Oxidation Properties of Nd-a-Sialon Ceramics

摘要：

Nd-a-sialons with the stoichiometric composition and extra 2wt.％ addition of Nd2O3 in Nd0.333SiIOA12ON15 were synthesized by hot-press sintering. The longtime oxidation resistance of the two ceramics at high temperature was investigated. The oxidation process is very similar,i.e. the weight gain increases linearly at primary stage. and then tends to be constant with prolonging the oxidation time. The oxidation kinetic obeys the parabolic rate law. Inward diffusion of oxygen into ceramics and outward diffusion of metal cations is the main oxidation mechanism. Due to the variation of the content of the added rare earth oxide,the oxidation performance of the two Nd-α-sialon ceramics are also different.

关键词： a-Sialon Oxidation Nd2O3

作者: Feng Ye Chunfeng Liu Yu Zhou Jianmin Zhou

作者单位: Institute for Advanced Ceramics,Harbin Institute of Technology,Harbin 150001,China

会议类型: 国际会议

会议名称: Frist Annual Meeting on Testing and Evaluation of Inorganic Materials(第一届全国无机材料测试与评价学术年会)

会议地点: 南昌

会议语种:英文

页码: 334-337

在线出版日期: 2010-04-28（万方平台首次上网日期，不代表论文的发表时间）