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无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

碳热还原含MgAl2O4尖晶石相氧化铝粉末的研究

李亚伟; 李楠; 袁润章+   

  1. 武汉冶金科技大学材料科学与工程学院; 武汉430081; +武汉工业大学新材料研究所; 武汉430070
  • 收稿日期:1996-05-02 修回日期:1996-05-23 出版日期:1997-06-20 网络出版日期:1997-06-20

Carbothermal Reduction Nitridation of Alumina Powder ContAlNing MgAl2O4 Spinel

LI Yawei; LI Nan; YUAN Runzhang+   

  1. Wuhan Yejin University of Science Technology Wuhan 430081 China; +Wuhan University of Technology Wuhan 430070 China
  • Received:1996-05-02 Revised:1996-05-23 Published:1997-06-20 Online:1997-06-20

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摘要： 研究了碳热还原氮化含MgAl2O4相氧化铝的反应过程．结果表明：碳热还原含MgAl2O4相的氧化铝；与引入氧化镁外加剂一样，可以在低温（＜1600℃）下制备尖晶石型氮氧化铝。不同的MgAl2O4尖晶石相含量对反应过程的影响不同，引入量的增加，有利于氮氧化铝相的生成；反应温度的提高，加速了还原氮化反应的过程．不同条件下所制备的氮氧化铝具有不同的晶格常数．

关键词: 碳热还原, 尖晶石, 粉末, 制备

Abstract: The carbothermal reduction nitridation of alumina powder contAlNing MgAl2O4 spinel was investigated. Its results show that a great dcal of aluminum oxynitride spinel could be manufacturedat the temperatures lower than 1600℃ and the content of aluminum oxynitride phase and its compositions in the product strongly depend on the firing temperatures and adding MgAl2O4 spinel.Aluminum oxynitrides resulted from different adding content of MgAl2O4 at varied temperaturespossess different lattice parameters.

Key words: carbothermal reduction, MgAl2O4 spinel, powder, synthesis