by both methods showed similarly excellent dielectric and piezoelectric properties. 展开更多
关键词 BaTiO3 Synthesis Low Temperature Sintering Piezoelectric Properties
暂未订购 下载PDF
Microstructure optimization and magnetic properties of sintered Nd-Fe-B via modulation of boron and gallium contents 认领 引用 被引量：1
13
作者 Jingyan Zuo Minggang Zhu +6 位作者 Dongmin Zhang Ziqi Deng Qisong Sun Yaping Wu Xiaolong Song Xian Wu Yikun Fang 《Journal of Rare Earths》 SCIE EI CAS CSCD 2026年第3期841-849,I0004,共9页
The optimization of microstructure represents a significant methodology for enhancing coercivity(Hcj).This paper concentrates on optimizing the microstructure of magnets through the manipulation of the composition of ... The optimization of microstructure represents a significant methodology for enhancing coercivity(Hcj).This paper concentrates on optimizing the microstructure of magnets through the manipulation of the composition of low-melting-point and high-melting-point elements,thereby achieving the objective of augmenting the comprehensive magnetic properties of magnets.The present study is concerned with the microstructure of magnets comprising three distinct Ga and B contents,and the associated changes in their magnetic properties.The findings indicate that when the Ga content is 0.5 wt%and the B content is 0.88 wt%,the coercivity of the magnets is markedly enhanced.This is evidenced by an increase in coercivity from 8.51 to 14.83 kOe,representing a 74.26%rise.Concurrently,the residual magnetization strength of the magnet remains unaltered.This finding provides a crucial foundation for optimizing the overall magnetic properties of the magnets.The microstructural analysis indicates that a reduction in B content coupled with an increase in Ga content leads to the melting of sharp angles on the surface of the main-phase grains,facilitated by low-melting-point rare-earth-rich phases.This process results in the migration of Fe from the grain boundaries(GBs)to the triple junction phases(TJPs),while Nd migrates from the TJPs to the GBs.This migration results in a reduction in the agglomeration of rare-earth-rich elements within the TJPs,thereby increasing the Nd content in the GBs.This increase enhances the wettability of the GBs,while the reduction of Fe content in this phase mitigates the exchange-coupling effect between the main-phase GBs.Consequently,the GBs become more smooth,more homogeneous and more continuous,which ultimately results in an enhancement of the coercivity of the magnets. 展开更多
关键词 Sintered Nd-Fe-B Coercivity Microstructure Rare earths Grain boundaries Triple junction phases
暂未订购 下载PDF
Metallogenic mechanisms of three typical high-basicity sinter:Hematite-type,magnetite-type and vanadium-titanium magnetite-type 认领 引用 被引量：1
14
作者 Bowen Duan Xiuli Han +3 位作者 Tianhang Si Shilong Fang Fengjiu Li Liangping Xu 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2026年第4期1126-1140,共15页
The mineral composition and microstructure critically affect high-basicity sinter quality.Using analytical grade reagents,the formation mechanisms of main minerals and microstructures in high-basicity sinter(hematite-... The mineral composition and microstructure critically affect high-basicity sinter quality.Using analytical grade reagents,the formation mechanisms of main minerals and microstructures in high-basicity sinter(hematite-type,magnetite-type,and vanadium-titanium magnetite-type)during mineralization were analyzed via polarized light microscopy and FactSage.The results indicated that hematite appeared as primary and secondary forms in different sinter types at 900℃.In the heating process,calcium ferrite,magnetite,and perovskite formed at 1150,1280,and 1400℃,respectively,while olivine formed at 1200℃during cooling.From room temperature to1400℃,microstructures evolved from powder-like to porphyritic and skeletal crystal forms.During cooling(1280 to 1100℃),an interlaced-erosion structure was observed.FactSage simulations show that in the low-temperature phase,the liquid composition is closer to the high-basicity CaO–Fe2O3liquid phase region,where silica-ferrite of calcium and aluminum(SFCA)binds with magnetite and hematite to form an interlaced-erosion structure.The porphyritic structure resulted from SFCA melting into the liquid phase,hematite decomposing,and the glass phase cementing magnetite upon quenching.The skeletal crystal structure forms during the high-temperature phase as the high silicate content in the liquid phase increases melting viscosity,reduces local medium concentration,and leads to incomplete crystal growth.This research aims to advance high-basicity sinter metallogenic theory and guide sintering quality improvement. 展开更多
关键词 high-basicity sinter mineralization process interlaced-erosion structure porphyritic structure skeletal crystal structure
暂未订购 下载PDF
High-performance(Y _(1-x )Cex)3Al5O12 ceramics synthesized by spark plasma sintering for high-power laser-driven lighting 认领 引用 被引量：1
15
作者 Simin Gu Zezhong Yang +3 位作者 Huiwang Lian Chonggeng Ma Andrzej Suchocki Jing Wang 《Journal of Rare Earths》 SCIE EI CAS CSCD 2026年第1期67-74,共8页
Highly thermotolerant and photostable luminescent ceramics are attracting great attention as promising luminescent materials for laser-driven lighting.Herein we report high-performance(Y1-xCex)3Al5O12ce... Highly thermotolerant and photostable luminescent ceramics are attracting great attention as promising luminescent materials for laser-driven lighting.Herein we report high-performance(Y1-xCex)3Al5O12ceramics synthesized by spark plasma sintering(SPS).Owing to the advantages of the regular grain particles and clear grain boundaries of ceramic with cubic garnet structure,the SPS-prepared(Y0.95Ce0.05)3Al5O12 ceramic shows high quantum efficiency with IQE of 98.17% and EQE of 70.42%.It also exhibits excellent luminescence thermal stability and the as-synthesized ceramic maintains 95.11% of integral PL intensity at 423 K compared to that at room temperature.Moreover,the(Y0.95Ce0.05)3Al5O12 ceramic can withstand a high laser power density of 21 W/mm2 and emits high-brightness white lighting with a luminous efficiency of 219.39 lm/W.With excellent optical performance,the fabricated (Y0.95Ce0.05)3Al5O12 ceramic can be widely applied as a reliable color converter material for high-power laser-driven lighting. 展开更多
关键词 (Y1-xCex)3Al5O12ceramics Spark plasma sintering(SPS) High-power laser-driven lighting Rare earths
暂未订购 下载PDF
Paving process of nylon powder considering mesoscopic forces in selective laser sintering 认领 引用
16
作者 Xiangwu Xiao Zhenglan Zhang +4 位作者 Shengqiang Jiang Rui Chen Yue Zhang Jinfeng Peng Ruitao Peng 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2026年第1期14-30,共17页
Powder paving is an intermediate process of selective laser sintering(SLS).The dimensional accuracy and mechanical properties of sintered components are directly affected by the quality of the powder paving process,wh... Powder paving is an intermediate process of selective laser sintering(SLS).The dimensional accuracy and mechanical properties of sintered components are directly affected by the quality of the powder paving process,which is closely related to the flow characteristics of the powder and the process parameters of powder paving.This study investigated the simulation and optimization of the nylon powder paving in SLS by combining a discrete-element-method numerical simulation with a process test.A dynamic model was established to describe the flow and paving process of nylon powder at a preheating temperature considering mesoscopic van der Waals and electrostatic forces.The effects of the physical parameters and ambient temperature on the flow characteristics of nylon powder were analyzed,and the intrinsic relationship between the physical parameters of nylon powder,the process parameters of powder paving,and the quality of the powder paving were explored.A multi-objective regression model of the quality of powder paving was established using the response surface methodology,and a genetic algorithm was adopted to optimize the quality of the powder paving.A scientific and intelligent database of the nylon powder paving process in SLS was constructed by matching the process parameters of powder paving and physical parameters of the nylon powder,and the level of the SLS process was improved. 展开更多
关键词 Selective laser sintering Nylon powder Discrete element numerical Spreadability Response surface methodology Multi-objective optimization
暂未订购 下载PDF
Dual-strength mechanisms in low-carbon cold-bound pellets:binder synergy and sinter fines recycling for sustainable ironmaking 认领 引用
17
作者 Xi-Han Zheng Jun-Ying Wan +5 位作者 Tie-Jun Chen Hao-Ran Zhang Jia-Wen Liu Yu Deng Xian-Lin Zhou Jun Zhuang 《Journal of Iron and Steel Research International》 SCIE EI CSCD 2026年第4期288-302,共15页
In pursuit of more efficient low-carbon ironmaking,fulfilling the requirements of blast furnace materials,four types of low-carbon cold-bound pellets were prepared from blended iron ore,which were dually strengthened ... In pursuit of more efficient low-carbon ironmaking,fulfilling the requirements of blast furnace materials,four types of low-carbon cold-bound pellets were prepared from blended iron ore,which were dually strengthened through sintered return fines and binder.The strengthening mechanism of low-carbon cold-bound pellets was discussed based on the analysis of the characterization results including optical microscopy,scanning electron microscopy-energy dispersive spectroscopy,X-ray diffraction and Fourier transform infrared spectroscopy and the reduction performance detection results.The results demonstrate that,when subjected to external forces,the interlocking of returned fines with blended iron ores leads to the formation of a load-bearing skeleton.During the drying process,the binder is dehydrated and condensed to yield a gel network structure,with which the bonding effect is imposed.In contrast to the organic binder PR,the inorganic binder SS ensures a stabler thermal structure and reduction performance for the cold-bound pellets.The comparison of energy consumption and carbon emissions was estimated before and after introducing cold-bound pellets in the process,and it was ascertained that low-carbon cold-bound pellets are able to foster the low-carbon sustainable ironmaking. 展开更多
关键词 Dual strength Sinter fines recycling Binder synergy Sustainable ironmaking Low-carbon ironmaking
暂未订购 下载PDF
Deep understanding of reduction and degradation behavior of iron ore sinter at low temperatures 认领 引用
18
作者 Kang Huang Min Gan +6 位作者 Xiao-Hui Fan Zhi-Yun Ji Gai-Ge Zhao Yi Liu Jia-Fa Xiang Jin-Hua Li Xiao-Long Wang 《Journal of Iron and Steel Research International》 SCIE EI CSCD 2026年第4期276-287,共12页
Low-temperature reduction degradation(LTRD)has long been regarded as a key metallurgical property of iron ore sinter,which exhibits a significant influence on the stability and efficiency of blast furnace operation.Ho... Low-temperature reduction degradation(LTRD)has long been regarded as a key metallurgical property of iron ore sinter,which exhibits a significant influence on the stability and efficiency of blast furnace operation.However,the reduction behavior of sinter under low-temperature conditions is not yet fully understood.The low-temperature reduction behavior of sinter was investigated.The reduction mechanism of sinter under low-temperature conditions was clarified through characterization methods,including X-ray diffraction,microstructural analysis and energy-dispersive X-ray spectroscopy.An interesting phenomenon was found that the reduction degradation index RDI+3.15 of sinter sharply decreased from 86.05%after reducing for 30 min and to 58.6%for 45 min.The reduction behavior of sinter was further investigated using a thermogravimetric furnace.The results showed that the reduction rate initially reached a peak,followed by a sharp decline to a minimum at approximately 10 min.This decrease occurred as a result of the formation of a reaction product layer,which hindered the diffusion of the reducing gas into the interior of the sinter.Subsequently,the reduction rate increased again,reaching a second peak at approximately 40 min.The increase in reduction rate was attributed to the formation of cracks rather than gas diffusion.It was further determined that the primary cause of LTRD is the volumetric expansion induced by the reduction of surface hematite.Moreover,the low-temperature reduction of sinter involved only the transformation of hematite to magnetite,with the overall reduction degree remaining low at only 6.31%. 展开更多
关键词 Iron ore sinter Low-temperature reduction degradation Reduction degradation index Reduction behavior
暂未订购 下载PDF
Realizing Ultrahigh Dielectric Constant With Ultrawide Temperature Stability in Dual-Phase BNT-BST Ceramics by SPS Sintering 认领 引用
19
作者 Zhi-Peng Li Dong-Xu Li +5 位作者 Zong-Yang Shen You Zhang Jia-Mou Wu Yan Li Wen-Qin Luo Chao-Feng Wu 《Rare Metals》 SCIE EI CAS CSCD 2026年第1期535-544,共10页
Ceramic capacitors are critical components in advanced electronic devices,primarily due to their multi-functionalities in energy/information storage and conversion.However,poor temperature stability remains a long-sta... Ceramic capacitors are critical components in advanced electronic devices,primarily due to their multi-functionalities in energy/information storage and conversion.However,poor temperature stability remains a long-standing challenge for practical applications,especially at extremely high-or low-temperature conditions(e.g.,>200℃or<-55℃).In this work,we propose to combine the advantages of paraelectric Ba0.3Sr0.7TiO3(BST)with low Curie temperature and relaxor ferroelectric Bi0.325Na0.325Ba0.105Sr0.245TiO3(BNBST)with high dielectric constant using the spark plasma sintering(SPS)method,aiming to achieve a high and relatively stable dielectric constant over a wide temperature range.The BNBST-0.6BST ceramics exhibit excellent dielectric properties:an ultrahigh dielectric constant of 3912 with the change of less than±15%over an ultrawide temperature range from-90℃to 400℃,significantly exceeding the standard of X9R.Additionally,the BNBST-0.6BST ceramics also achieve a recoverable energy storage density of 3.5 J cm-3 under a moderate electric field of 270 kV cm-1,with excellent stability and reliability.This work demonstrates the potential application of high dielectric constant BNT-based ceramics over an ultrawide temperature range,driving the development of ceramic capacitors in extremely harsh service environments. 展开更多
关键词 BNT energy storage ceramics relaxor ferroelectrics spark plasma sintering X9R capacitor
暂未订购 下载PDF
Sintering bed state optimization model constructed by finite element and intelligent algorithms 认领 引用
20
作者 Ran Liu Huan Jin +4 位作者 Song Liu Xiao-Jie Liu Jian-Hai Hao Jun Zhao Qing Lv 《Journal of Iron and Steel Research International》 SCIE EI CSCD 2026年第4期134-152,共19页
To ensure the uniformity of the gas flow in the sintering material layer,improve the sintering efficiency,and reduce the production energy consumption,it is of great significance to predict the permeability index of t... To ensure the uniformity of the gas flow in the sintering material layer,improve the sintering efficiency,and reduce the production energy consumption,it is of great significance to predict the permeability index of the original material layer in advance.However,how to achieve accurate prediction in line with the actual production environment has always been a challenge.Based on this,deep learning was combined with finite element numerical simulation,and an integrated prediction method with high interpretability and controllability was proposed.This method used the wavelet threshold denoising technology jointly improved based on complete ensemble empirical mode decomposition with adaptive noise(CEEN)to process the original data,so as to improve the data quality.Subsequently,a temporal convolutional network-long short-term memory(TCN-LSTM)model was constructed and trained for permeability prediction.Comparative analysis showed that the proposed model has a higher prediction accuracy than other comparative models,with the coefficient of determination R2 as high as 95%.In the experimental simulation stage,taking a 360 m2 sintering machine of a certain steel plant as the research object,the COMSOL finite element software was used to establish a physical model for process simulation.The results showed that the variation curve of the permeability of the material layer along the depth direction is highly consistent with the measured results,with a relative error of approximately 3.90 and the R2 of 92.38%.In addition,based on the results of finite element numerical simulation,when using the TCN-LSTM model for prediction,the difference between the predicted value and the simulated value is small,with an average relative error of only 4.92%and the R2 of 97.29%,showing a high degree of fitting and matching.Therefore,the method of combining finite element numerical simulation with CEEN-TCN-LSTM can accurately predict the permeability index of the material layer,effectively meeting the dual needs of predicting the permeability in advance and monitoring the change process of the material layer in actual production and providing technical support for the optimization of the sintering process and the production of high-quality sinter. 展开更多
关键词 Permeability index Deep learning Finite element numerical simulation CEEN-TCN-LSTM COMSOL Sintering bed state
暂未订购 下载PDF
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
上一页 1 2 … 97 下一页 到第 页
在线咨询 使用帮助 返回顶部 意见反馈