Bioactivity and electrochemical behavior of hydroxyapatite-silicon-multi walled carbon nano-tubes composite coatings synthesized by EPD on NiTi alloys in simulated body fluid

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• 作者：V. Khalili^a ; ^{V_khalili@sut.ac.ir} ; ^{Vida.khalili@gmail.com} ; J. Khalil-Allafi^b ; J. Frenzel^c ; G. Eggeler^c
• 关键词：Composite coating ; Bioactivity ; Simulated body fluid ; Electrophoretic deposition ; Hydroxyapatite ; Electrochemical behavior
• 刊名：Materials Science and Engineering: C
• 出版年：2017
• 出版时间：1 February 2017
• 年：2017
• 卷：71
• 期：Complete
• 页码：473-482
• 全文大小：2647 K
• 卷排序：71

文摘

The composite coatings of HA, Si and MWCNTs was prepared using electrophoretic deposition. The presence of 1 wt.% MWCNTs in the HA coating provides more nucleation cites of apatite crystallites in SBF. The presence of Si in HA coating increases the growth rate of apatite crystallites with the Ca/P atomic ratio of 1.67. The EIS indicate the compact HA-20%Si and HA-20%Si-1%MWCNTs coatings efficiently increase corrosion resistance of NiTi. The porous HA and HA-1%MWCNTs do not increase significantly corrosion resistance due to the easy diffusion path.