AIH-FPP形成的Cr扩散层对DLC薄膜粘附强度的影响

IF 0.5 4区材料科学 Q4 METALLURGY & METALLURGICAL ENGINEERING

Journal of The Japan Institute of Metals Pub Date : 2017-01-01 DOI:10.2320/JINSTMET.J2017006

Shogo Takesue, H. Akebono, Mizuki Furukawa, S. Kikuchi, J. Komotori, H. Nomura

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引用次数: 0

摘要

本研究为提高金刚石︲样碳(DLC)膜的附着强度，采用大气︲可控感应加热细颗粒喷丸(AIH︲FPP)处理中碳钢试样，并加入对DLC膜具有高亲和力的Cr颗粒。采用光学显微镜、扫描电镜和能量色散X︲射线能谱仪对AIH︲FPP处理后的样品进行表征。结果表明:AIH︲FPP处理后，在试样表面形成弥散Cr层。然后在改性后的涂层上涂覆DLC膜，进行往复磨损和压痕试验，研究DLC膜在改性基板表面的粘附强度。结果表明，AIH︲FPP处理形成的Cr扩散层提高了DLC膜对滑动载荷和大塑性变形的粘附强度。此外，通过增加Cr扩散层的厚度可以提高DLC膜的附着强度，并长期保持优越的摩擦特性。这些结果表明，AIH︲FPP处理诱导Cr扩散层是提高DLC膜附着强度的有效方法。

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Effect of Cr diffused layer formed by AIH-FPP on adhesion strength of DLC films

In this study, in order to improve the adhesion strength of diamond ︲ like carbon （ DLC ） ﬁlms, medium carbon steel specimens were treated by using an atmospheric ︲ controlled induction heating ﬁne particle peening （ AIH ︲ FPP ） with Cr particles that have high afﬁnity for DLC ﬁlms. The AIH ︲ FPP treated specimens were characterized using optical microscope, scanning electron microscope and energy dispersive X ︲ ray spectrometer. It was found that a diffused layer of Cr was formed on the specimen surface that was treated with AIH ︲ FPP. The modiﬁed layer was then coated with DLC ﬁlms, and in order to investigate the adhesion strength of DLC ﬁlms on the surface modiﬁed substrates, reciprocating wear and indentation tests were performed. It was revealed that a Cr diffused layer formed by AIH ︲ FPP treatment improved the adhesion strength of DLC ﬁlms against sliding loads and large plastic deforma - tions. In addition, the adhesion strength of DLC ﬁlms was improved by increasing the thickness of a Cr diffused layer and superior friction characteristics were maintained for a long time. These results suggest that a Cr diffused layer induced by AIH ︲ FPP treat - ment is an effective method for improving the adhesion strength of DLC ﬁlms.

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