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BULLETIN OF THE CHINESE CERAMIC SOCIETY ›› 2021, Vol. 40 ›› Issue (7): 2360-2367.

• Ceramics • Previous Articles     Next Articles

Research Progress on Synthesis of γ-AlON Ceramic Powders

LI Ke, YANG Zhangfu, LI Xinzhu, ZHU Chaodong, XIAO Meihui, ZHANG Junjie, BU Guoxiu   

  1. School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China
  • Received:2021-01-27 Revised:2021-03-01 Online:2021-07-15 Published:2021-08-04

Abstract: Transparent γ-AlON ceramics have the advantages of high hardness, good chemical resistance and high optical transmittance, and have extensive application prospects in national defense and commercial fields. Whereas, high-purity single-phase γ-AlON powders with less agglomeration, uniform distribution of particle size are critical in sintering highly transparent γ-AlON ceramics. In this paper, Al2O3-AlN phase diagrams and thermodynamic calculation results of γ-AlON are briefly introduced. And then, the research progress of γ-AlON powders synthesized by high temperature solid-state reaction, aluminothermic reduction nitridation, and carbothermal reduction nitridation, respectively, is reviewed. Finally, the future synthesis technologies for γ-AlON powder with <100 nm size are proposed.

Key words: aluminum oxynitride, powder synthesis, high temperature solid-state reaction, aluminothermic reduction nitridation, carbothermal reduction nitridation

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