Changes in Microstructures and Properties of Al2O3/ZrO2 (Y2O3) with Different Content of ZrO2

摘要：

　　Based on preparation of Al2O3/ZrO2 (4Y) by combustion synthesis in high-gravity field,the microstructure transformation and properties of the materials are investigated through adjusting the ZrO2 (4Y) content in the composites.As the content ofZrO2 changed from 37% to 40%,the microstructures of the ceramics transformed the sphere-like tetragonal ZrO2 crystals from the rod-shaped colonies with nanocrystalline structures.Al2O3/33%ZrO2 (4Y) had the maximum relative density,hardness and flexural strength due to the low solidification temperature,the highest volume fraction of the colonies,small-size defect and high fracture toughness,whereas Al2O3/44%ZrO2 (4Y) was somewhat weakened in strength in despite of its highest fracture toughness.

关键词： Al2O3/ZrO2 (Y2O3) composite Combustion synthesis High gravity Rapid solidification

作者: Chuanzeng Pan Long Zhang Zhongmin Zhaoa Zhensheng Qu Quan Yang Xuegang Huang

作者单位: Institute of Advanced Materials, Mechanical Engineering College, Shijiazhuang 050003, China

会议类型: 国际会议

会议名称: The Sixth China International Conference on High-Performance Ceramics(第六届中国先进陶瓷国际研讨会(CICC-6))

会议地点: 哈尔滨

会议语种:英文

页码: 1-4

在线出版日期: 2009-08-16（万方平台首次上网日期，不代表论文的发表时间）