Enhancing the performance of calcium phosphate coating on a magnesium alloy for bioimplant applications

Surface modification of magnesium and its biodegradable alloys by calcium orthophosphate coatings to improve corrosion resistance and biocompatibility

“…This resulted in better performance of the pulse-potential coatings, which was attributed to a more closely packed morphology of the protective coatings, which decreased the anodic dissolution of Mg and its alloys (Kannan, 2012;Meng et al, 2011;Srinivasan, Liang, Blawert, Stormer, & Dietzel, 2010;Wang, Guan, et al, 2011;Wang et al, 2010;Zong et al, 2011). This resulted in better performance of the pulse-potential coatings, which was attributed to a more closely packed morphology of the protective coatings, which decreased the anodic dissolution of Mg and its alloys (Kannan, 2012;Meng et al, 2011;Srinivasan, Liang, Blawert, Stormer, & Dietzel, 2010;Wang, Guan, et al, 2011;Wang et al, 2010;Zong et al, 2011).…”

“…Interestingly, the aforementioned biomimetic solutions HBSS Cui et al, 2013;Gan et al, 2013;Geng et al, 2009;Gruba c et al, 2013;Jo et al, 2013;Li et al, 2012aLi et al, , 2012bWang, Tan, et al, 2011;Wang et al, 2013;Waterman et al, 2011;Zhang et al, 2007 and SBF Choudhary, Raman, & Nie, 2012;Gao et al, 2011;Guan et al, 2012;Hahn et al, 2011;Jamesh et al, 2012;Jo et al, 2011;Johnson et al, 2013;Kang et al, 2013;Kannan, 2012Kannan, , 2013Kim et al, 2014;Li et al, 2012a;Liu et al, 2011bLiu et al, , 2014Meng et al, 2011;Noorakma et al, 2013;Pan, Chen, Wang, & Zhao, 2013;Shi, Qi, Chen, & Shi, 2011;Smith et al, 2012;Song et al, 2008Song et al, , 2010Song et al, , 2013Sreekanth & Rameshbabu, 2012;Wang et al, 2007Wang et al, , 2010Xu et al, 2012;Zhang, Dai, et al, 2012;Zhang, Li, et al, 2012;Zhang, Dai, et al, 2013;Zhang, Ma, et al, 2013;…”

“…By these means, CDHA was successfully deposited on MgeZneCa alloy directly, without the need for a transformation step . However, to improve some properties of the coatings, studies are available on the addition of organic solvents, such as alcohol (Kannan, 2012(Kannan, , 2013Song et al, 2013). Furthermore, pulse electrophoresis at 85 C for 30 min revealed a greater adhesion of calcium orthophosphate coatings to MgeZneCa alloys (Shadanbaz & Dias, 2012), while pulse treatments of the coated samples of AM50 alloys at 20 C for 15 min displayed a higher corrosion resistance .…”

Optimized Electrodeposition Concentrations for Hydroxyapatite Coatings on CoCrMo biomedical alloys by computational techniques

“…However, plasma spray method suffers some drawbacks such as, extremely high application temperature which effects homogeneity of the coating and structure of metallic implant [8], unpredictable phase changes of CaP ceramics during the coating process, particle release and delamination [6]. From these methods electrodeposition takes a place with some benefits: the coating process occurs at low temperature and the chemical composition could be controlled [9], ease of operation and practicability for substrates with complex geometries [10]. Because of these considerable advantages, in this study electrodeposition methods are applied to synthesize hydroxyapatite layers on metallic biomaterial.…”

An Outlook on Magnesium-Based Biodegradable Implants

“…Importantly, the coating should be biocompatible and biodegradable with degradation rate lower than that of magnesium alloys. Recent studies on calcium phosphate and polymer coatings on magnesium alloys have shown significant improvement in the general and localized degradation resistance [17][18][19]. Hence, the outlook for magnesium-based biodegradable implants seems promising.…”