Interfacial Microstructure and Strength of Vacuum Brazed Joints of Ternary Ceramics Ti3SiC2

被引：1
|
作者：
Shi, Liping [1 ]
Zhong, Yesheng [1 ]
Yu, Jia [2 ]
He, Xiaodong [1 ]
机构：
[1] Harbin Inst Technol, Ctr Composite Mat, Harbin 150001, Peoples R China
[2] Harbin Engn Univ, Harbin 150001, Peoples R China
来源：
CHINESE CERAMICS COMMUNICATIONS | 2010年 / 105-106卷
关键词：
Ti3SiC2; vacuum brazing; flexural strength;
D O I：
10.4028/www.scientific.net/AMR.105-106.226
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：
Ti3SiC2 is one of the nano-layered ternary ceramics M(n+1)AX(n), where M is a transition metal, A is an A-group (mostly IIIA or IVA) element, and X is C or N. With the filler of Ag-Cu-Ti, the brazing of Ti3SiC2 has been conducted at 800 degrees C-950 degrees C for 5-10min under 3.5 x 10(3)Pa in a vacuum. The phase composition and microstructure of the joints were investigated by XRD, SEM AND EPMA. The diffusion of Cu element in fillers through the reaction zone toward Ti3SiC2 is the main controlling step in the bonding process. Joint strengths were evaluated by three point bending test. The maximum flexural strength of joints reaches is 306 +/- 11MPa, which is lower than the bending strength of Ti3SiC2, obtained under the same condition.
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页码：226 / +
页数：2
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