Nanostructure influence on DLC-Ag tribological coatings☆
Nanostructure influence on DLC-Ag tribological coatings☆
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DOI：
10.1016/j.surfcoat.2005.02.103
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发表时间：
2005-10
影响因子：
5.4
通讯作者：
C. Lungu
中科院分区：
文献类型：
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作者：
C. Lungu
添加类金刚石碳（DLC）相的银基涂层制备的ECR-DC混合溅射被发现，降低其摩擦系数相比，在干滑动的基板材料。摩擦系数，在干燥条件下测试，Ag基体覆盖减少sp3-丰富的C形成。通过在低滑动速度（0.01 ms-1）下将石墨/Ag靶面积比从1/9增加到5/5，在干滑动中的5 N载荷下，它从0.72±0.05降低到0.25±0.05。透射电子显微镜（TEM）测量发现，当所制备的薄膜的晶粒尺寸小于10 nm时，其急剧下降。采用X射线光电子能谱（XPS）、X射线衍射（XRD）、拉曼光谱和原子力显微镜（AFM）对涂层进行了表征。
Addition of diamond like carbon (DLC) phase to Ag-base overlay prepared by ECR–DC hybrid sputtering was found to reduce its coefficient of friction compared to that of the substrate material in dry sliding. The coefficient of friction, tested in dry conditions, of the Ag matrix overlay decreased by sp3-rich C formation. It decreased from 0.72±0.05 to 0.25±0.05 by increasing the graphite/Ag target area ratio from 1/9 to 5/5 at low sliding speed (0.01 ms−1), 5 N load in dry sliding. Its drastic decrease was found when the grain size of the prepared films was lower than 10 nm as measured by transmission electron microscopy (TEM). The prepared coatings were characterized also by X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), Raman spectroscopy, and atomic force microscopy (AFM).