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蛇纹石纳米粒子对ZL109铝合金活塞微弧氧化膜层摩擦性能的影响
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Effects of Serpentine Nanoparticles on the Friction Properties of Miro arc Oxidation Films Produced on ZL109 Aluminum Alloy Piston Surface
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    摘要:

    配制蛇纹石纳米粒子分散液,选定不同质量浓度分散液加入电解液中,分别对ZL109铝合金试件进行微弧氧化处理,制备蛇纹石纳米粒子复合微弧氧化陶瓷膜。通过测厚仪和显微硬度计对复合陶瓷膜进行检测得到表面性能最佳的试件,并在摩擦磨损试验机上考察该试件的摩擦学性能;通过分析其截面形貌和磨损前后表面形貌,探讨其摩擦机制。结果表明,蛇纹石纳米颗粒的加入使微弧氧化复合陶瓷层的膜厚增加、硬度升高,且蛇纹石纳米颗粒存在最佳添加量,使复合陶瓷膜试件具有较高的厚度和硬度;蛇纹石纳米颗粒的加入降低了复合陶瓷膜摩擦因数,改善其磨损性能。在摩擦过程中,蛇纹石对表面孔隙进行了填充,使表面的粗糙度减小;同时,蛇纹石在摩擦形成了类似薄膜的块状,起到了自修复的作用。

    Abstract:

    The serpentine nanoparticle dispersion was compounded,and serpentine nanoparticles composite microarc oxidation ceramic coatings were prepared by microarc oxidation treatment on ZL109 cast aluminum alloy with different concentrations of serpentine nanoparticles suspension.The composite ceramic coatings was tested by the thickness gauge and microhardness tester,the specimen with the best surface performance was obtained and its tribological behaviors were studied on the friction and wear tester.The friction and wear mechanism of the microarc oxidation ceramic coatings was discussed through analyzing the crosssectional morphology and surface morphology before and after wear.The results show that the film thickness and hardness of the composite ceramic coatings are increased when adding the serpentine nanoparticles,and there is an optimum addition of serpentine nanoparticles to make the composite ceramic coatings have higher thickness and hardness.The addition of serpentine nanoparticles reduces the friction coefficient and improves the wear resistance of the composite ceramic coatings.During the friction process,serpentine nanoparticles can fill the surface pores to reduce the surface roughness of the friction pairs,at the same time,the serpentine nanoparticles can form a bulk film to play the role of selfrepairing.

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胡海峰,刘新建,王连海,李晓,陈群生.蛇纹石纳米粒子对ZL109铝合金活塞微弧氧化膜层摩擦性能的影响[J].润滑与密封,2017,42(10):75-79.
. Effects of Serpentine Nanoparticles on the Friction Properties of Miro arc Oxidation Films Produced on ZL109 Aluminum Alloy Piston Surface[J]. Lubrication Engineering,2017,42(10):75-79.

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  • 在线发布日期: 2018-03-21
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