High-temperature Compressive Performance of Mg Alloy Foams Coated with Ni-P Layer  

作　　者：LU Xiaotong LUO Hongjie ZHANG Zhigang DU Hao HUANG Wenzhan 卢晓通;罗洪杰;ZHANG Zhigang;DU Hao;HUANG Wenzhan(School of Metallurgy,Northeastern University,Shenyang 110819,China;Engineering Technology Research Center of Ministry of Education for Materials Advanced Preparation,Shenyang 110819,China;Institute of Metal Research,The Chinese Academy of Sciences,Shenyang 110015,China)

机构地区：[1]School of Metallurgy,Northeastern University,Shenyang 110819,China [2]Engineering Technology Research Center of Ministry of Education for Materials Advanced Preparation,Shenyang 110819,China [3]Institute of Metal Research,The Chinese Academy of Sciences,Shenyang 110015,China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2020年第4期805-811,共7页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the National Natural Science Foundation of China(Nos.51874093,51174060,and 51661031);the Fundamental Research Funds for the Central Universities(N182504015);the Liaoning Province Key r&d Project(No.2019JH2/10100008)。

摘　　要：Mg/Ni hybrid foams were fabricated by the electroless method.The Ni-P(Nickel-Phosphorous)coatings were deposited on the surface of closed-cell Mg alloy foams.The composition,microstructure and phases of the Ni-P coatings were characterized by scanning electron microscopy(SEM),energy-dispersive X-ray spectroscopy(EDS)and X-ray diffraction(XRD),respectively.The compressive tests were performed on the Mg/Ni hybrid foams at 400℃using the Mg alloy foams as a reference.The experimental results show that the yield strength,plateau stress and energy absorption capacity of the closed-cell Mg alloy foams at high temperature were improved by the Ni-P coating.And there are four main modes for the Mg/Ni hybrid foam failure at 400℃,i e,shearing in cell wall,bending in cell edge,shedding and cracking in Ni-P coating.

关 键 词：Mg alloy foams electroless plating high temperature compressive behavior Ni-P coating 

分 类 号：TG174.4[金属学及工艺—金属表面处理]