Impact of counterface topography on the formation mechanisms of nanostructured tribofilm of PEEK hybrid nanocomposites
Impact of counterface topography on the formation mechanisms of nanostructured tribofilm of PEEK hybrid nanocomposites
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DOI：
10.1016/j.triboint.2014.11.015
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发表时间：
2015-03
影响因子：
6.2
通讯作者：
Ga Zhang;B. Wetzel;B. Jim;W. Oesterle
中科院分区：
文献类型：
--
作者：
Ga Zhang;B. Wetzel;B. Jim;W. Oesterle
研究了钢摩擦副表面形貌对聚醚醚酮（PEEK）混杂纳米复合材料纳米结构摩擦膜形成机理的影响。研究了三种平均粗糙度从纳米级到微米级的表面光洁度。纳米颗粒的摩擦烧结、摩擦副表面钢的氧化和磨屑的压实被认为是控制摩擦膜形成和功能的竞争因素。摩擦副表面形貌对摩擦膜的最终结构、承载能力和润滑性能具有重要影响。结果表明，在复合材料的摩擦学性能方面，主要由纳米二氧化硅颗粒组成的摩擦膜最好，其粗糙度为亚微米级。
The effect of steel counterface topography on the formation mechanisms of nanostructured tribofilms of polyetheretherketone (PEEK) hybrid nanocomposites was studied. Three types of surface finishes with mean roughnessRaranging from nano- to micro-scale were investigated. Tribo-sintering of nanoparticles, oxidation of counterface steel and compaction of wear debris are identified to be competing factors dominating the formation and function of the tribofilms. Counterface topography played an important role on the competing factors, and thereby influenced significantly the final structure, the load-carrying capability and the lubrication performance of the tribofilms. It was disclosed that a thin tribofilm, which mainly consists of silica nanoparticles and which forms on the counterface with a sub-micron roughness, benefits best the tribological performance of the composites.