Effect of V2AlC on the microstructure of copper/graphite composite materials

IF 3.8 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Vacuum Pub Date : 2025-02-06 DOI:10.1016/j.vacuum.2025.114113

Y. Gong , S. Wang

引用次数: 0

Abstract

Copper/graphite composite materials (CGCM) are widely employed as electric contact material in many fields. However, challenges persist due to weak interface bonding. This study investigates the incorporation of V₂AlC into CGCM to enhance the bonding at the copper-graphite interface. The results show that at high temperatures, V₂AlC decomposes in situ into VC, releasing V atoms that promote the synthesis of a VC layer at the copper-graphite interface. This contributes to a higher nano-indentation hardness at the copper-graphite interface, from 1.46 ± 0.16 GPa to 6.12 ± 0.48 GPa. Additionally, there is a significant improvement in the hardness and compressive strength of CGCM, with hardness increasing from 19.6 ± 1.2 HV_0.2 to 76.3 ± 1.6 HV_0.2 and compressive strength rising from 132 ± 5 MPa to 218 ± 6 MPa, respectively.

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来源期刊

Vacuum 工程技术-材料科学：综合

CiteScore

6.80

自引率

17.50%

发文量

审稿时长

34 days

期刊介绍： Vacuum is an international rapid publications journal with a focus on short communication. All papers are peer-reviewed, with the review process for short communication geared towards very fast turnaround times. The journal also published full research papers, thematic issues and selected papers from leading conferences. A report in Vacuum should represent a major advance in an area that involves a controlled environment at pressures of one atmosphere or below. The scope of the journal includes: 1. Vacuum; original developments in vacuum pumping and instrumentation, vacuum measurement, vacuum gas dynamics, gas-surface interactions, surface treatment for UHV applications and low outgassing, vacuum melting, sintering, and vacuum metrology. Technology and solutions for large-scale facilities (e.g., particle accelerators and fusion devices). New instrumentation ( e.g., detectors and electron microscopes). 2. Plasma science; advances in PVD, CVD, plasma-assisted CVD, ion sources, deposition processes and analysis. 3. Surface science; surface engineering, surface chemistry, surface analysis, crystal growth, ion-surface interactions and etching, nanometer-scale processing, surface modification. 4. Materials science; novel functional or structural materials. Metals, ceramics, and polymers. Experiments, simulations, and modelling for understanding structure-property relationships. Thin films and coatings. Nanostructures and ion implantation.