University of Oulu

Gang Wang, Yingjun Cai, Wei Wang, Xinjie Liu, Rujie He, Lu Zhang, Rongmei Liu, Caiwang Tan, Wei Cao, AgCuTi/graphene-reinforced Cu foam: A novel filler to braze ZrB2-SiC ceramic to Inconel 600 alloy, Ceramics International, Volume 46, Issue 1, 2020, Pages 531-537, ISSN 0272-8842,

AgCuTi/graphene-reinforced Cu foam : a novel filler to braze ZrB2-SiC ceramic to Inconel 600 alloy

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Author: Wang, Gang1; Cai, Yingjun1; Wang, Wei2;
Organizations: 1Anhui Key Laboratory of High-performance Non-ferrous Metal Materials, Anhui Polytechnic University, Wuhu, 241000, PR China
2School of Aviation and Materials, Anhui Machine and Electricity College, Wuhu, 241002, PR China
3Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, 100081, PR China
4Nano and Molecular Systems Research Unit, University of Oulu, P.O. Box 3000, FIN-90014, Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.7 MB)
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Language: English
Published: Elsevier, 2020
Publish Date: 2021-09-02


In order to relieve high residual stresses between ceramics and metals during brazing processes, an AgCuTi/graphene-reinforced Cu foam composite filler was developed and used to braze the ZrB₂-SiC ceramic and Inconel 600 alloy. Microstructures and shear strengths of the joints were systematically studied. The joints are composed of TiFe₂, TiCu, TiC, Cu(s, s), Ag(s, s), and Ti₅Si₃ phases. It is found the addition of graphene on the Cu foam surface can effectively retard diffusions of metal atoms and avoid the collapse of the foam matrix. After being brazed at 900 °C, the joint can get a maximum shear strength of 157 MPa, much higher than those brazed without graphene addition. The high shear strength was investigated in detail and attributed to the integrity of the Cu foam, formation of the TiC and thickness of the reaction layer at the ceramic side.

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Series: Ceramics international
ISSN: 0272-8842
ISSN-E: 1873-3956
ISSN-L: 0272-8842
Volume: 46
Issue: 1
Pages: 531 - 537
DOI: 10.1016/j.ceramint.2019.08.293
Type of Publication: A1 Journal article – refereed
Field of Science: 216 Materials engineering
Funding: This work was financially supported by the National Natural Science Foundation of China [51704001, 51772028]; Talent Project of Anhui Province [Z175050020001]; Natural Science Foundation of Anhui Province [KJ2018A0860], Talent Project of Anhui Polytechnic University, Anhui Provincial Grant for high-level platform construction, and the Academy of Finland [No. 311934].
Copyright information: © 2019 Elsevier Ltd and Techna Group S.r.l. This manuscript version is made available under the CC-BY-NC-ND 4.0 license