Crack formation mechanisms in Al2O3/Kovar brazed joint

被引：6

作者：

Yu, Z. S. ^{[1
]}

Yang, P. ^{[1
]}

Li, R. F. ^{[1
]}

Qi, K. ^{[1
]}

机构：

[1] Shanghai Univ Engn Sci, Coll Mat Engn, Shanghai 200336, Peoples R China

来源：

MATERIALS SCIENCE AND TECHNOLOGY | 2006年 / 22卷 / 07期

关键词：

Al2O3; ceramic; brazing; crack; Ti-Cu-Ni filler metal; intermetallic compound;

D O I：

10.1179/174328406X102435

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Joining of metal to ceramic is difficult owing to the formation of cracks at the interface of brazed joint. In the present paper, the crack forming metallurgical mechanisms is studied primarily. The vacuum brazing experiments of ceramic Al2O3 and Kovar, Ni, Fe or Co metals are all conducted. It can be obtained that the cracks could be formed at the Al2O3-Kovar and Al2O3-Fe joint, but not at the Al2O3-Ni and Al2O3-Co joint. In addition, the interfacial morphology and compound composition near cracks are confirmed. It can be concluded that the formation of intermetallic compound FexTiy is the main reason why cracks formed.

引用

页码：864 / 866

页数：3

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