Corrosion of CrN and TiAlN coatings in chloride-containing atmospheres
Corrosion of CrN and TiAlN coatings in chloride-containing atmospheres
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DOI：
10.1016/s0257-8972(99)00270-4
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发表时间：
1999-09-01
影响因子：
5.4
通讯作者：
Pischow, K
中科院分区：
文献类型：
--
作者：
Cunha, L;Andritschky, M;Pischow, K
用物理气相沉积技术在不锈钢衬底上沉积了铬和钛铝氮化物，并研究了它们在两种不同环境中的腐蚀行为：350℃含HCl的气相环境和室温下1M的HCl水溶液环境。用X射线光电子能谱研究了在气相环境中发生的反应机理。这种分析表明，表面的氧化是由氧取代氮引起的。在水溶液环境中进行了开路电位和动电位极化测量。氮化物涂层的水溶液腐蚀行为强烈依赖于涂层的微缺陷密度。(C)1999 Elsevier Science S.A.保留所有权利。
Chromium and titanium-aluminium nitrides were deposited, by physical vapour deposition techniques, on stainless steel substrates and their corrosion behaviour was studied in two different environments: a gaseous environment containing HCl at a temperature of 350 degrees C and a 1 M HCl aqueous solution environment, at room temperature. X-ray photoelectron spectroscopy was used to study the mechanism of the reactions that occurred in the gaseous environment. This analysis shows an oxidation of the surface caused by the substitution of nitrogen by oxygen. Open circuit potential and potentiodynamic polarisation measurements were performed in the aqueous solution environment. The aqueous corrosion behaviour of the nitride coatings is strongly dependent on the microdefect density of the coating. (C) 1999 Elsevier Science S.A. All rights reserved.