Corrosion and nanomechanical properties of vanadium carbide thin film coatings of tool steel

被引：34

作者：

Aguzzoli, C. ^{[1
,2
]}

Figueroa, C. A. ^{[1
]}

de Souza, F. S. ^{[3
]}

Spinelli, A. ^{[3
]}

Baumvol, I. J. R. ^{[1
,2
]}

机构：

[1] Univ Caxias do Sul, Ctr Ciencias Exatas & Tecnol, BR-95070560 Caxias Do Sul, RS, Brazil

[2] Univ Fed Rio Grande do Sul, Inst Fis, BR-91501970 Porto Alegre, RS, Brazil

[3] Univ Fed Santa Catarina, Dept Quim, BR-88040900 Florianopolis, SC, Brazil

来源：

SURFACE & COATINGS TECHNOLOGY | 2012年 / 206卷 / 10期

关键词：

Tool steel; Pitting corrosion; EIS; Cyclic polarization; MECHANICAL-PROPERTIES; HARD COATINGS; TIN COATINGS; CARBON; BEHAVIOR; PLASMA; DC; NANOINDENTATION; MICROSTRUCTURE; MICROSCOPY;

D O I：

10.1016/j.surfcoat.2011.11.042

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The corrosion and nanomechanical characteristics of tool steel coated with vanadium carbide thin films deposited by DC reactive magnetron sputtering were investigated. Cyclic polarization and electrochemical impedance spectroscopy measurements in a 3.5% sodium chloride solution indicated that corrosion decreases as the C content and the substrate temperature during deposition increase. The maximum hardness is reached for VC coatings with C/V ratios around unity, decreasing for either higher or lower C/V ratios. Complementary physicochemical analyses, made here or elsewhere, are used to clarify the reasons for such behavior. The present results are discussed in terms of the optimization of the deposition parameters aiming at concomitantly good corrosion resistance and high hardness. (C) 2011 Published by Elsevier B.V.

引用

页码：2725 / 2731

页数：7

共 43 条

[1] Physicochemical and structural characteristics of TiC and VC thin films deposited by DC reactive magnetron sputtering [J].