Study on the Tribological Properties of Mo2BC Reinforced Al Matrix Composite Materials
ZHU Lin1,2, WANG Shuai1,*, YOU Long2, LIU Juan1,2, PANG Xianjuan1, LU Huanhuan1, SONG Chenfei1, ZHANG Yongzhen1
1 National United Engineering Laboratory for Bearing Tribology, Henan University of Science and Technology, Luoyang 471023, Henan, China 2 School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, Henan, China
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 72.5HV0.2. 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.
祝林, 王帅, 游龙, 刘娟, 逄显娟, 陆焕焕, 宋晨飞, 张永振. Mo2BC增强Al基复合材料摩擦学性能研究[J]. 材料导报, 2025, 39(9): 24010247-6.
ZHU Lin, WANG Shuai, YOU Long, LIU Juan, PANG Xianjuan, LU Huanhuan, SONG Chenfei, ZHANG Yongzhen. Study on the Tribological Properties of Mo2BC Reinforced Al Matrix Composite Materials. Materials Reports, 2025, 39(9): 24010247-6.
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2025, Vol. 39 
