Influence of Modulation Periodicity on Tribo-corrosion Properties of Magnetron-sputtered Film Consisting of Multiple Alternating Layers of Cr and Graphite-like Carbon
LI Yingchun1,2,*, YANG Gengsheng1, YANG Mingxuan1, QIU Ming1,2, FAN Henghua1
1 School of Mechatronics Engineering, Henan University of Science and Technology, Luoyang 471000, Henan, China 2 Collaborative Innovation Center of Machinery Equipment Advanced Manufacturing of Henan Province, Henan University of Science and Technology, Luoyang 471000, Henan, China
Abstract: Critical moving parts used in marine environment suffer the interactive impact by corrosion and wear, and depositing tribo-corrosion-resistant coatings on these metal components is one of the effective means to improve their service life. This work, using DC magnetron sputtering technique, prepared on surfaces of 15-5PH stainless steel substrates three samples of films, which were consisted of multiple alternating layers of Cr and graphite-like carbon (GLC), and differed in modulation periodicities (940 nm, 375 nm and 234 nm, marked as S1, S2 and S3, respectively). Further, it carried out morphological observation, electrochemical test, and tribo-corrosion test to clarify the effects of modulation periodicity on the films' structures, electrochemical properties, and tribo-corrosion resistances. The experiments found, with the decrease of modulation periodicity, a gradually decreasing tendency of columnar crystal growth, and consequently, gradual increases in film density and sp2 bond content, resulting in intensified graphitization and higher mechanical strength. In artificial seawater, multi-layer films with smaller modulation periodicities had more interlayer interfaces, which facilitated inhibition of crack expansion and corrosion channels formation and hindered the penetration of corrosive medium. And the test indicated the best corrosion resistance acquired by S3 film. In the tribo-corrosion test, due to the interaction of load and corrosive medium, the S2 film with denser structure and suitable modulation periodicity achieved a wear rate of only 2.50×10-16 m3/(N·m), exhibiting optimal tribo-corrosion resistance. It could be concluded that the adjustment of modulation periodicity is of key importance to improving the tribo-corrosion resistance of Cr/GLC multi-layer films.
通讯作者:
*李迎春,河南科技大学机电工程学院副教授,硕士研究生导师。1993年自原洛阳工学院(现河南科技大学)材料工程学院金属材料及热处理专业硕士毕业后到原机械工业部第十设计研究院工作,2001年调入河南科技大学工作至今,主要研究方向为摩擦学及表面工程。参加国家自然科学基金面上项目2项、国家科技部专项2项、河南省杰出人才创新基金项目1项、河南省重点攻关项目1项。以第一作者/参与作者发表论文50余篇,包括Industrial Lubrication and Tribology、Tribology International、Wear、《中国机械工程》《中国表面工程》等,参编专著2部。lyc2004henan.china@126.com
引用本文:
李迎春, 杨更生, 杨明宣, 邱明, 范恒华. 调制周期对磁控溅射Cr/类石墨碳多层膜腐蚀-磨损性能的影响[J]. 材料导报, 2024, 38(21): 23070129-7.
LI Yingchun, YANG Gengsheng, YANG Mingxuan, QIU Ming, FAN Henghua. Influence of Modulation Periodicity on Tribo-corrosion Properties of Magnetron-sputtered Film Consisting of Multiple Alternating Layers of Cr and Graphite-like Carbon. Materials Reports, 2024, 38(21): 23070129-7.
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2024, Vol. 38 
