Graphene-coated Cu foam interlayer for brazing C/C composite and Nb

被引：0

作者：

Wang Z. ^{[1
]}

Ba J. ^{[1
]}

Qi J. ^{[1
]}

Feng J. ^{[1
]}

机构：

[1] State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin

来源：

Hanjie Xuebao/Transactions of the China Welding Institution | 2018年 / 39卷 / 10期

关键词：

Braze; C/C composite; Composite interlayer; Graphene; Residual stress;

D O I：

10.12073/j.hjxb.2018390251

中图分类号：

学科分类号：

摘要：

In order to solve the problems such as poor structural integrity, inhomogeneous dispersion and agglomeration of graphene in the brazing seam, PECVD process was utilized for in-situ preparation of high-quality graphene-coated Cu foam composite interlayer prior to being applied to braze C/C composite and Nb. Raman, SEM, HRTEM tests were carried out to characterize the prepared graphene and the brazed joints. The results show that graphene acquired even distribution in the brazing seam with the help of Cu foam, which owned interconnected porosity. Simultaneously, the excellent chemical inertia of graphene inhibited the collapse of Cu foam. Furthermore, based on the synergistic reinforcement effect of Cu foam, with good plastic deformation capacity, and graphene, with extremely low coefficient of linear expansion, the thermal residual stress in the joint has been effectively mitigated. The average shear strength of the joint was evidently improved. © 2018, Editorial Board of Transactions of the China Welding Institution, Magazine Agency Welding. All right reserved.

引用

页码：71 / 74

页数：3

共 13 条

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