Deposition Mechanism of Eletroless Plating of Ni-P on AZ91D Magnesium Alloy

作者：Qian Jiangang^*; Teng Xiaoming; Liu Yufen; Huang Wei

来源：Rare Metal Materials and Engineering, 2010, 39(9): 1593-1597.

• AZ91D magnesium alloy
• Ni-P coating
• deposition

The deposition process of electroless plating of Ni-P on AZ91D magnesium alloy was investigated by metallographic microscope, scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). Results show that the initial deposition mechanisms of Ni-P coating in different places of the activated surface are different. There is only nickel (Ni) deposition but no P on "massive object" generated after activation, mainly due to the dissolution of the fluorides and the replacement of Mg for Ni. For beta phase and the edge of alpha phase, adjacent Ni2+ would gain a few electrons lost by Mg and be reduced because of electrochemical effect. The Ni nucleus with high catalytic activity provides the catalysis condition for the reduction of P and Ni.

• 出版日期2010-9
• 单位北京航空航天大学