Optimization of α-Sialon Microstructure by Heat Treatment

摘要：

　　Nd-doped α-SiAION starting composition (Nd0.33Si9.38Al2.62O1.62N14.38) was prepared by gas pressure sintering at 1825℃ for 3 hrs.In order to explore the effect of post heat treatment on the developments of elongated α-SiAlON grains,sample was heat treated at 1800℃ for 4-12 hrs.It was found that post heat treatments promoted formation of the elongated α-SiAlON grains.The controlling mechanism of grain growth was determined via plotting on a graph the growth in width/length versus time graphics using Image Analysis method.Different growth rates were found between the length and width direction of the α-SiAlON crystals,resulting in anisotropic grain growth in the microstructural development.

关键词： SiAION Heat treatment Image analyze LSW theory

作者: S.Kurama

作者单位: Anadolu University,Department of Materials Science and Engineering,Eskisehir,26555,Turkey

会议类型: 国际会议

会议名称: The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))

会议地点: 长沙

会议语种:英文

页码: 891-893

在线出版日期: 2007-05-10（万方平台首次上网日期，不代表论文的发表时间）