保温时间对GPS氮化硅陶瓷晶界相及力学性能的影响

无机材料学报

保温时间对GPS氮化硅陶瓷晶界相及力学性能的影响

代建清^1,2; 黄勇¹; 谢志鹏¹; 马天¹; 杨金龙¹; 马景陶¹

1. 清华大学材料科学与工程系北京 100084; 2. 中国科学院物理研究所, 北京 100080

收稿日期:2001-12-03 修回日期:2002-01-14 出版日期:2003-01-20 网络出版日期:2003-01-20

Effects of Holding Time on Intergranular Phase and Mechanical Property of GPS Silicon Nitride Ceramics

DAI Jian-Qing^1,2; HUANG Yong¹; XIE Zhi-Peng¹; MA Tian¹; YANG Jin-Long¹; MA Jing-Tao¹

1.Department of Materials Science and Engineering; Tsinghua University; Beijing 100084; China; 2.Institute of physics; Chinese Academy of Sciences; Beijing 100080; China

Received:2001-12-03 Revised:2002-01-14 Published:2003-01-20 Online:2003-01-20

摘要/Abstract

摘要： 研究了保温时间对气压烧结(GPS)氮化硅陶瓷晶界相及力学性能的影响.研究发现,由于晶界相中的氧含量随保温时间的延长先增加然后明显降低,导致烧结体中晶界相的总量和致密化程度随保温时间的增加有一最大值.在本文所研究的保温时间范围内,烧结体的室温强度随保温时间的增加而升高.

关键词: 氮化硅陶瓷, 晶界相, 气压烧结, 保温时间

Abstract: The effect of holding time on intergranular phase and mechanical property of GPS silicon nitride ceramics was studied. Results show that the contents of intergranular oxygen and total grain boundary phase as well as the density of sintered samples have maximum values with increasing the holding time. Among the range of holding time in this research (0-90min), however, the room temperature strength of GPS silicon nitride ceramics increases with expanding the holding time.

Key words: silicon nitride, intergranular phase, GPS, holding time

中图分类号:

TQ174

代建清,黄勇,谢志鹏,马天,杨金龙,马景陶. 保温时间对GPS氮化硅陶瓷晶界相及力学性能的影响[J]. 无机材料学报.

DAI Jian-Qing,HUANG Yong,XIE Zhi-Peng,MA Tian,YANG Jin-Long,MA Jing-Tao. Effects of Holding Time on Intergranular Phase and Mechanical Property of GPS Silicon Nitride Ceramics[J]. Journal of Inorganic Materials.

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