Evaluation of the Quality of Coatings Deposited on AZ31 Magnesium Alloy Using the Anodising Method / Ocena Jakości Powłok Wykonanych Na Stopie Magnezu Az31 Metodą Anodowania

Archives of Metallurgy and Materials

B. Oleksiak¹  J. Wieczorek²  J. Mizera³  P. Maj³  K. Kulikowski⁴ 

[1] SILESIAN UNIVERSITY OF TECHNOLOGY, FACULTY OF MATERIAL SCIENCE AND METALLURGY, INSTITUT OF METALS TECHNOLGY, 8 KRASI?SKIEGO STR., 40-019 KATOWICE, POLAND;SILESIAN UNIVERSITY OF TECHNOLOGY, FACULTY OF MATERIAL SCIENCE AND METALLURGY, INSTITUTE OF MATERIALS SCIENCE, 8 KRASI?SKIEGO STR., 40-019 KATOWICE POLAND;WARSAW UNIVERSITY OF TECHNOLOGY, FACULTY OF MATERIALS SCIENCE AND ENGINEERING, DIVISION OF MATERIALS DESIGN, 141 WO?OSKA STR., 02-507 WARSZAWA POLAND;WARSAW UNIVERSITY OF TECHNOLOGY, FACULTY OF MATERIALS SCIENCE AND ENGINEERING, DIVISION OF SURFACE ENGINEERING, 141 WO?OSKA STR, 02-507 WARSZAWA, POLAND

关键词: Keywords: magnesium alloys;    protective coatings;    anodising;    scratch test;    erosion testing;   

DOI  :  10.1515/amm-2015-0455

学科分类：金属与冶金

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

【 摘 要 】

The paper presents results of a study on the quality of coatings deposited on surfaces of AZ31 magnesium alloy products. In order to obtain protective coatings (corrosion and erosive wear protection), the methods of anodising (specimens A, B and C) and, for comparison, electroless plating (specimen D) were applied. The assessment of coating quality was based on the scratch test results. The results were used for determination of critical loads resulting in coating rupture. The best result was obtained for the specimen B (sulphuric acid anodising in combination with sealing): the critical load was 7.5 N. The smallest value (5.5 N) was observed for the specimen D, i.e. the coating produced using the electroless plating method. Moreover, erosion resistance of the coatings was assessed. In this case, a depth of the wear trace due to an erodent agent (SiC powder) effects was investigated. The results are comparable to those obtained in the scratch test. The poorest erosion resistance is demonstrated by the coating D and the best resistance is observed for the coating B.

【 授权许可】

Unknown