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石墨增強體對SiC/Gr/Al復(fù)合材料干摩擦磨損性能的影響
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Effect of Graphite Particle Reinforcement on Dry Sliding Wear of SiC/Gr/Al Composites
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    摘要:

    采用擠壓鑄造技術(shù)制備不同粒徑石墨顆粒增強的40%SiC/5%Gr/Al復(fù)合材料，研究了石墨顆粒對摩擦系數(shù)和磨損率的影響。結(jié)果表明，隨著石墨的加入，復(fù)合材料的摩擦系數(shù)降低，磨損抗力提高170~340倍。另外，石墨顆粒粒徑的增加也導(dǎo)致磨損抗力的提高，這是由于在干摩擦的過程中形成由鐵的氧化物、石墨及SiC 等組成的具有潤滑性質(zhì)的薄膜

    Abstract:

    The 40%SiC/5%Gr/Al composites with various-sizes graphite addition were fabricated by squeeze casting technology, and their friction and wear properties were investigated. Results showed that after the addition of graphite the friction coefficient of composites decreased and the wear resistance increased by 170 to 340 times. In addition, wear resistance was improved with increasing of graphite particle size, which is attributed to the enhancement of integrity of lubrication tribo-layer composed of a complex mixture of iron oxides, graphite as well as fractured SiC particles and some fine particles containing aluminum.

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冷金鳳,姜龍濤,武高輝,田首夫,陳國欽.石墨增強體對SiC/Gr/Al復(fù)合材料干摩擦磨損性能的影響[J].稀有金屬材料與工程,2009,38(11):1894~1898.[Leng Jinfeng, Jiang Longtao, Wu Gaohui, Tian Shoufu, Chen Guoqin. Effect of Graphite Particle Reinforcement on Dry Sliding Wear of SiC/Gr/Al Composites[J]. Rare Metal Materials and Engineering,2009,38(11):1894~1898.]
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  • 收稿日期:2008-11-30
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