Effects of Interaction of (NaPO3)6 and NaH2PO4 on Ca/P of MAO Bio-ceramic Coating of ZK60 Mg Alloy
Micro-arc oxidation (MAO) process was conducted on ZK60 Mg alloy in a basic biologic electrolyte composed of silicate by addition of (NaPO3)6 and NaH2PO4.The microstructural evolution,phase composition and in vitro corrosion resistance of the coating were investigated by means of scanning electron microscopy (SEM) coupled with an energy dispersive spectrometer (EDS) and X-ray diffraction (XRD).The results revealed that bioactive elements Mg,Ca,P and Si were remained in the bio-ceramic coating which can be prepared in suitable biologic electrolyte.For the interaction of (NaPO3)6 and NaH2PO4,the Ca/P molar ratio of the coating in the optimized biologic electrolyte reached to 1.24 by L9 (34) orthogonal experiments.Compared with the bare ZK60 Mg alloy,the corrosion resistance of the optimized sample in 37℃ Ringers solution was improved by 4 orders.
ZK60 Mg alloy Micro-arc oxidation Bio-ceramic coating Interaction
Cuiling Du Jing Chen Binbin Cao Lei Xu Sheng Lu
School of Materials Science and Engineering, Jiangsu University of Science and Technology,Zhenjiang, 212003 Jiangsu, China
国际会议
the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))
太原
英文
21-27
2012-07-13（万方平台首次上网日期，不代表论文的发表时间）