赵艺蔓,刘红妹,吉利,李红轩,权伟龙,周惠娣,陈建敏.转移膜的形成对含氢碳膜超低摩擦性能的影响[J].摩擦学学报,2018,(1):115~120
转移膜的形成对含氢碳膜超低摩擦性能的影响
Effect of Transfer Film Forming on Super-low Friction Properties of Hydrogenated Amorphous Carbon Films
投稿时间:2017-03-30  修订日期:2017-10-09
DOI:10.16078/j.tribology.2018.01.015
中文关键词:  含氢非晶碳薄膜  超低摩擦  转移膜  摩擦性能
英文关键词:a-C:H film  super-low friction  transfer film  tribological properties
基金项目:国家自然科学基金(51405474,51472250,51365027),中科院“西部之光”西部青年学者A类计划和“青年创新促进会”人才培养项目(2016368)资助.
作者单位E-mail
赵艺蔓 1. 兰州交通大学 化学与生物工程学院, 甘肃 兰州 730000
2. 中国科学院兰州化学物理研究所 固体润滑国家重点实验室, 甘肃 兰州730000 
 
刘红妹 兰州交通大学 化学与生物工程学院, 甘肃 兰州 730000 liuhongm@mail.lzjtu.cn 
吉利 中国科学院兰州化学物理研究所 固体润滑国家重点实验室, 甘肃 兰州730000  
李红轩 中国科学院兰州化学物理研究所 固体润滑国家重点实验室, 甘肃 兰州730000  
权伟龙 兰州交通大学 数理学院, 甘肃 兰州 730000  
周惠娣 中国科学院兰州化学物理研究所 固体润滑国家重点实验室, 甘肃 兰州730000  
陈建敏 中国科学院兰州化学物理研究所 固体润滑国家重点实验室, 甘肃 兰州730000  
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中文摘要:
      含氢非晶碳膜在惰性气氛下展现了超低摩擦性能,摩擦系数可达到10-3数量级. 本文中通过试验设计验证了转移膜的形成是碳膜超低摩擦性能获得的必要条件. 采用含氢非晶碳膜(a-C:H)与钢作为摩擦配副,球盘接触旋转运动,更换接触方式:一种是钢球与镀a-C:H薄膜的钢平板对摩,另一种是镀a-C:H薄膜钢球与钢平板对摩. 保持配副材料不变,利用接触方式的差异,来改变转移膜形成的难易程度. 第一种方式下,a-C:H可以转移到对偶形成均匀的转移膜,具有超低摩擦性能;在第二种方式下,a-C:H不能转移到对偶形成转移膜,摩擦系数高. 而该转移膜是一种含氢的,以sp2杂化为主的碳结构. 氢能够参与钝化碳悬键,从而保证低化学作用活性,sp2平面分子结构可以具有较低的剪切强度. 因此,转移膜的形成和氢的钝化作用对a-C:H薄膜超低摩擦机理均具有重要的贡献.
英文摘要:
      Hydrogenated amorphous carbon (a-C:H) films exhibit super-low friction properties in inert atmospheres with a friction coefficient of down to an order of 10-3. In this study, a experiment was designed to demonstrate that the formation of transfer film was a necessary condition for the super-low friction properties of a-C:H films, among which the tribological properties of a-C:H film sliding against steel in dry N2 were evaluated by a ball-on-disk rotation test in two contact modes. One was a steel ball sliding against a-C:H film coated steel disk, and the other is the same a-C:H film coated steel ball sliding against steel disk. For the first mode, the a-C:H film on steel disk was prone to transfer to the steel ball surface, exhibiting super low friction. For the second mode, the a-C:H film on steel ball was hard to transfer to the steel disk surface forming continuous transfer film, and showed high friction. While the transfer film was characterized containing high sp2 bonded carbon content and H, which was beneficial to obtain low friction because H passivated carbon dangling bonds to ensure the low chemical activity of contact surface, and sp2 planar molecular structure had low shear strength. Therefore, the formation of transfer film also was as important as H passivation being found in previous studies in contribution to the super-low friction properties of a-C:H films.
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