Microstructure and mechanical properties of C/C composite joint brazed with Ni-based filler

被引：1
|
作者：
PENG H.-L. [1 ,2 ]
ZHANG Y.-X. [3 ]
CHEN X. [1 ,2 ]
ZHANG H.-Q. [3 ]
XUE J.-L. [3 ]
GUO W. [3 ]
机构：
[1] Shanghai Spaceflight Precision Machinery Institute, Shanghai
[2] Shanghai Engineering Technology Research Center of Near-net Shape Forming for Metallic Materials, Shanghai
[3] School of Mechanical Engineering and Automation, Beihang University, Beijing
来源：
Transactions of Nonferrous Metals Society of China (English Edition) | 2022年 / 32卷 / 03期
基金：
中国国家自然科学基金;
关键词：
brazing; C/C composites; microstructure; shear strength;
D O I：
10.1016/S1003-6326(22)65843-6
中图分类号：
学科分类号：
摘要：
The novel Ni-based brazing filler was used to join C/C composites. When brazing temperature increased from 1080 to 1100 °C, the wetting angle decreased from 23° to 14°, and the brazing filler had good wettability on the surface of C/C composites. The brazing seam of the brazed joint consisted of Ni(s,s) and Cr3C2 phases. As brazing temperature increased, lots of Cr3C2 phases were generated at the bonding interface, and the thick reaction layer was formed. When brazing temperature was 1120 °C, the shear strength of C/C joint reached the maximum value of 31.5 MPa. The fracture path extended in the C/C matrix close to the bonding interface. © 2022 The Nonferrous Metals Society of China
引用
收藏
页码：927 / 934
页数：7
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