Depth-Profiles of Corrosion Properties of Carbonitrided AISI 405 Steel

Archives of Metallurgy and Materials

K. Jagielska-Wiaderek¹ 

[1] Department of Chemistry, Czestochowa University of Technology, 42-200 Czestochowa, 19 Armii Krajowej Av., Poland;

关键词: Keywords: corrosion;    depth profile;    stainless steel;    carbonitrided;    fluid flow;   

DOI  :  10.2478/v10172-012-0068-6

学科分类：金属与冶金

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

Electrochemical polarisation characteristics of AISI 405 type stainless steel, carbonitrided in fluid flow, are presented. The evaluation of the corrosion resistance of carbonitrided stainless steel was carried out by using the so called progressive thinning method, consisting in determination of polarisation characteristics on increasingly-deeper situated regions of the top layer. This method made it possible to determine changes in particular corrosion parameters read out from potentiokinetic polarisation curves, thus enabling the depth profiles of these parameters. The resistance of the AISI 405 steel against acid corrosion was determined in acidified 0.5M sulphate solutions having three different pH values, namely 1, 2 and 4. The thickness of the carbonitrided layer has been evaluated on the basis of the spectrophotometric analysis of carbon content and microhardness on the cross section of the surfacial layer.

【 授权许可】

Unknown