Contact damage evolution in a diamond-like carbon (DLC) coating on a stainless steel substrate

被引：79

作者：

Xie, Z. -H. ^{[1
]}

Singh, R.

Bendavid, A.

Martin, P. J.

Munroe, P. R.

Hoffman, M.

机构：

[1] Univ New S Wales, Sch Mat Sci & Engn, Sydney, NSW, Australia

[2] CSIRO, Div Ind Phys, Sydney, NSW, Australia

来源：

THIN SOLID FILMS | 2007年 / 515卷 / 06期

基金：

澳大利亚研究理事会;

关键词：

diamond-like carbon; indentation; scratching; focused ion beam microscopy; fracture toughness;

D O I：

10.1016/j.tsf.2006.01.035

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A diamond-like carbon thin film was coated onto a stainless steel substrate using plasma assisted chemical vapour deposition (PACVD). Instrumented indentation and scratching were used, supported by focused ion beam (FIB) microscopy, to explore deformation and fracture behaviours of this coating system. The formation and growth of ring and radial cracks in the coating, as well as plastic flow in the ductile substrate, were observed to be the predominant deformation processes for this coating system. Lateral cracking occurred at the interface of the coating/substrate following indentation, but in the middle of the coating following scratching. No evidence of plastic flow within the coating was observed. Coating deformation is, therefore, controlled by its fracture energy. An indentation-energy-based model was applied to evaluate the fracture toughness of the coating. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：3196 / 3201

页数：6

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