Thermochemical Studies of Nitrides, Oxynitride, and Oxide Ceramic Materials.(Report for July 1, 1997-June 30, 2003).

Technical Information Center Oak Ridge Tennessee

关键词: Thermochemistry;    Nitrides;    Oxynitrides;    Calorimetry;    Solid electrolytes;   

RP-ID  :  DE2005836058

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

The goals are: to develop high temperature oxide melt solution calorimetric techniques for a variety of nitrides and oxynitrides; to determine thermodynamics of silicon nitride and of ternary phases in rare earth oxide-silica-alumina-nitrogen systems relevant to silicon nitride processing, thermal barrier coatings, and other applications; to develop systematic understanding of the energetics of oxygen-nitrogen substitution, often coupled with altervalent cation substitution, in a variety of oxynitride systems; and to measure enthalpies of formation of a number of binary and ternary nitrides, often containing transition metals, and to begin to develop a systematic understanding of structure-energy relations analogous to that developed for oxide compounds.