Preparation of Al-Cr-Fe Coatings by heat treatment of electrodeposited Cr/Al composite coatings

被引：10
|
作者：
Zhang, Min [1 ]
Chen, Chang'an [2 ]
Zhang, Guikai [2 ]
Rao, Yongchu [2 ]
Ling, Guoping [1 ]
机构：
[1] Zhejiang Univ, Dept Mat Sci & Engn, Hangzhou 310027, Zhejiang, Peoples R China
[2] China Acad Engn Phys, Natl Key Lab Surface Phys, Mianyang 621900, Peoples R China
来源：
INTERNATIONAL FEDERATION FOR HEAT TREATMENT AND SURFACE ENGINEERING (20TH CONGRESS) | 2013年 / 50卷
关键词：
Al-Cr-Fe coatings; electrodeposition; ionic liquid; heat treatment; CORROSION BEHAVIOR; QUASI-CRYSTALLINE; IONIC LIQUID; TEMPERATURE; CHROMIUM;
D O I：
10.1016/j.phpro.2013.11.033
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Al-Cr-Fe coatings have been widely used in the surface engineering field of materials, due to their excellent corrosion resistance to water vapor and fused salt deposits. In this study, a new two-step approach was developed to prepare Al-Cr-Fe coatings on surfaces of SUS430 stainless steels. First, the Cr/Al composite coatings were prepared by electrodepositing Cr from aqueous solution then electrodepositing Al from AlCl3-1-ethyl-3-methyl-imidazolium chloride (AlCl3-EMIC) ionic liquid on SUS430 stainless steel substrate. In the second, heat treatment of the Cr/Al composite coatings was carried out to acquire Al-Cr-Fe coatings. Effects of the thickness of Cr/Al composite coatings, the time and temperature of heat treatment on composition and phase structure of alloy layers were studied by using scanning electron microscope (SEM), backscattered electron (BSE), energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD). The structure transformation process and formation mechanism of Al-Cr-Fe coatings were discussed. (C) 2013 The Authors. Published by Elsevier B.V. Open access under CC BY-NC-ND license.
引用
收藏
页码：206 / 213
页数：8
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