New in situ superlow-friction method for nitrogen-containing diamond-like carbon coatings using dielectric barrier discharge treatment in ambient air
New in situ superlow-friction method for nitrogen-containing diamond-like carbon coatings using dielectric barrier discharge treatment in ambient air
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DOI：
10.1016/j.triboint.2022.107749
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发表时间：
2022-06
影响因子：
6.2
通讯作者：
Wenjun Wu;M. Murashima;Tomohiro Saso;T. Tokoroyama;Woo-Young Lee;H. Kousaka;N. Umehara
中科院分区：
文献类型：
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作者：
Wenjun Wu;M. Murashima;Tomohiro Saso;T. Tokoroyama;Woo-Young Lee;H. Kousaka;N. Umehara
本文研究了一种在环境空气中利用介质阻挡放电（DBD）对类金刚石（DLC）涂层进行原位表面处理的新技术。DBD辐照后，摩擦系数从0.33下降到0.02 ~ 0.008（低摩擦到超低摩擦）。尤其当含湿含氧气体吹至DBD放电位置时，观察到0.008的超低摩擦。只有含氮DLC涂层在DBD辐照下形成液体膜，该膜具有超低摩擦。表面分析表明，低摩擦是由于发育的软质有机物质和高酸性液体的相互作用。
In the present paper, we develop a new in situ surface treatment technology for diamond-like carbon (DLC) coatings using dielectric barrier discharge (DBD) in ambient air. The friction coefficient dropped from 0.33 to 0.02–0.008 (low to superlow friction) shortly after DBD irradiation. Especially, when the gas containing humidity and oxygen was blew to DBD discharge position, a superlow friction of 0.008 was observed. Only nitrogen-containing DLC coatings developed a liquid film with DBD irradiation, and this film exhibited superlow friction. Surface analysis revealed that the low friction was due to the interaction of developed soft organic material and highly acidic liquid.