Electroless Ni-P Plating on the AZ91D Magnesium Alloy

J Chin Soc Corr Pro

2005, Vol. 25

Issue (5): 271-274 DOI:

Research Report

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Electroless Ni-P Plating on the AZ91D Magnesium Alloy

谷长栋 Changdong Gu;;;;

吉林大学南岭校区汽车材料教育部重点实验室

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Abstract Direct electroless Ni-P plating on the AZ91D magnesium alloy from a plating bath containing sulfate nickel was investigated.The morphology and microstructure of the electroless Ni-P coating was studied by using SEM and XRD.The electroless Ni-P coating was compact and no obvious defects.The hardness values of the Ni-P coatings were about 660 VHN and the phosphorus content of this coating was about 3.72 mass%.The deposition rate of the electroless Ni-P alloy was about 23 μm/h.The acid pickle pretreatment on the AZ91D magnesium alloy substrate provides surface pits to act as sites for mechanical interlocki ng to improve adhesion of the coating and the substrate.

Key words: electroless deposition magnesium alloy AZ91D Ni-P alloy

Received: 21 May 2004

ZTFLH:

TQ174.4

Corresponding Authors: 谷长栋 Changdong Gu E-mail: changdong_gu@163.com

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Cite this article:

谷长栋 Changdong Gu. Electroless Ni-P Plating on the AZ91D Magnesium Alloy. J Chin Soc Corr Pro, 2005, 25(5): 271-274 .

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2005/V25/I5/271

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