TY - JOUR
T1 - Effect of pickling processes on the microstructure and properties of electroless Ni-P coating on Mg-7.5Li-2Zn-1Y alloy
AU - Xu, Chunjie
AU - Chen, Liping
AU - Yu, Ling
AU - Zhang, Jinxiao
AU - Zhang, Zhongming
AU - Wang, Jincheng
N1 - Publisher Copyright:
© 2014 Chinese Materials Research Society.
PY - 2014/12/1
Y1 - 2014/12/1
N2 - The electroless plating Ni-P is prepared on the surface of Mg-7.5Li-2Zn-1Y alloys with different pickling processes. The microstructure and properties of Ni-P coating are investigated. The results show that the Ni-P coatings deposited using the different pickling processes have a different high phosphorus content amorphous Ni-P solid solution structure, and the Ni-P coatings exhibit higher hardness. There is higher phosphorus content of Ni-P amorphous coating using 125g/L CrO3 and 110ml/L HNO3 (w=68%) than using 180g/L CrO3 and 1g/L KF during pre-treatment, and the coating structure is more compact, and the Ni-P coatings exhibit more excellent adhesion with substrate (Fc up to 22N). The corrosion potential of Ni-P coating is improved and exhibits good corrosion resistance. As a result, Mg-7.5Li-2Zn-1Y alloy is remarkably protected by the Ni-P coating.
AB - The electroless plating Ni-P is prepared on the surface of Mg-7.5Li-2Zn-1Y alloys with different pickling processes. The microstructure and properties of Ni-P coating are investigated. The results show that the Ni-P coatings deposited using the different pickling processes have a different high phosphorus content amorphous Ni-P solid solution structure, and the Ni-P coatings exhibit higher hardness. There is higher phosphorus content of Ni-P amorphous coating using 125g/L CrO3 and 110ml/L HNO3 (w=68%) than using 180g/L CrO3 and 1g/L KF during pre-treatment, and the coating structure is more compact, and the Ni-P coatings exhibit more excellent adhesion with substrate (Fc up to 22N). The corrosion potential of Ni-P coating is improved and exhibits good corrosion resistance. As a result, Mg-7.5Li-2Zn-1Y alloy is remarkably protected by the Ni-P coating.
KW - Corrosion resistance
KW - Electrochemical properties
KW - Electroless plating Ni-P
KW - Magnesium-lithium alloy
KW - Pickling process
UR - http://www.scopus.com/inward/record.url?scp=84919841392&partnerID=8YFLogxK
U2 - 10.1016/j.pnsc.2014.10.014
DO - 10.1016/j.pnsc.2014.10.014
M3 - 文章
AN - SCOPUS:84919841392
SN - 1002-0071
VL - 24
SP - 655
EP - 662
JO - Progress in Natural Science: Materials International
JF - Progress in Natural Science: Materials International
IS - 6
ER -