淡江大學機構典藏:Item 987654321/97194
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    题名: Humidity-dependent friction mechanism in an ultrananocrystalline diamond film
    作者: N Kumar;Radhika Ramadoss;A T Kozakov;K J Sankaran;S Dash;A K Tyagi;Tai, N H;Lin, I-Nan
    贡献者: 淡江大學物理學系
    日期: 2013-06
    上传时间: 2014-03-18 09:53:56 (UTC+8)
    出版者: Bristol: Institute of Physics Publishing Ltd.
    摘要: Friction behaviour of an ultrananocrystalline diamond film deposited by the microwave plasma-enhanced chemical vapour deposition technique is studied in a controlled humid atmosphere. The value of friction coefficient consistently decreases while increasing the humidity level during the tribology test. This value is 0.13 under 10% relative humidity conditions, which is significantly decreased to 0.004 under 80% relative humidity conditions. Such a reduction in friction coefficient is ascribed to passivation of dangling covalent bonds of carbon atoms, which occurs due to the formation of chemical species of hydroxyl and carboxylic groups such as C–COO, CH3COH and CH2–O bonding states.
    關聯: Journal of Physics D: Applied Physics 46(27), 275501(8pages)
    DOI: 10.1088/0022-3727/46/27/275501
    显示于类别:[物理學系暨研究所] 期刊論文

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