Diamond powders less than 100 nm in diameter as effective solid lubricants in vacuum
Diamond powders less than 100 nm in diameter as effective solid lubricants in vacuum
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DOI：
10.1143/jjap.43.l920
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发表时间：
2004-07-01
期刊：
影响因子：
--
通讯作者：
Odawara, O
中科院分区：
文献类型：
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作者：
Gubarevich, AV;Usuba, S;Odawara, O
研究了爆轰法制备的纳米金刚石和单晶金刚石微粉的摩擦磨损性能，探讨了金刚石微粉粒径对其润滑和磨损性能的影响。在真空中，平均聚集体尺寸为75 nm的纳米金刚石和平均直径为50 nm的机械粉碎的单晶金刚石粉末形成了均匀的润滑层，同时对SiC球滑动，并表现出非常低的摩擦系数为0.03和小于0.01，分别在0.5 N的施加载荷和3.5 mm/s的滑动速度的中等条件下。一个明确的趋势，观察到的摩擦系数和比磨损率，以减少颗粒/骨料尺寸。
The frictional behavior of detonation nanodiamond and single-crystal fine diamond powders were studied to determine the effect of particle diameter on their lubricative and abrasive characteristics. In vacuum, nanodiamond with an average aggregate size of 75 nm and mechanically crushed single-crystal diamond powders with an average diameter of 50 nm formed a uniform lubricating layer while sliding against a SiC ball and showed very low friction coefficients of 0.03 and less than 0.01, respectively, under moderate conditions of 0.5 N applied load and 3.5 mm/s sliding speed. A clear tendency was observed for both the friction coefficient and specific wear rates to decrease with decreasing particle/aggregate size.