材料期刊网

单一及复合表面活性剂对联苯菊酯微乳液的影响

李嘉诚 , QIU Xue-Qing , 冯玉红 , LIN Qiang

应用化学 doi:10.3969/j.issn.1000-0518.2008.08.004

通过对单一及复合型表面活性剂水溶液临界胶束浓度(CMC)和表面张力(γcmc)的测定分析,研究了表面活性剂对以水为介质、环己酮为溶剂形成的联苯菊酯质量分数为2.5%微乳液相行为及稳定性的影响.结果表明,在几种单一非离子表面活性剂中,苯乙烯基苯酚聚氧乙烯聚氧丙烯醚嵌段型非离子表面活性剂EPE的γcmc...

关键词: 表面活性剂 , 微乳液 , 相行为 , 稳定性

Numerical Simulation and Shrinkage Defects Prediction of a Turbine Blade Investment Casting

Jing TIAN , Xiang XUE , Yuebing ZHANG , Yalong GAO , Luzhi LIU , Qin SUN , Shiyou YUAN

材料科学技术（英文）

By adopting the solid modeling software SoldEdge and the enmeshment software SRIFCast as the pre-processing platform, a Ni based alloy turbine blade was three-dimensionally modeled and automatically enmeshed. A software code for numerical simulation of fluid flow and heat transfer was developed. The...

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强旋流中颗粒运动特性的直接数值模拟

桂南 , 樊建人 , 陈松

工程热物理学报

本文采用直接数值模拟计算了Re=669,S=1.42强旋流中的颗粒运动特性.计算的部分流动条件依照SommerfeId & Qiu的实验条件进行模化.模拟的结果揭示了旋流近场的颗粒运动的浓度、速度的时均量和脉动值的统计分布特性.

关键词: 旋流 , 颗粒运动 , 直接数值模拟 , 统计特性

First-principle study of electronic properties of Ti3Si1-xAlxC2 solid solutions

Journal of Physics and Chemistry of Solids

The layered ternary ceramics Ti3SiC2 and Ti3AlC2 are isostructural and can form Ti3Si1-xAlxC2 solid solutions combining the advanced properties of both compounds [H.B. Zhang, Y.C. Zhou, Y.W. Bao, M.S. Li, Improving the oxidation resistance of Ti3SiC2 by forming a Ti3Si0.90Al0.1C2 solid solution, Act...

关键词: ceramics;ab initio calculations;electronic structure;electrical;conductivity;oxidation behavior;mechanical-properties;ti3sic2;temperature;ti3alc2;air;si