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66篇文章
< 1 2 … 4 >
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：
Extraction of lithium from the simulated pyrometallurgical slag of spent lithium-ion batteries by binary eutectic molten carbonates 认领 引用 被引量：7
1
作者 Hui Dang Zhidong Chang +3 位作者 Hualei Zhou Sihang Ma Min Li Jialing Xiang 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2022年第9期1715-1721,共7页
The effective and low-temperature extraction of lithium from the pyrometallurgical slag of spent lithium-ion batteries(LIBs)remains a great challenge.Herein,potassium carbonate/sodium carbonate(K2CO3/Na2CO_(3... The effective and low-temperature extraction of lithium from the pyrometallurgical slag of spent lithium-ion batteries(LIBs)remains a great challenge.Herein,potassium carbonate/sodium carbonate(K2CO3/Na2CO3),which could form a eutectic molten salt system at 720℃,was used as a roasting agent to extract lithium from pyrometallurgical slag.Lithium was successfully extracted from the slag by K2CO3/Na2CO3 roasting followed by water leaching.Theoretical calculation results indicate that the lengths of Li-O bonds increase after K+/Na+adsorption,resulting in the easy release of Li+from the LiAlSi2O6 lattice after roasting with K2CO3/Na2CO3.Thermogravimetry-differential scanning calorimetry results indicate that the eutectic phenomenon of K2CO3 and Na2CO3 could be observed at 720℃ and that the reaction of the slag and eutectic molten salts occurs at temperatures above 720℃.X-ray diffraction results suggest that Li+in the slag is exchanged by K+in K2CO3 with the concurrent formation of KAlSiO4,while Na2CO3 mainly functions as a fluxing agent.The lithium extraction efficiency can reach 93.87%under the optimal conditions of a roasting temperature of 740℃,roasting time of 30 min,leaching temperature of 50℃,leaching time of 40 min,and wateroasted sample mass ratio of 10:1.This work provides a new system for extracting lithium from the pyrometallurgical slag of spent LIBs. 展开更多
关键词 spent lithium-ion battery lithium recovery silicate structure low roasting temperature binary eutectic carbonates roasting
暂未订购 下载PDF
Na2SO4-NaCl binary eutectic salt roasting to enhance extraction of lithium from pyrometallurgical slag of spent lithium-ion batteries 认领 引用 被引量：4
2
作者 Hui Dang Zhidong Chang +7 位作者 Xue Wu Sihang Ma Yifei Zhan Na Li Wenbo Liu Wenjun Li Hualei Zhou Changyan Sun 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2022年第1期294-300,共7页
Effectively extracting lithium at a relatively low temperature from the slag produced by the pyrometallurgical treatment of spent lithium-ion batteries remains a great challenge,which limits the acquirement of lithium... Effectively extracting lithium at a relatively low temperature from the slag produced by the pyrometallurgical treatment of spent lithium-ion batteries remains a great challenge,which limits the acquirement of lithium.Herein,we proposed a eutectic system to roast slag at a lower temperature based on sodium sulfate-sodium chloride(Na2SO4-NaCl)binary eutectic salts.The optimal roasting conditions are as follows:the slag was roasted at 750℃with a(SO42-+Cl-)/Li+molar ratio of 5:1 for 120 min.Followed by aqueous leaching 5 min at room temperature with a wateroasted samples mass ratio of 30:1,it can get 97.07%lithium extraction efficiency. 展开更多
关键词 Spent lithium-ion battery Lithium recovery Silicate structure Binary eutectic salt roasting
暂未订购 下载PDF
Fabrication, property characterization and thermal performance of composite phase change material plates based on tetradecanol-myristic acid binary eutectic mixture/expanded perlite and expanded vermiculite for building application 认领 引用 被引量：9
3
作者 YANG Hua CHEN Wan-he +1 位作者 KONG Xiang-fei RONG Xian 《Journal of Central South University》 SCIE EI CAS CSCD 2019年第9期2578-2595,共18页
A binary eutectic mixture composed of tetradecanol(TD)and myristic acid(MA)was maximally absorbed into the microstructures of expanded perlite(EP)and expanded vermiculite(EVMT),respectively,through a self-made vacuum ... A binary eutectic mixture composed of tetradecanol(TD)and myristic acid(MA)was maximally absorbed into the microstructures of expanded perlite(EP)and expanded vermiculite(EVMT),respectively,through a self-made vacuum adsorption roller to prepare phase change material(PCM)particle(PCP).Then EP and EVMT-based composite PCM plates were respectively fabricated through a mold pressing method.The thermal property,chemical stability,microstructure and durability were characterized by differential scanning calorimeter(DSC),Fourier transform infrared spectroscope(FT-IR),scanning electron microscope(SEM)and thermal cycling tests,respectively.The results show that both PCPs have high latent heats with 110 J/g for EP-based PCP and more than 130 J/g for EVMT-based PCP,compact microstructure without PCM leakage,stable chemical property and good durability.The research results have proved the feasibility for the vacuum adsorption roller used in the composite PCM fabrication.Results of thermal storage performance experiment indicate that the fabricated PCM plates have better thermal inertia than common building materials,and the thermal storage performance of PCM plates has nonlinearly changed with outside air velocity and temperature increase.Therefore,PCM plates show a significant potential for the practical application of building thermal storage. 展开更多
关键词 thermal storage phase change material expanded perlite expanded vermiculite binary eutectic mixture
暂未订购 下载PDF
Thermal Characterization of Lauric Acid and Stearic Acid Binary Eutectic Mixture in Latent Heat Thermal Storage Systems with Tube and Fins 认领 引用
4
作者 丁磊 WANG Lixiong +2 位作者 Georgios Kokogiannakis Lü Yajun 周卫兵 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2017年第4期753-759,共7页
In order to obtain the suitable phase change material（PCM） with low phase change temperature and improve its heat transfer rate, experimental investigation was conducted. Firstly, different mass ratios of lauric aci... In order to obtain the suitable phase change material（PCM） with low phase change temperature and improve its heat transfer rate, experimental investigation was conducted. Firstly, different mass ratios of lauric acid（LA） and stearic acid（SA） eutectic mixtures were prepared and characterized by differential scanning calorimetry（DSC）. Then, the performance of eutectic mixture during charging process under different fin widths in vertical condition, and performance during charging and discharging processes under different inlet temperature heat transfer fluid（HTF） in horizontal condition were investigated, respectively. The results revealed that the LA-SA eutectic mixture had the suitable phase change temperature and desired latent heat for low-temperature water floor heating system. Wide fins and high inlet temperature HTF significantly enhanced the transfer rate and decreased the melting time. 展开更多
关键词 LA-SA binary eutectic mixture thermal properties heat exchanger heat transfer mechanism
暂未订购 下载PDF
SURFACE COMPOSITE GEAR AND PIPE MADE BY SEPARATED EUTECTIC TECHNOLOGY 认领 引用 被引量：1
5
作者 Cao, Z.Q. Piao, L.Y. +2 位作者 Zhang, X.G. Li, Z. Jin, J.Z. 《Acta Metallurgica Sinica(English Letters)》 EI CAS 2000年第3期883-887,共5页
It is found that the anomalous eutectics can be separated on macroscopic scale by flow caused by electromagnetic stirring, and the separated phase is the leading faceted phase with the solution entropy over 23 J/(mol&... It is found that the anomalous eutectics can be separated on macroscopic scale by flow caused by electromagnetic stirring, and the separated phase is the leading faceted phase with the solution entropy over 23 J/(mol&middotK). By using this technology, a new kind of composite pipe and gear with good abrasive properties were made without adding any reinforced particles. Emphases were paid on the researches about formation mechanism of separated eutectic and abrasive property of the composite pipe or gear. The result shows that the entropy of solution controlling the eutectic microstructure is also valid and useful as a criterion of separated eutectic, and the kind and its chemical scope of the off-eutectic used to make composite can be calculated according to this theory. 展开更多
关键词 Binary alloys Eutectics Gears Microstructure Pipe Rotational flow Separators Solidification
暂未订购 下载PDF
赤藓糖醇/甘露糖醇/MgO复合相变材料的制备与性能评价 认领 引用
6
作者 王迎春 张韵婕 +2 位作者 郭永红 卢桓杰 王弈博 《当代化工》 CAS 2026年第6期1379-1383,共5页
复合相变材料因其高储热密度和低成本优势,在工业余热回收领域展现出良好的应用潜力。通过熔融共混法制备了5种不同质量比的赤藓糖醇/甘露糖醇二元共晶体系,确定在质量比为3.5∶1时材料性能最优,其熔点为106.9℃,熔化潜热为270.4 J·... 复合相变材料因其高储热密度和低成本优势,在工业余热回收领域展现出良好的应用潜力。通过熔融共混法制备了5种不同质量比的赤藓糖醇/甘露糖醇二元共晶体系,确定在质量比为3.5∶1时材料性能最优,其熔点为106.9℃,熔化潜热为270.4 J·g-1,液相平均比热容为3.05 J·g-1·K-1。进一步采用水溶混合法掺入质量分数3%~7%的氧化镁(MgO),实验结果表明,当MgO质量分数为5%时,复合材料综合性能最佳,熔点提升至113℃,导热系数提高16.4%,熔融焓增加42.4%,比热容也显著提升31.9%。 展开更多
关键词 二元共晶糖醇 氧化镁 相变 复合材料 传热 热力学性质 热能储存
暂未订购 下载PDF
Measurement of binary phase diagram of Cu_2S-MoS_2 system 认领 引用 被引量：2
7
作者 陈星宇 赵中伟 +1 位作者 郝明明 刘旭恒 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2013年第1期271-275,共5页
A novel method,bath smelting process,was developed to treat molybdenite concentrate aiming at the existing problems of traditional process.To understand the dissolving behavior of MoS2 in white matte,the binary phase ... A novel method,bath smelting process,was developed to treat molybdenite concentrate aiming at the existing problems of traditional process.To understand the dissolving behavior of MoS2 in white matte,the binary phase diagram of Cu2S-Mo2S was measured by the cooling curve method.The result shows that this system is a simple binary eutectic with a eutectic temperature of（1117.0±3.0）℃ and a eutectic composition of（1.70±0.20）% MoS2 in mass fraction.When the MoS2 addition exceeds 4.48%,MoS2 and Cu2S can form the ternary compound containing CuMo2S3 or Cu2Mo6S8.In the temperature range of copper smelting,1200-1300℃,molybdenite can dissolve in the cuprous sulfide.At 1200℃,the solubility of molybdenite can reach 14.8%. 展开更多
关键词 binary system Cu2S-MoS2 bath smelting process solubility eutectic molybdenite
暂未订购 下载PDF
纳米SiO_2对静电纺LA-PA/PET复合相变纤维形态和热学性能的影响 认领 引用 被引量：8
8
作者 柯惠珍 蔡以兵 +1 位作者 魏取福 乔辉 《功能材料》 EI CAS CSCD 北大核心 2012年第3期309-312,共4页
以月桂酸和棕榈酸二元低共熔混合物(LA-PA)、聚对苯二甲酸乙二酯(PET)和纳米二氧化硅(SiO2)为原料,通过静电纺丝的方法成功制备了新型的LA-PA/PET/SiO2定形相变复合纤维。分别采用扫描电子显微镜(SEM)和差示扫描量热仪(DSC)研究了纳米S... 以月桂酸和棕榈酸二元低共熔混合物(LA-PA)、聚对苯二甲酸乙二酯(PET)和纳米二氧化硅(SiO2)为原料,通过静电纺丝的方法成功制备了新型的LA-PA/PET/SiO2定形相变复合纤维。分别采用扫描电子显微镜(SEM)和差示扫描量热仪(DSC)研究了纳米SiO2对静电纺LA-PA/PET/SiO2复合相变纤维的形貌结构和热学性能的影响。SEM观察结果显示,随着纳米SiO2的加入,复合相变纤维表面呈现出光滑的形态特点,纤维直径有所降低;且随着纳米SiO2含量的增加而逐渐减小。DSC分析结果表明纳米SiO2的含量对复合相变纤维的熔化焓值和结晶焓值有一定的影响,对相变温度没有显著性的影响。 展开更多
关键词 静电纺丝 复合相变纤维 LA-PA二元低共熔物 纳米SiO2 形貌 热学性能
暂未订购 下载PDF
Microstructure and properties of Mg-Al binary alloys 认领 引用 被引量：2
9
作者 ZHENG Wei-chao LI Shuang-shou +1 位作者 TANG Bin ZENG Da-ben 《China Foundry》 CAS 2006年第4期270-274,共5页
The effects of different amounts of added Al, ranging from 1 % to 9 %, on the microstructure and properties of Mg-Al binary alloys were investigated. The results showed that when the amount of added Al is less than 5%... The effects of different amounts of added Al, ranging from 1 % to 9 %, on the microstructure and properties of Mg-Al binary alloys were investigated. The results showed that when the amount of added Al is less than 5%, the grain size of the Mg-Al binary alloys decreases dramatically from 3 097 μm to 151 μm with increasing addition of Al. Further addition of Al up to 9% makes the grain size decrease slowly to 111 μm. The α-Mg dendrite arms are also refined. Increasing the amount of added Al decreases the hot cracking susceptibility of the Mg-Al binary alloys remarkably, and enhances the micro-hardness of the α-Mg matrix. 展开更多
关键词 Mg-Al binary alloys grain size α-Mg dendrite eutectic microstructure hot cracking
暂未订购 下载PDF
MWCNTs对SA/SF/LA-PA复合相变纤维结构与性能的影响 认领 引用
10
作者 狄纯秋 郭静 +2 位作者 管福成 相玉龙 单继成 《大连工业大学学报》 CAS 北大核心 2023年第1期46-52,共7页
以月桂酸和棕榈酸二元低共熔脂肪酸(LA-PA)、海藻酸钠(SA)、丝素蛋白(SF)、多壁碳纳米管(MWCNTs)为原料,以氯化钙为凝固浴,通过湿法纺丝制备复合相变纤维。通过FT-IR表征了MWCNTs含量对复合相变纤维氢键作用的影响,对复合相变纤维表面... 以月桂酸和棕榈酸二元低共熔脂肪酸(LA-PA)、海藻酸钠(SA)、丝素蛋白(SF)、多壁碳纳米管(MWCNTs)为原料,以氯化钙为凝固浴,通过湿法纺丝制备复合相变纤维。通过FT-IR表征了MWCNTs含量对复合相变纤维氢键作用的影响,对复合相变纤维表面形态、力学性能、热性能、蓄热稳定性进行了表征。结果表明,随着MWCNTs含量的增加,复合相变纤维分子间氢键先增大后减小,分子内氢键含量先减小后增大;复合相变纤维的断裂强度先增大后减小,MWCNTs为0.4%时,其断裂强度达到最大值1.53 cN/dtex;复合相变纤维具有适宜的相变温度(17~37℃),相变焓为18~24 J/g;复合相变纤维经100次热循环后具有良好的蓄热耐久性。 展开更多
关键词 二元低共熔脂肪酸 多壁碳纳米管 海藻酸钠 丝素蛋白
暂未订购 下载PDF
二元共晶相变材料对沥青性能影响 认领 引用 被引量：1
11
作者 马峰 庞萌 +2 位作者 周礼 傅珍 代佳胜 《功能材料》 CAS CSCD 北大核心 2025年第10期10206-10212,共7页
有机共晶相变材料因潜热性能优异、相变温度稳定,为沥青路面零热量调温提供了潜力。为了研究共晶相变材料对沥青结合料性能的影响,选用硬脂酸/肉豆蔻酸二元共晶相变材料(SA/MA-PCM)作为相变热管理单元,以不同掺量(2%、4%、6%、8%(质量分... 有机共晶相变材料因潜热性能优异、相变温度稳定,为沥青路面零热量调温提供了潜力。为了研究共晶相变材料对沥青结合料性能的影响,选用硬脂酸/肉豆蔻酸二元共晶相变材料(SA/MA-PCM)作为相变热管理单元,以不同掺量(2%、4%、6%、8%(质量分数))引入SBS改性沥青制备相变改性沥青。基于偏光显微镜和傅里叶红外光谱仪分析二元共晶相变材料的晶体结构和化学结构,通过三大指标、布氏旋转黏度以及动态剪切流变测试分析相变改性沥青的各项性能。结果表明,当SA/MA-PCM掺量增加到8%(质量分数)时,沥青的延度增加,降温速率延缓,低温性能得到改善;布氏黏度和复数模量G*降低,车辙因子G*/sinδ下降和蠕变恢复率R下降,不可恢复蠕变柔量J nr增加,高温抗车辙能力下降;疲劳因子G*·sinδ减小,抗疲劳性能得到改善。 展开更多
关键词 道路工程 相变材料 二元共晶 改性沥青 流变性能
暂未订购 下载PDF
Construction of Solidus Lines of Binary Metal Systems Having a Low Solubility of Components in the Solid Phase 认领 引用
12
作者 A. P. Shcherban O. A. Datsenko G. P. Kovtun 《Open Journal of Metal》 2014年第3期65-71,共7页
The paper presents the calculation results on the construction of solidus lines of phase diagrams for some binary metal systems based on cadmium, zinc and tellurium. The investigations have been carried out using the ... The paper presents the calculation results on the construction of solidus lines of phase diagrams for some binary metal systems based on cadmium, zinc and tellurium. The investigations have been carried out using the phase equilibrium thermodynamics and known liquidus lines. By the calculation method the solidus lines of phase diagrams of the Cd-Na, Cd-Tl, Te-Ga, Te-As, Te-Cu and Zn-Sn systems were constructed in the temperature range from the base component melting point to the eutectic transformation temperature. In the Cd-Tl, Te-As, Te-Cu and Zn-Sn systems a retrograde solubility of the second component in the solid phase was observed. The temperature and maximum solubility values at the retrograde behavior of solidus lines, as well as, the limiting solubility values of components at eutectic transformation in the systems based on Cd, Zn and Te were determined. 展开更多
关键词 Binary Metal System Cadmium Zinc Tellurium Phase Diagram Solidus Line Eutectic Transformation Retrograde Solubility
暂未订购 下载PDF
Temperature-Dependent Rheological Behaviors of Binary Eutectic Mixtures of Sugar Alcohols for Latent Heat Storage:A Comparative Study with Pure Sugar Alcohols 认领 引用 被引量：1
13
作者 SHAO Xuefeng YANG Sheng +2 位作者 CHEN Chenlin FAN Liwu YU Zitao 《Journal of Thermal Science》 SCIE EI CAS CSCD 2021年第6期2002-2014,共13页
The temperature-dependent rheological behaviors of five selected binary eutectic mixture sugar alcohols,with great potential for latent heat storage in the range of 353.15 K to 523.15 K,were investigated.It was found ... The temperature-dependent rheological behaviors of five selected binary eutectic mixture sugar alcohols,with great potential for latent heat storage in the range of 353.15 K to 523.15 K,were investigated.It was found that the rheological behaviors of the mixture sugar alcohols depend on those of the pure compounds as well as their molar ratios.The two mixtures of xylitol(75 mol%)+erythritol and erythritol(84 mol%)+d-mannitol behave like pseudoplastic fluids with typical non-Newtonian shear-thinning behaviors,as indicated by the power law index of 0.99(<1).The mixture of d-mannitol(70 mol%)+d-dulcitol is a nonlinear Bingham fluid,exhibiting a slight yield stress(0.001 Pa to 0.01 Pa)at low shear rates.The rest two mixtures containing the cyclic-structured inositol behave like Herschel-Bulkley fluids.The infinite shear viscosities of the eutectic mixtures over the entire temperature range appear to be higher than those of their respective pure compounds,except for inositol.The mixture of xylitol(75 mol%)+erythritol at its melting point shows higher dynamic viscosity of about 0.546 Pa·s than the values of about 0.396 Pa·s and 0.035 Pa·s for xylitol and erythritol,respectively.In addition,the activation energies of viscous flow of the mixtures,as determined by fitting the dynamic viscosity-temperature curves using the Arrhenius model,also exhibit higher values than those of their pure compounds.The activation energy of viscous flow of the mixture xylitol(75 mol%)+erythritol was determined to be about 92400 J/mol in the supercooled liquid state,while the supercooled liquid xylitol and erythritol have much lower values of 83500 J/mol and 51900 J/mol,respectively.Both the increased dynamic viscosities and activation energies of viscous flow can result in deteriorated crystallization performance during latent heat retrieval. 展开更多
关键词 binary eutectic mixture dynamic viscosity phase change material rheological behavior sugar alcohol latent heat storage
暂未订购 下载PDF
基于Python对二元硝酸盐相变材料计算方法研究 认领 引用
14
作者 周文宇 蔡家斌 +1 位作者 李国民 杨兴旺 《广州化学》 CAS 2025年第5期71-74,I0004,共4页
为解决单一相变材料相变温度固定、无法满足实际需要的问题,提出以硝酸钠、硝酸钾、硝酸锂三种常见的硝酸盐作为基盐,引入低共熔点两侧区域采用不同相互作用系数的新思路计算相图,利用Python软件计算二元体系不同配比的相变温度绘制二... 为解决单一相变材料相变温度固定、无法满足实际需要的问题,提出以硝酸钠、硝酸钾、硝酸锂三种常见的硝酸盐作为基盐,引入低共熔点两侧区域采用不同相互作用系数的新思路计算相图,利用Python软件计算二元体系不同配比的相变温度绘制二元相图,并得到共晶点混合物的温度与组成,将计算结果与相图库数据、以理论体系计算和两侧区域采用相同的相互作用系数的结果进行比较。结果表明使用不同相互作用系数的计算方法在最低共熔点处的配比分别为49%NaNO3-51%KNO3、42.4%LiNO3-57.6%KNO3和46.3%NaNO3-53.7%LiNO3,对应的温度则分别为222.993℃、124.996℃和194.996℃,其获得的结果与相图库数据吻合较好,准确度要远高于另外两种计算方法,更接近熔盐的实际情况。 展开更多
关键词 相变材料 最低共熔理论 Python软件 二元相图计算 硝酸盐
暂未订购 下载PDF
Preparing and Studying of Phase Change Energy Storage Materials 认领 引用 被引量：10
15
作者 尚建丽 李乔明 +1 位作者 王争军 赵鹏 《Journal of Shanghai Jiaotong university(Science)》 EI 2010年第6期668-670,共3页
The thermal energy storage phase change material used for building has been prepared with a few of fatty acids based on the principle of binary low eutectic point. The thermal behaviors such as phase transition temper... The thermal energy storage phase change material used for building has been prepared with a few of fatty acids based on the principle of binary low eutectic point. The thermal behaviors such as phase transition temperature and enthalpy of compound energy storage material are researched through differential scanning calorimeter(DSC) and scanning electron microscope(SEM) . The results show that the thermal energy storage phase change composite material can be used in the wall panels well as its higher latent heat. 展开更多
关键词 binary low eutectic point phase change energy storage material latent heat performance
暂未订购 下载PDF
二元共晶定向凝固的多相场法数值模拟 认领 引用 被引量：11
16
作者 朱耀产 杨根仓 +2 位作者 王锦程 赵达文 樊建锋 《中国有色金属学报》 EI CAS 北大核心 2005年第7期1026-1032,共7页
借助于多相场模型,利用移动盒算法模拟了小Peclet数下二元共晶模型合金的定向凝固过程。同时研究了共晶生长层片间距调整机制。模拟结果表明:当初始层片间距小于最小过冷层片间距时,层片调整通过两相的竞争生长与层片湮没进行;相反,当... 借助于多相场模型,利用移动盒算法模拟了小Peclet数下二元共晶模型合金的定向凝固过程。同时研究了共晶生长层片间距调整机制。模拟结果表明:当初始层片间距小于最小过冷层片间距时,层片调整通过两相的竞争生长与层片湮没进行;相反,当初始层片间距大于最小过冷理论时,层尖的形核分叉生长使层片生长趋于稳定;再现了共晶1λ振荡不稳定性生长,通过分析局部动力学得出1λ振荡不稳定性生长原因为溶质再分配与共晶两相的体积调整。 展开更多
关键词 多相场法 定向凝固 二元共晶
暂未订购 下载PDF
二元Mg-Al合金铸态及ECAP态组织与性能研究 认领 引用 被引量：11
17
作者 王红霞 梁伟 +2 位作者 赵琦 阴耀鹏 赵兴国 《稀有金属材料与工程》 SCIE EI CAS 北大核心 2008年第11期2004-2007,共4页
研究了不同Al含量镁铝二元合金铸态及等通道挤压(ECAP)态组织特征和性能。结果表明:铸态Mg-Al二元合金在含Al(10%~25%,质量分数,下同)范围内,随Al含量增加,α-Mg初晶体积分数逐渐减少,形态由不规则的团絮状变为蔷薇花状,直至小块状;共... 研究了不同Al含量镁铝二元合金铸态及等通道挤压(ECAP)态组织特征和性能。结果表明:铸态Mg-Al二元合金在含Al(10%~25%,质量分数,下同)范围内,随Al含量增加,α-Mg初晶体积分数逐渐减少,形态由不规则的团絮状变为蔷薇花状,直至小块状;共晶组织体积分数剧增,硬脆相β-Mg17Al12呈网状连续分布,α和β两相以共生生长方式成为片层状共晶组织;ECAP能明显破坏硬脆相β-Mg17Al12网状连续分布,细化共晶组织和初晶α,并能使初晶α中析出弥散细小的β,起到弥散强化作用,使不同Al含量的Mg-Al二元合金不仅抗拉强度得到显著提高,而且塑性获得极大改善,尤其是Mg-15Al合金,ECAP后抗拉强度σb从150MPa提高到269.3MPa,延伸率δ由0.05%提高到7.4%。 展开更多
关键词 镁铝二元合金 α-Mg初晶 共晶组织 ECAP 力学性能
暂未订购 下载PDF
二元脂肪酸/SiO_2复合相变储能材料的制备与表征 认领 引用 被引量：36
18
作者 付路军 董发勤 +1 位作者 杨玉山 何平 《功能材料》 EI CAS CSCD 北大核心 2013年第4期548-551,共4页
针对适用于建筑领域的相变储能材料,选用癸酸(CA)分别与月桂酸(LA)、肉豆蔻酸(MA)和棕榈酸(PA)复合制备了二元低共熔脂肪酸作为储能材料。通过施罗德公式计算得到二元低共熔脂肪酸的混合比例和理论相变温度。基于CA-MA优异的性能,采用溶... 针对适用于建筑领域的相变储能材料,选用癸酸(CA)分别与月桂酸(LA)、肉豆蔻酸(MA)和棕榈酸(PA)复合制备了二元低共熔脂肪酸作为储能材料。通过施罗德公式计算得到二元低共熔脂肪酸的混合比例和理论相变温度。基于CA-MA优异的性能,采用溶胶-凝胶法制备CA-MA/SiO2定形相变储能材料。采用FT-IR、SEM、DSC、TG对CA-MA/SiO2的结构、形貌、热性能和热稳定性进行了分析。结果表明,制备的3种二元低共熔脂肪酸适合于建筑领域。CA-MA较好地被固定在SiO2多孔网络中,储能材料和SiO2之间仅为物理结合,没有新物质的生成。定形相变储能材料的相变温度为20.96℃,相变焓为70.17J/g,相变温度适中,相变焓高,热稳定性好。 展开更多
关键词 二元低共熔脂肪酸 复合相变材料 储能 溶胶-凝胶法
暂未订购 下载PDF
溶质截留对过冷共晶生长过程的影响 认领 引用 被引量：7
19
作者 赵素 李金富 +1 位作者 刘礼 周尧和 《金属学报》 SCIE EI CAS 北大核心 2008年第11期1335-1339,共5页
以过冷凝固条件下已有的共晶生长理论模型为基础,考虑了快速非平衡凝固条件下会出现溶质截留现象,探讨溶质截留对生长过程的影响.发现溶质截留的引入,增大了共晶生长速度,减小了层片间距和枝晶尖端半径.初始平衡溶质分配系数越小,溶质... 以过冷凝固条件下已有的共晶生长理论模型为基础,考虑了快速非平衡凝固条件下会出现溶质截留现象,探讨溶质截留对生长过程的影响.发现溶质截留的引入,增大了共晶生长速度,减小了层片间距和枝晶尖端半径.初始平衡溶质分配系数越小,溶质截留对过冷共晶生长过程的影响越显著. 展开更多
关键词 二元共晶 过冷 溶质截留 溶质平衡分配系数
暂未订购 下载PDF
DNAN/TNAZ最低共熔物的制备及性能 认领 引用 被引量：9
20
作者 寇勇 宋小兰 +3 位作者 刘丽霞 王毅 刘晨丽 郭凯歌 《火炸药学报》 EI CAS CSCD 北大核心 2020年第5期531-536,I0004,共6页
制备了2,4-二硝基苯甲醚(DNAN)和1,3,3-三硝基氮杂环丁烷(TNAZ)摩尔比分别为0∶1、1∶3、1∶2、2∶3、1∶1、3∶2、2∶1、3∶1、1∶0的低共熔物;通过对不同摩尔比的DNAN/TNAZ二元低共熔物进行DSC测试,绘制了T—X与H—X相图;通过相图得出... 制备了2,4-二硝基苯甲醚(DNAN)和1,3,3-三硝基氮杂环丁烷(TNAZ)摩尔比分别为0∶1、1∶3、1∶2、2∶3、1∶1、3∶2、2∶1、3∶1、1∶0的低共熔物;通过对不同摩尔比的DNAN/TNAZ二元低共熔物进行DSC测试,绘制了T—X与H—X相图;通过相图得出了DNAN/TNAZ最低共熔体系的摩尔比,并对其最低共熔物进行了热动力学分析、XRD分析以及TG-MS分析,同时对不同摩尔比的DNAN/TNAZ低共熔物进行了机械感度测试以及爆轰性能计算。结果表明,当DNAN与TNAZ摩尔比为56.65∶43.35时,获得最低共熔物,其最低共熔点为65.14℃,最低共熔物的热分解反应速率常数较小(k=0.40s-1),反应过程需要吸收热量,活化自由能(ΔG≠)为20.29kJ/mol,活化焓(ΔH≠)为61.92kJ/mol,活化熵(ΔS≠)为78.76J/(mol·K),反应过程熵值增加;XRD测试表明最低共熔物在35.43°处产生了一定的分子间作用力;热分解的主要产物为H2O、C2H6、NO、N2、CO、N2O、CO2、CH4,同时还有少量的NO2。DNAN/TNAZ最低共熔物的撞击感度(H50)为56cm,摩擦感度为0,理论爆速为7310.8m/s,理论爆热为6273.7kJ/kg。 展开更多
关键词 物理化学 低共熔炸药 DNAN TNAZ 二元相图 活化自由能 分解产物
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 … 4 下一页 到第 页
在线咨询 使用帮助 返回顶部 意见反馈