CORROSION ELECTROCHEMICAL BEHAVIOR OF Ni-B COATING ON MAGNESIUM ALLOY AZ91D PREPARED BY DIRECTLY ELECTROLESS PLATING

Cor Sci Pro Tech

2009, Vol. 21

Issue (2): 191-193 DOI:

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CORROSION ELECTROCHEMICAL BEHAVIOR OF Ni-B COATING ON MAGNESIUM ALLOY AZ91D PREPARED BY DIRECTLY ELECTROLESS PLATING

PENG Shu-he; JIA Fei; TANG Yi; WANG Zhou-cheng

College of Chemistry and Chemical Engineering;Xiamen University;Xiamen 361005

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Abstract

Corrosion electrochemical behavior of a directly electroless-plated Ni-B coating on magnesium alloy was investigated by means of potentiodynamic and electrochemical impendence spectroscopy(EIS).The results indicated that the corrosion resistance of the coating was excellent in 3.5% sodium chloride solution.The corrosion potential was around -400 mV and the current density was less than 0.5 μA/cm²,which exhibits that the coating can significantly enhance the corrosion resistance of the substrate.

Key words: magnesium alloys electroless plating Ni-B coating corrosion electrochemical behavior

Received: 25 June 2008

TG174.44

Corresponding Authors: WANG Zhou-cheng E-mail: zcwang@xmu.edu.cn

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PENG Shu-he; JIA Fei; TANG Yi; WANG Zhou-cheng. CORROSION ELECTROCHEMICAL BEHAVIOR OF Ni-B COATING ON MAGNESIUM ALLOY AZ91D PREPARED BY DIRECTLY ELECTROLESS PLATING. Cor Sci Pro Tech, 2009, 21(2): 191-193.

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https://www.cspt.org.cn/EN/ OR https://www.cspt.org.cn/EN/Y2009/V21/I2/191

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