Wear and corrosion behavior of CrCN/CrN coatings deposited by cathodic arc evaporation on nitrided 42CrMo4 steel substrates

被引：11
|
作者：
Gilewicz, A. [1 ]
Murzynski, D. [1 ]
Dobruchowska, E. [1 ]
Kwiatkowski, J. [1 ]
Olik, R. [1 ]
Ratajski, J. [1 ]
Warcholinski, B. [1 ]
机构：
[1] Koszalin Univ Technol, Fac Technol & Educ, Koszalin, Poland
来源：
PROTECTION OF METALS AND PHYSICAL CHEMISTRY OF SURFACES | 2017年 / 53卷 / 02期
关键词：
CRN/NBN SUPERLATTICE COATINGS; TRIBOLOGICAL PROPERTIES; THIN-FILMS; RESISTANCE; DEFECTS;
D O I：
10.1134/S2070205117020101
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
In the paper, the results of wear and corrosion tests of the CrCN/CrN multilayer coatings, formed by cathodic arc evaporation on 42CrMo4 (AISI 4140) steel substrates are presented. The substrates were subjected to thermo-chemical treatment-nitriding with various nitriding potential. The results of nitriding were determined by XRD and the hardness profile in the samples cross-section. The morphology of thin coatings was examined with SEM. A Vickers FV-700 and Fisherscope HM2000 hardness testers enabled to investigate hardness of steel substrates and CrCN/CrN coatings respectively. A pin-on-disc wear tests were used to determine the hardness and tribological parameters of the coatings: the coefficient of the friction and wear rate. The scratch test and Rockwell test were applied to assess the adhesion of the coatings to the substrates. The corrosion properties of coating-steel substrate systems were investigated using potentiodynamic polarisation tests. Corrosion potential, corrosion current density and polarization resistance were determined. It was found that that the nitriding of steel substrates improves properties of the coating-substrate system. The nitriding 42CrMo4 steel substrate with low nitriding potential enable to obtain substrates without surface "white layer" what favours good adhesion of the coating to the substrate. The CrCN/CrN multilayer coating-steel substrate systems show good mechanical and tribological properties and corrosion resistance.
引用
收藏
页码：312 / 321
页数：10
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