用有机硅树脂YR3370连接RBSiC陶瓷

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用有机硅树脂YR3370连接RBSiC陶瓷

原效坤，李树杰，张听

北京航空航天大学材料科学与工程学院

收稿日期:2005-11-03 修回日期:2006-03-31 出版日期:2007-03-10 发布日期:2007-03-10
通讯作者: 原效坤

Joining RBSiC Ceramic with Silicon Resin YR3370

YUAN;Xiaokun,;LI;Shujie,;ZHANG;Ting

School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics

Received:2005-11-03 Revised:2006-03-31 Online:2007-03-10 Published:2007-03-10
Contact: YUAN Xiaokun

摘要/Abstract

摘要：

以一种聚硅氧烷类有机硅树脂YR3370(GE Toshiba Silicones)为连接剂，连接了反应烧结SiC(RBSiC)陶瓷。连接件在1 100~1 300℃的99.99%N₂气流中进行热处理。用三点弯曲强度实验测定连接件的强度，用场发射扫描电镜、X射线衍射和热重测试分析显微结构和化学反应。在连接温度为1 200 ℃时，连接件的三点弯曲强度达到最大值197 MPa。连接层是由有机硅树脂YR3370裂解生成的无定形Si_xO_yC_z陶瓷，其结构连续均匀致密，厚度在2~5 μm之间。连接机理是通过无定形Si_xO_yC_z陶瓷的无机粘接作用在RBSiC陶瓷基体和连接层之间形成连续的化学键。

关键词: 有机硅树脂, YR3370, SiC陶瓷, 陶瓷连接

Abstract:

Ceramic joints between reactionbonded silicon carbide (RBSiC) were produced using a polysioxane silicon resin YR3370(GE Toshiba Silicones) as joining material.Samples were heat treated in a 99.99% nitrogen flux at temperatures ranging from 1 100 to 1 300 ℃.The strength of the joints was determined by three point bending test.Microstructural and microchemical analyses were performed by FESEM,XRD and TG analysis.The three point bending strength of the joint at 1 200 ℃ reached the maximum of 197 MPa.

Key words: silicon , resin, , YR3370, , SiC , ceramic, , ceramic , joining

中图分类号:

V254.2
TB332

原效坤;李树杰;张听. 用有机硅树脂YR3370连接RBSiC陶瓷[J]. 航空学报, 2007, 28(2): 451-455.

YUAN Xiao-kun;LI Shu-jie;ZHANG Ting. Joining RBSiC Ceramic with Silicon Resin YR3370[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2007, 28(2): 451-455.

E-mail：hkxb@buaa.edu.cn

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主管单位：中国科学技术协会主办单位：中国航空学会北京航空航天大学

用有机硅树脂YR3370连接RBSiC陶瓷

Joining RBSiC Ceramic with Silicon Resin YR3370

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