CHEMICAL CONVERSION FILM ON AZ31 MAGNESIUM ALLOY AND ITS CORROSION RESISTANCE

Cor Sci Pro Tech

2009, Vol. 21

Issue (2): 185-187 DOI:

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CHEMICAL CONVERSION FILM ON AZ31 MAGNESIUM ALLOY AND ITS CORROSION RESISTANCE

LI Chun-mei^1、2; WEI Zhong-ling^1、2; SHEN Yu^1、3; WANG Zeng-hui^1、2; CHEN Qiu-rong^1、3

1Shanghai Institute of Microsystem and Information Technology;Chinese Academy of Sciences; Shanghai 200050;

2Jiaxing Key Laboratory of Light Alloy Technology;Jiaxing 314051; 3Jiaxing Asia Magnesium Technology Co.;Ltd;Chinese Academy of Sciences;Jiaxing 314051

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Abstract

The surface treatment process for AZ31 magnesium alloy using phosphate is investigated.Influence of factors such as pretreatment and process conditions on the quality of chemical conversion film is analyzed. The conversion process and anticorrosion behavior of the alloy are examined by electrochemical means.The surface morphology and composition of the conversion film are observed and analyzed respectively by EPMA.Results show that the chemical conversion film obtained by optimum process is uniform and compact with good protectiveness to the substrate of the magnesium alloy.

Key words: magnesium alloys phosphating chemical conversion corrosion resistance

Received: 27 June 2008

TG174.45

Corresponding Authors: LI Chun-mei E-mail: chmli@mail.sim.ac.cn

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Cite this article:

LI Chun-mei; WEI Zhong-ling; SHEN Yu; WANG Zeng-hui; CHEN Qiu-rong. CHEMICAL CONVERSION FILM ON AZ31 MAGNESIUM ALLOY AND ITS CORROSION RESISTANCE. Cor Sci Pro Tech, 2009, 21(2): 185-187.

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https://www.cspt.org.cn/EN/ OR https://www.cspt.org.cn/EN/Y2009/V21/I2/185

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