硕士生导师
个人信息Personal Information
教师英文名称：Hongbo Wang
入职时间：2022-06-29
学历：博士研究生毕业
学位：工学博士学位
办公地点：西南交通大学犀浦校区3号教学楼31719房间
性别：男
在职信息：在岗
主要任职：智能制造与装备系主任助理
其他任职：智慧城市与交通学院本科教学秘书
毕业院校：西南交通大学
学科：机械制造及其自动化
所在单位：城市轨道交通学院（智慧城市与交通学院）
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Hydrogen content switching the temperature dependence of tribological performance of diamond-like carbon by shifting the dominant wear mechanism
影响因子：7.6
DOI码：10.1016/j.triboint.2026.112449
所属单位：西南交通大学
教研室：智能制造工程
发表刊物：Tribology International
摘要：Hydrogenated diamond-like carbon (H-DLC) films are promising solid lubricants, yet their tribological performance changes unpredictably with temperature, making optimal material selection challenging. Here, we perform high‑vacuum tribological experiments to reveal the synergistic effects of temperature and hydrogen concentration on the lubrication and wear performance of H‑DLC films. We demonstrate that increasing the hydrogen content can reverse the temperature dependence of the lubrication lifetime, because the increased hydrogen content is associated with a shift in the dominant wear mechanism from adhesive wear to chemical wear. Our combined simulations and experiments further elucidate the contrasting temperature responses of these two mechanisms. Elevated temperatures promote adhesive wear by enhancing the formation of interfacial bridge bonds that pull off surface atoms during sliding. Conversely, increased temperature within the tested range may suppress chemical wear by reducing Young’s modulus, which enlarges the real contact area and lowers local stress, thereby hindering hydrocarbon emission. Overall, these findings reveal how hydrogen content governs the temperature‑dependent tribological behavior of H‑DLC, providing a rational basis for designing robust solid lubricants with predictable performance within the tested temperature range.
合写作者：Zhihuang He,Peng Zhuo,Ruiqi Liu,Pengfei Shi
第一作者：Yexin Li
论文类型：SCI
通讯作者：Hongbo Wang,Yixin Su,Yang Wang
学科门类：工学
文献类型：J
卷号：225
页面范围：112449
是否译文：否
发表时间：2026-07-08
收录刊物：SCI
发布期刊链接：https://www.sciencedirect.com/science/article/abs/pii/S0301679X26007929