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Understanding the wear behaviour of non-doped and Si,O-doped diamond-like carbon films

机译：了解非掺杂和Si，O掺杂类金刚石碳膜的磨损行为

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Two diamond-like carbon coatings have been examined, both prior to, and post tribotesting. Physical–chemical characterisation allows the elucidation of both the physical and tribochemical mechanisms underpinning the respective wear behaviours. The wear of the undoped a-C:H DLC coating is far lower than that of the Si,O-doped DLC. Both coatings show formation of protective tribofilms with tribochemically-relevant elements derived from the lubricant additives; however the tribofilms on the two coatings exhibit key differences, with one containing pyrophosphate. The undoped a-C:H DLC coating shows an increase in non-planar sp2 carbon content during wear testing which appears to be at the expense of sp3-hybridised carbon. In comparison, the Si,O-doped DLC undergoes comparatively little change in carbon hybridisation state.
机译：在摩擦测试之前和之后，已经检查了两种类金刚石碳涂层。物理化学特征可以阐明构成相应磨损行为的物理和摩擦化学机理。未掺杂的a-C：H DLC涂层的磨损远低于掺Si，O的DLC的磨损。两种涂层均显示形成了具有摩擦化学相关元素的保护性摩擦膜，这些元素均来自润滑剂添加剂。然而，两种涂层上的摩擦膜表现出关键的区别，其中一种包含焦磷酸盐。未掺杂的aC：H DLC涂层在磨损测试期间显示出非平面sp 2 碳含量的增加，这似乎是以sp 为代价的3 -杂化碳。相比之下，Si，O掺杂DLC的碳杂化状态变化相对较小。

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