Corrosion behaviour of CrN/Cr multilayers on stainless steel deposited by unbalanced magnetron sputtering

被引：76
作者：
Chipatecua, Y. L. [1 ]
Olaya, J. J. [1 ]
Arias, Diego F. [2 ]
机构：
[1] Univ Nacl Colombia, Fac Engn, Mech & Mechatron Engn Dept, Bogota 14490, Colombia
[2] Univ Nacl Colombia, Dept Phys, Fac Sci, Manizales, Colombia
来源：
VACUUM | 2012年 / 86卷 / 09期
关键词：
Corrosion; CrN/Cr; Multilayers; Sputtering; ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY; CHROMIUM NITRIDE COATINGS; NACL AQUEOUS-SOLUTION; PVD COATED STEELS; TIN/TI MULTILAYERS; BILAYER PERIOD; HARD COATINGS; WEAR BEHAVIOR; RESISTANCE; FILMS;
D O I：
10.1016/j.vacuum.2012.01.016
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper reports the results of the influence of bilayer period (A) and total thickness (f) on the corrosion resistance of magnetron-sputtered CrN/Cr multilayers. Corrosion tests were carried out by potentiodynamic polarization with 0.5 M H2SO4 + 0.05 M KSCN solution and electrochemical impedance spectroscopy (EIS) with 3% NaCl solution. Measurements were also taken on the uacoated substrate and hard chromium coatings for comparison. Multilayer microstructure and morphology were studied by X-ray diffraction (XRD), atomic force microscopy (AFM) and scanning electron microscopy (SEM) and chemical composition was studied by energy dispersive X-ray analysis (EDX). The experiments showed that CrN/Cr coatings having lower bilayer period and lower thickness increased their efficiency as a barrier and improved the corrosion resistance of all coatings evaluated. (C) 2012 Elsevier Ltd. All rights reserved.
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收藏
页码：1393 / 1401
页数：9
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