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Transient and Steady State Tribological Response of Diamond Films in Dry Sliding Contact

机译：干式滑动接触中金刚石膜的瞬态和稳态摩擦响应

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Polycrystalline diamond films (PDF) were deposited onto tungsten substrates using the microwave plasma-enhanced CVD method. Reciprocating dry sliding friction tests were performed using a right cylinder (PDF coated) on flat (PDF coated) geometry. The frictional behaviour of the PDF surfaces in dry sliding contact exhibit two distinct regimes; a high initial transitory response decaying to a steady state behaviour. This particular transitory behaviour, known as break-in, is an inherent characteristic of PDF surfaces and is nearly independent of the grain size of the film or the applied normal load. Raman spectroscopy indicates a higher graphitic content in the post-worn PDF as compared to the as-deposited film. This phase change is discussed in relationship to the "break-in" and steady state frictional behaviour for PDF dry sliding contact.
机译：使用微波等离子体增强的CVD方法将多晶金刚石薄膜（PDF）沉积在钨底物上。使用扁平缸（PDF涂层）几何形状进行往复干燥滑动摩擦试验。干滑动接触中PDF表面的摩擦行为表现出两个不同的制度;高初始暂时响应衰减到稳态行为。这种特殊的暂时性行为，称为断裂，是PDF表面的固有特性，并且几乎与膜的晶粒尺寸或所施加的正常负载无关。拉曼光谱表明与沉积的薄膜相比，磨损后PDF中的较高的石墨含量。在与PDF干滑动接触的“断裂”和稳态摩擦行为的关系中讨论这种相变。

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