Spreading of PFPE lubricants on carbon surfaces: effect of hydrogen and nitrogen content
Spreading of PFPE lubricants on carbon surfaces: effect of hydrogen and nitrogen content
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PFPE 润滑剂在碳表面上的铺展：氢和氮含量的影响
DOI：
10.1023/a:1019143103204
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发表时间：
1999
影响因子：
3.2
通讯作者：
C. Bauer
中科院分区：
文献类型：
--
作者：
X. Ma;J. Gui;K. Grannen;L. Smoliar;Bruno Marchon;M. Jhon;C. Bauer
采用扫描微椭偏仪研究了端羟基全氟聚烷基醚（PFPE, Zdol）在非晶碳表面上的扩散与碳膜中氢、氮含量的关系。观察到厚度分布的层状结构，所有碳类型的厚度分布在质量上保持相同。随着膜中氢或氮含量的增加，第二层的锐度逐渐被侵蚀。采用Matano界面法计算厚度相关扩散系数。Zdol的表面迁移率随氢含量的增加而增加，随氮含量的增加而降低。讨论了这些结果对Zdol在碳膜上的边界润滑性能的影响。
The spreading of OH-terminated perfluoropolyalkylether (PFPE), Zdol, on amorphous carbon surfaces was studied as a function of hydrogen or nitrogen content in the carbon film, using scanning micro-ellipsometry. A layered structure of the thickness profiles was observed, which remained qualitatively the same for all carbon types. The sharpness of the second layer was gradually eroded as either hydrogen or nitrogen content in the films was increased. The thickness-dependent diffusion coefficient was calculated using the Matano interface method. It was observed that the surface mobility of Zdol increased as hydrogen content increased, but decreased as nitrogen content increased. Implications of these results on the boundary lubrication properties of Zdol on carbon films are discussed.