Electrochemical impedance spectroscopy of PVD-TiN coatings on mild steel and AISI316 substrates

被引：47

作者：

Liu, C ^{[1
]}

Leyland, A ^{[1
]}

Lyon, S ^{[1
]}

Matthews, A ^{[1
]}

机构：

[1] UMIST, CTR CORROS & PROTECT, MANCHESTER M60 1QD, LANCS, ENGLAND

来源：

SURFACE & COATINGS TECHNOLOGY | 1995年 / 76-77卷 / 1-3期

关键词：

electrochemical behavior; corrosion; physical vapour deposition; TiN coatings;

D O I：

10.1016/0257-8972(95)02545-6

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The electrochemical and corrosion behavior of PVD-TIN coatings was investigated through electrochemical impedance spectroscopy (EIS) in a 3% NaCl solution. Mild steel (active) and AIS1316 stainless steel (passive) substrates were employed. The results indicated that it was possible to follow the corrosion of the active substrate using EIS over a period of 500 h immersion. The AIS1316 substrate, however, remained effectively passive for the duration of the experiment. Based on this study, the EIS technique certainly shows promise in assessing the corrosion performance (and the coating quality) of electron-beam plasma-assisted PVD-TiN coatings on active substrates such as mild steel. Its usefulness on passive materials appears more limited, owing to the similarity of the electrochemical impedance response of the coating and substrate.

引用

页码：615 / 622

页数：8

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