摘要
化学热力学分析对无机材料科学研究和生产实践有重要的指导作用。本文通过热力学分析对镁铝氧氮材料的合成工艺条件进行优化并对其稳定性进行了评估。结果表明:MgAlON合成温度应控制在1600℃以上;MgAlON只能在很小的氧分压下稳定存在,其合成必须在还原气氛下进行,通常采用埋碳方法;MgAlON与C反应被还原为AlN,试样埋碳烧结时应避免试样与碳直接接触。
Thermodynamic analysis is important in research and practical production of inorganic-nonmetallic material. MgAION synthesis technology was optimized and the stability of MgAION was evaluated by means of thermodynamic analysis in this paper. Synthetic temperature must be controlled above 1600℃. The synthesis of MgAION must proceed in reducing atmosphere because MgAION is stabilized in condition of very small parial pressure of oxygen. MgAION must not contact with C when the samples covered up with carbon are sintered because MgAION would react with C to form AIN.
出处
《中国陶瓷工业》
CAS
2007年第2期24-28,共5页
China Ceramic Industry
基金
中国地质大学(武汉)211工程学术交流基金资助项目
