The Effect of NiAl Coatings on Oxidation Behavior of AISI 403 Stainless Steel
来源期刊：材料热处理学报2004年第5期
论文作者：M. Ebrahimian F.Ashrafizadeh
关键词：oxidation; NiAl; coating; stainless steel;
摘 要：This paper reports the oxidation behavior of stainless steel type 403 as a substrate material with and without NiAl coating. Evaluation of oxidation resistance was performed on uncoated and coated specimens at 850 and 1050℃. A commercial diffusion process was used for the formation of NiAl intermetallic coatings on the specimens. Before aluminizing, a layer of nickel, about 40 μm, was deposited on specimens by electroplating. Various techniques including SEM, EDAX, optical microscopy and micro-hardness testing were employed to investigate the coatings before and after oxidation tests. Nickel-aluminides produced by two stage; plating-aluminizing, treatment with NiAl on the surface increased the performance of stainless steel samples significantly.
M. Ebrahimian1，F.Ashrafizadeh2
(1.Iranian Surface Research & Engineering Centre, Isfahan Science & Technology Town, Isfahan, Iran;
2.Department of Materials Engineering, Isfahan University of Technology, Isfahan, Iran)
摘要:This paper reports the oxidation behavior of stainless steel type 403 as a substrate material with and without NiAl coating. Evaluation of oxidation resistance was performed on uncoated and coated specimens at 850 and 1050℃. A commercial diffusion process was used for the formation of NiAl intermetallic coatings on the specimens. Before aluminizing, a layer of nickel, about 40 μm, was deposited on specimens by electroplating. Various techniques including SEM, EDAX, optical microscopy and micro-hardness testing were employed to investigate the coatings before and after oxidation tests. Nickel-aluminides produced by two stage; plating-aluminizing, treatment with NiAl on the surface increased the performance of stainless steel samples significantly.
关键词:oxidation; NiAl; coating; stainless steel;
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