金属热处理 ›› 2020, Vol. 45 ›› Issue (11): 226-231.DOI: 10.13251/j.issn.0254-6051.2020.11.044

• 表面工程 • 上一篇    下一篇

含氢类金刚石涂层在船用柴油机柱塞上的应用

王永坤1,2, 秦洪1,2, 杨静1,2, 缪学强1,2, 刘惠娥1,2, 陈超1,2   

  1. 1.重庆红江机械有限责任公司, 重庆 402160;
    2.船舶与海洋工程动力系统国家工程实验室, 重庆 402160
  • 收稿日期:2020-04-23 出版日期:2020-11-25 发布日期:2020-12-29
  • 作者简介:王永坤(1987—),男,工程师,硕士,主要研究方向为金属材料表面改性与强化、金属热处理及新型超硬材料设计、合成与检测,E-mail: wyk2008xynu@163.com
  • 基金资助:
    工信部“高技术船舶科研计划—船用低速机工程(一期)”(船工科[2017]21号)

Applicant of hydrogenated diamond like coating on plunger for marine diesel engine

Wang Yongkun1,2, Qin Hong1,2, Yang Jing1,2, Miao Xueqiang1,2, Liu Hui'e1,2, Chen Chao1,2   

  1. 1. Chongqing Hongjiang Machinery Co., Ltd., Chongqing 402160, China;
    2. National Engineering Laboratory for Marine Power System, Chongqing 402160, China
  • Received:2020-04-23 Online:2020-11-25 Published:2020-12-29

摘要: 利用磁控溅射和等离子增强化学气相沉积复合技术,以 Cr、WC、石墨为靶材,Ar和C2H2为工作气体,在船用低速柴油机柱塞上涂覆了过渡层依次为Cr、WC的含氢类金刚石涂层。结果表明:涂层晶体生长良好,结构连续致密,均未出现分层、开裂及剥离的现象;涂层相对光滑,大幅度提高了柱塞表面的纳米硬度与弹性模量,同时降低了在重柴油环境下的摩擦因数,长时间的台架试验后未涂覆涂层的柱塞表面出现非常明显的平行状沟槽磨痕,而且整体磨损比较严重,而涂覆涂层的柱塞表面磨痕非常窄且浅,数量较少,类金刚石涂层可以明显提高柱塞表面的耐磨损性能。

关键词: 柱塞, 磁控溅射, 等离子增强化学气相沉积, 含氢类金刚石涂层, 摩擦磨损

Abstract: With Cr, WC and graphite as targets and Ar and C2H2 as working gases, hydrogenated diamond like coating with Cr and WC as transition layers was prepared on the plunger of marine diesel engine by composite technology of magnetron sputtering and plasma enhanced chemical vapor deposition. The results show that the crystal of the coating grows well, and continuous with high density, no stratification, cracking or peeling phenomenon can be observed. The coating is relatively smooth, which improves sharply the hardness, elastic modulus and decreases the friction coefficient under heavy diesel oil environment. After the bench test, relatively obvious parallel grooving wear marks appear on the surface of the plunger without coating, and the overall wear is more serious, while the wear marks on the surface of the plunger with coating are very narrow and shallow, which is less in quantity. It is proved that the wear resistance of the plunger surface after preparing diamond like coating is significantly improved.

Key words: plunger, magnetron sputtering, plasma enhanced chemical vapor deposition, hydrogenated diamond like coating, friction and wear

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