|Investigation of the inner corrosion layer formed in pulse electrodeposition coating on Mg-Sr alloy and corresponding degradation behavior|
|Shangguan, YM; Wan, P; Tan, LL; Fan, XM; Qin, L; Yang, K; Yang, K (reprint author), Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
|发表期刊||JOURNAL OF COLLOID AND INTERFACE SCIENCE
|摘要||Magnesium-based metals are considered as promising biodegradable orthopedic implant materials due to their potentials of enhancing bone healing and reconstruction, and in vivo absorbable characteristic without second operation for removal. However, the rapid corrosion has limited their clinical applications. Ca-P coating by electrodeposition has been supposed to be effective to control the degradation rate and enhance the bioactivity. In this work, a brushite coating was fabricated on the Mg-Sr alloy by pulse electrodeposition (PED) to evaluate its efficacy for orthopedic application. Interestingly, an inner corrosion layer was observed between the PED coating and the alloy substrate. Meanwhile the results of in vitro immersion and electrochemical tests showed that the corrosion resistance of the coated alloy was undermined in comparison with the uncoated alloy. It was deduced that the existence of this corrosion layer was attributed to the worse corrosion performance of the alloy. The mechanism on formation of the inner corrosion layer and its influence on consequent degradation were analyzed. It can be concluded that the electrodeposition coating should be not suitable for those magnesium alloys with poor corrosion resistance such as the Mg-Sr alloy. More importantly, it should be noted that the process of coating formation combined with the nature of substrate alloy is important to evaluate the efficacy of coating for biodegradable Mg-based implants application. (C) 2016 Elsevier Inc. All rights reserved.|
; fan, xinmin] nanjing univ sci & technol, dept mat sci & engn, nanjing 210094, jiangsu, peoples r china
; [shangguan, yongming
; wan, peng
; tan, lili
; yang, ke] chinese acad sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china
; [wan, peng
; qin, ling] chinese univ hong kong, dept orthopaed & traumatol, hong kong, hong kong, peoples r china
|资助者||National High Technology Research and Development Program of China (863 Program) [2015AA033701]; Hong Kong Scholar Program; CAS-Croucher Founding Scheme for Joint Laboratories [CAS14303]; Foundation of Jiangsu Collaborative Innovation Center of Biomedical Functional Materials
|通讯作者||Wan, P; Yang, K (reprint author), Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China.|
Shangguan, YM,Wan, P,Tan, LL,et al. Investigation of the inner corrosion layer formed in pulse electrodeposition coating on Mg-Sr alloy and corresponding degradation behavior[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2016,481:1-12.
Shangguan, YM.,Wan, P.,Tan, LL.,Fan, XM.,Qin, L.,...&Yang, K .(2016).Investigation of the inner corrosion layer formed in pulse electrodeposition coating on Mg-Sr alloy and corresponding degradation behavior.JOURNAL OF COLLOID AND INTERFACE SCIENCE,481,1-12.
Shangguan, YM,et al."Investigation of the inner corrosion layer formed in pulse electrodeposition coating on Mg-Sr alloy and corresponding degradation behavior".JOURNAL OF COLLOID AND INTERFACE SCIENCE 481(2016):1-12.