Exploring the beneficial role of tribofilms formed from an epoxy-based hybrid nanocomposite
Exploring the beneficial role of tribofilms formed from an epoxy-based hybrid nanocomposite
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DOI：
10.1016/j.triboint.2015.03.006
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发表时间：
2015-08
影响因子：
6.2
通讯作者：
W. Österle;A. Dmitriev;T. Gradt;I. Häusler;B. Hammouri;P. I. M. Guzmán;B. Wetzel;D. Yigit;Ga Zhang
中科院分区：
文献类型：
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作者：
W. Österle;A. Dmitriev;T. Gradt;I. Häusler;B. Hammouri;P. I. M. Guzmán;B. Wetzel;D. Yigit;Ga Zhang
对混杂纳米复合材料与钢摩擦时形成的有益摩擦膜的组成和纳米结构进行了全面表征。用高能球磨法制备了三种摩擦膜成分：二氧化硅、赤铁矿和石墨，得到了相似的纳米结构。通过提供粉末进行针盘式测试，表明无论是二氧化硅，赤铁矿还是两者的混合物都不能提供混合复合材料所观察到的低摩擦系数（COF）。只有当石墨与氧化物混合时，才能获得较低的COF。因此，在考虑的情况下，含有15 vol%石墨的精细分散的稳定无机耐磨产品薄膜提供了低摩擦和磨损。
The composition and nanostructure of a beneficial tribofilm formed during sliding of a hybrid nanocomposite against steel were characterized comprehensively. A similar nanostructure was produced by high energy ball milling of the three identified tribofilm constituents: silica, hematite and graphite. By supplying powders to a pin-on-disc test it has been shown that neither silica, nor hematite, nor a mixture of both provide the low coefficient of friction (COF) observed for the hybrid composite. Only if graphite was blended with the oxides, the low COF was obtained. Thus, a film of finely dispersed stable inorganic wear products containing 15 vol% graphite provides low friction and wear in the considered case.