Oxidation and Corrosion of Silicon Nitride at 1200℃ and 1500℃

摘要：

　　The effect of different sintering additives on the high temperature oxidation and corrosion behaviour of Si3N4 ceramics is investigated.A corrosion furnace was set up which allows testing of ceramic discs at test temperatures upto 1500℃.It was possible to conduct tests under ambient oxygen conditions,or with increased water vapour as well as testing with corrosive gases such as HCl or SO2.Si3N4 was prepared with MgO,Al2O3,Y2O3 and Al2O3+Y2O3 sintering additives.These discs were subjected to different oxidation and corrosion test conditions at temperatures of 1200℃ and 1500℃ for upto 128 h.The effects that the different corrosion enviroments have on the corrosion resistance of the Si3N4 materials are presented.

关键词： Si3N4 sintering additives corrosion high temperature

作者: Gurdial Blugan Daniela Wittig Sieglinde Zinz Thomas Graule Jakob Kuebler

作者单位: Empa Swiss Federeal Laboratories for Materials Testing and Research,Laboratory for High Performance Empa Swiss Federeal Laboratories for Materials Testing and Research,Laboratory for High Performance

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: 885-887

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）