排序方式: 共有1条查询结果,搜索用时 0 毫秒
1
1.
Yoon SW Seo JH Chae KH Park JK Song JH Jayaram V Lee KB Seong TY Hoon-Kwon Ahn JP 《Journal of nanoscience and nanotechnology》2012,12(2):1476-1479
AIN/CrN multilayer hard coatings with various bilayer thicknesses were fabricated by a reactive sputtering process. The microstructural and mechanical characterizations of multilayer coatings were investigated through transmission electron microscope (TEM) observations and the hardness measurements by nano indentation. In particular, the variation of chemical bonding states of the bilayer nitrides was elucidated by near edge X-ray absorption fine structure (NEXAFS) spectroscopy. Many broken nitrogen bonds were formed by decreasing the bilayer thickness of AIN/CrN multilayer coatings. Existence of optimum AIN/CrN multilayer coatings thickness for maximum hardness could be explained by the competition of softening by the formation of broken nitrogen bonds and strengthening induced by decreasing bilayer thickness. 相似文献
1