Brazing of Ti-coated SiC using a CoFeCrNiCu high entropy alloy filler via electric field-assisted sintering

Gang Wang; Yihe Liu; Miao Wang; Yunlong Yang; Yu Zhao; Rujie He; Caiwang Tan; Wei Wang; Xiaobing Zhou

Journal of Materials Research and Technology (Mar 2023)

Brazing of Ti-coated SiC using a CoFeCrNiCu high entropy alloy filler via electric field-assisted sintering

Gang Wang,
Yihe Liu,
Miao Wang,
Yunlong Yang,
Yu Zhao,
Rujie He,
Caiwang Tan,
Wei Wang,
Xiaobing Zhou

Affiliations

Gang Wang: Anhui Key Laboratory of High-performance Non-ferrous Metal Materials, Anhui Polytechnic University, Wuhu 241000, China
Yihe Liu: Anhui Key Laboratory of High-performance Non-ferrous Metal Materials, Anhui Polytechnic University, Wuhu 241000, China; Engineering Laboratory of Advanced Energy Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
Miao Wang: Anhui Key Laboratory of High-performance Non-ferrous Metal Materials, Anhui Polytechnic University, Wuhu 241000, China; Corresponding author.
Yunlong Yang: School of Architecture and Environmental Engineering, Nanchang Institute of Science and Technology, Nanchang, 330000, China
Yu Zhao: Anhui Key Laboratory of High-performance Non-ferrous Metal Materials, Anhui Polytechnic University, Wuhu 241000, China
Rujie He: Anhui Key Laboratory of High-performance Non-ferrous Metal Materials, Anhui Polytechnic University, Wuhu 241000, China; Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing, 100081, China; Corresponding author.
Caiwang Tan: State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin, 150001, China
Wei Wang: School of Aviation and Materials, Anhui Machine and Electricity College, Wuhu, 241002, China
Xiaobing Zhou: Engineering Laboratory of Advanced Energy Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China; Corresponding author.

Journal volume & issue: Vol. 23
pp. 5142 – 5151

Abstract

Read online

Electric field-assisted sintering technology (FAST) was used to join SiC ceramic by using a CoFeCrNiCu high-entropy alloy filler. A thin Ti film was deposited on SiC surface by physical vapor deposition to reduce the residual thermal stress in the joint. The microstructure, bending strength, and bonding mechanism were systematically investigated. It was found that a discontinuous TiC layer could be formed at the interface and the interfacial reaction products changed with different brazing temperatures. A joint with a bending strength of 72 MPa was achieved at 1200 °C, which is 73% higher than that of the SiC brazed without Ti coating. This work provides a new insight in the interfacial design of ceramic brazing with high mechanical properties.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

About the journal

Abstract

Keywords