Mo<sub>2</sub>BC增强Al基复合材料摩擦学性能研究

doi:10.11896/cldb.24010247

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Abstract Aluminum matrix composites reinforced with different content of Mo₂BC ceramic were prepared using vacuum hot pressing sintering method, and analysis was conducted on the influence of Mo₂BC content on the tribological properties of aluminum matrix composites. It is confirmed that with the increment of the Mo₂BC content, the hardness of the composite is significantly improved. This can be ascribed to the significant pinning effect of Mo₂BC ceramic particles in the composite materials matrix, which can inhibit the plastic deformation of the matrix during the sliding process. When the mass fraction of Mo₂BC ceramic particles increases up to 30%, the hardness of the composite increases by 130% compared with plain Al, where the hardness is as high as 72.5HV_0.2. In addition, with the increasing content of Mo₂BC ceramic particles, the friction and wear properties of the composites have been significantly improved. For plain Al and Al matrix composites containing 10% Mo₂BC, when coupled with GCr15 bearing steel, the two materials exhibit high friction coefficient (0.84) and wear rate (14.3×10^-3 mm³·N^-1·m^-1). As the Mo₂BC ceramic particles gradually increase up to 30%, the material can exhibit lubrication effect, in which the wear rate and friction coefficient of the composite come down to 2.35×10^-3 mm³·N^-1·m^-1and 0.56, respectively. This is because the addition of Mo₂BC ceramic particles can generate lubricating tribo-oxides on the wear surface of the Al matrix composite due to the tribo-oxidation reaction, which can effectively inhibit the two body abrasive and adhesive wear, and it has a certain anti-wear and anti-friction effect.

Key words： Al matrix composites powder metallurgy tribological behavior wear mechanism

Published: 10 May 2025 Online: 2025-04-28

CLC number:

TH117.1

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	Articles by authors
	ZHU Lin
	WANG Shuai
	YOU Long
	LIU Juan
	PANG Xianjuan
	LU Huanhuan
	SONG Chenfei
	ZHANG Yongzhen

Cite this article:

ZHU Lin,WANG Shuai,YOU Long, et al. Study on the Tribological Properties of Mo₂BC Reinforced Al Matrix Composite Materials[J]. Materials Reports, 2025, 39(9): 24010247-6.

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https://www.mater-rep.com/EN/10.11896/cldb.24010247 OR https://www.mater-rep.com/EN/Y2025/V39/I9/24010247

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