Experimentation and thermodynamic modelling on SrZrO_3  

作　　者：龚伟平 陈腾飞 刘咏 李大建 金展鹏 黄伯云 

机构地区：[1]State Key Laboratory of Powder Metallurgy, Central South University

出　　处：《中国有色金属学会会刊：英文版》2007年第4期739-743,共5页Transactions of Nonferrous Metals Society of China

基　　金：Project(2006AA03Z567) supported by the National High-Tech Research and Development Program of China;Project(33354) supported by the Natural Science Foundation of Guangdong Province, China

摘　　要：Experimental data for the perovskite phase SrZrO3 were subjected to a critical thermodynamic assessment using the CALPHAD approach. Special attention was paid to the structural behavior of SrZrO3 to illustrate, how to select an appropriate thermodynamic model based on crystal structure and chemistry information, how to identify and resolve the inconsistency between various kinds of experimental data, and how to use thermodynamic modeling as a basic tool in the development and optimization of materials and process. Our assessment results in a Gibbs energy function covering the temperature range between 300 K and the melting point, which explains the experimental data within the experimental uncertainty.Experimental data for the perovskite phase SrZrO3 were subjected to a critical thermodynamic assessment using the CALPHAD approach. Special attention was paid to the structural behavior of SrZrO3 to illustrate, how to select an appropriate thermodynamic model based on crystal structure and chemistry information, how to identify and resolve the inconsistency between various kinds of experimental data, and how to use thermodynamic modeling as a basic tool in the development and optimization of materials and process. Our assessment results in a Gibbs energy function covering the temperature range between 300 K and the melting point, which explains the experimental data within the experimental uncertainty.

关 键 词：热力学模型 锆酸锶 钙钛矿型结构 结构变形 

分 类 号：TB3[一般工业技术—材料科学与工程]