Microstructure and mechanical properties of the Si3N4/42CrMo steel joints brazed with Ag-Cu-Ti plus Mo composite filler

被引：76

作者：

He, Y. M. ^{[1
]}

Zhang, J. ^{[1
]}

Sun, Y. ^{[1
]}

Liu, C. F. ^{[1
]}

机构：

[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2010年 / 30卷 / 15期

关键词：

Si3N4; Joining; Ag-Cu-Ti plus Mo composite filler; Microstructure; Mechanical properties; SILICON-NITRIDE; STRENGTH; CERAMICS;

D O I：

10.1016/j.jeurceramsoc.2010.07.005

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The Si3N4 ceramic was joined to 42CrMo steel using Ag-Cu-Ti + Mo composite filler. Effect of Mo particles content on the microstructure and mechanical properties of the joints were investigated. Defect-free joints were received when the Si3N4/42CrMo steel joints were brazed with Ag-Cu-Ti + Mo composite filler. The results show that a continuous reaction layer which is composed of TiN and Ti5Si3 was formed near the Si3N4 ceramic. A double reaction layer which consists of Fe2Ti and FeTi was also formed adjacent to 42CrMo steel, with Fe2Ti being located near the steel. The central part of the joint is composed of Ag based solid solution, Cu based solid solution, Mo particles and some Cu-Ti intermetallic compounds. The maximal bending strength reached 587.3 MPa with 10 vol.% Mo particles in the joint, at which the joint strength was 414.3% higher than the average strength for the case without Mo particles addition. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：3245 / 3251

页数：7

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