Journal of Inorganic Materials

• Research Paper •     Next Articles

Advances of Abnormal Grain Growth to Toughen A12O3 Ceramics

YANG Wei-You; XIE Zhi-Peng; MIAO He-Zhuo   

  1. State Key Laboratory of New Ceramics and Fine Processing; Tsinghua University; Beijing 100084; China
  • Received:2002-08-12 Revised:2002-09-09 Published:2003-09-20 Online:2003-09-20

Abstract: This paper presented the characterization of microstructure of A12O3 with abnormal grain growth (AGG). The effect of different additives, seeds and introduction of seeds on AGG, microstructure and mechanical property of A12O3 was summarized systematically. The mechanism of AGG under different conditions was discussed. Also, the mechanism to toughen A12O3 ceramics with AGG was interpreted preliminarily.

Key words: Al2O3, abnormal grain growth, additives, seeds, fracture toughness

CLC Number: