Cr2O3铝热还原制备Cr2O3-Al2O3-Cr金属陶瓷的热分析  

Thermal Analysis of Preparation Cr_2O_3-Al_2O_3-Cr Ceramet by Al Deoxidization Chromium Oxide

作　　者：钱跃进[1,2] 蒋明学[1] 

机构地区：[1]西安建筑科技大学材料科学与工程学院,陕西西安710055 [2]洛阳理工学院材料科学与工程系,河南洛阳471023

出　　处：《硅酸盐通报》2009年第2期328-331,340,共5页Bulletin of the Chinese Ceramic Society

摘　　要：本文从热力学方面讨论金属Al还原Cr2O3反应,认为其是自蔓燃反应,在特定条件下该反应生成金属陶瓷而不生成CrO。采用DTA确定反应发生温度,并从DTA曲线近似计算该反应的活化能E=1093.822kJ/mol。In this article, the reduction reaction of chromium oxide by metal A1 is discussed from thermodynamic factor, and then confirm its being a self-propagating high-temperature synthesis. The production is ceramet other than CrO at special condition. And then the reaction temperature is confirmed by DTA technical, further more the activation enthalpy is calculated approximately by DTA curve.

关 键 词：热力学 自蔓燃合成 活化能 金属陶瓷 

分 类 号：TQ174.758[化学工程—陶瓷工业]