Abstract
In this study, a nano-composite composed of gelatin as the matrix and Si-Mg-FA nano-particles as an additive was deposited on the AZ31 Mg alloy via dip coating method. In addition, a coating composed of MgO, MgSiO3 and Mg2SiO4 phases was applied on the AZ31 Mg alloy by anodizing process. It was found that the Nano-composite coating with a uniform distribution of nano-particles within the gelatin matrix with the thickness of about 9 µm was dense, crack-free and uniform whereas the surface of anodized layer was relatively coarse due to the presence of flaws and micro-cracks. The surface morphology, EDS analysis and FTIR results revealed the ability of nano-composite coated specimen to form the bone-like apatite. Due to the presence of aforementioned phases and special surface features, the anodized specimen possessed higher and lower corrosion resistance than uncoated and nano-composite coated specimens, respectively. The passive coating resistances (RCT) of nano-composite, anodized specimen and uncoated samples were 2164, 1449 and 1024 Ω cm2, respectively.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
Yang, L. and Zhang, E., Biocorrosion behavior of magnesium alloy in different simulated fluids for biomedical application, Mater. Sci. Eng. C, 2009, vol. 29, pp. 1691–1696.
Staiger, M.P., Pietak, A.M., Huadmai, J., et al., Magnesium and its alloys as orthopedic biomaterials: a review, Biomaterials, 2006, vol. 27, pp. 1728–1734.
Zhao, L., Cui, C., Wang, Q., et al., Growth characteristics and corrosion resistance of micro-arc oxidation coating on pure magnesium for biomedical applications, Corros. Sci., 2010, vol. 52, pp. 2228–2234.
Degnera, J., Singer, F., Cordero, L., et al., Electrochemical investigations of magnesium in DMEM with biodegradable polycaprolactone coating as corrosion barrier, Appl. Surf. Sci., 2013, vol. 282, pp. 264–270.
Chai, L., Yu, X., Yang, Z., et al., Anodizing of magnesium alloy AZ31 in alkaline solutions with silicate under continuous sparking, Corros. Sci., 2008, vol. 50, pp. 3274–3279.
Razavi, M., Fathi, M., Savabi, O., et al., A review of degradation properties of Mg based biodegradable implants, Res. Rev. Mater. Sci. Chem., 2012, vol. 1, pp. 15–58.
Wang, Y.M., Guo, J.W., Shao, Z.K., et al., A metasilicate- based ceramic coating formed on magnesium alloy by microarc oxidation and its corrosion in simulated body fluid, Surf. Coat. Tech., 2013, vol. 219, pp. 8–14.
Wong, H.M., Yeung, K.W.K., Lam, K.O., et al., A biodegradable polymer-based coating to control the performance of magnesium alloy orthopedic implants, Biomaterials, 2010, vol. 31, pp. 2084–2096.
Razavi, M., Fathi, M., Savabi, O., et al., Micro-arc oxidation and electrophoretic deposition of nano-grain merwinite (Ca3MgSi2O8) surface coating on magnesium alloy as biodegradable metallic implant, Surf. Interface Anal., 2014, vol. 46, pp. 387–392.
Razavia, M., Fathi, M., Savabi, O., et al., Nanostructured merwinite bioceramic coating on Mg alloy deposited by electrophoretic deposition, Ceram. Int., 2014, vol. 40, pp. 9473–9484.
Walsh, F.C., Low, C.T.J., Wood, R.J.K., et al., Plasma electrolytic oxidation (PEO) for production of anodised coatings on lightweight metal (Al, Mg, Ti) alloys, Trans. IMF, 2009, vol. 87, pp. 122–135.
Dadash, M.S., Karbasi, S., Esfahani, M.N., et al., Influence of calcinated and noncalcinated nanobioglass particles on hardness and bioactivity of sol–gelderived TiO2–SiO2 nanocomposite coatings on stainless steel substrates, J. Mater. Sci.–Mater. Med., 2011, vol. 22, pp. 829–838.
Dorozhkin, S.V., Bioceramics of calcium orthophosphates, Biomaterials, 2013, vol. 1, pp. 1465–1485.
Sell, S.A., Wolfe, P.S., Garg, K., et al., The Use of Natural Polymers in Tissue Engineering: A Focus on Electrospun Extracellular Matrix Analogues, Polymers, 2010, vol. 2, pp. 522–553.
Ahmadi, T., Monshi, A., Mortazavi, V., et al., Synthesis and dissolution behavior of nanosized silicon and magnesium co-doped fluorapatite obtained by high energy ball milling, Ceram. Int., 2014, vol. 4, pp. 8341–8349.
Kokubo, T. and Takadama, H., How useful is SBF in predicting in vivo bone bioactivity?, Biomaterials, 2006, vol. 27, pp. 2907–2915.
Lia, L.H., Konga, Y.M., Kima, H.W., et al., Improved biological performance of Ti implants due to surface modification by micro-arc oxidation, Biomaterials, 2004, vol. 25, pp. 2867–2875.
Zhang, Y., Yan, C., Wang, F., and Li, W., Electrochemical behavior of anodized Mg alloy AZ91D in chloride containing aqueous solution, Corros. Sci., 2005, vol. 47, pp. 2816–2831.
Xu, L., Zhang, E., Yin, D., et al., In vitro corrosion behavior of Mg alloys in a phosphate buffered solution for bone implant application, J. Mater. Sci.–Mater. Med., 2008, vol. 19, pp. 1017–1025.
Hanifi, A., Fathi, M., Mir Mohammad Sadeghi, H., et al., Mg2+ substituted calcium phosphate nano particles synthesis for non-viral gene delivery application, J. Mater. Sci.–Mater. Med., 2010, vol. 21, pp. 2393–2401.
Cui, X., Li, Y., Li, Q., et al., Influence of phytic acid concentration on performance of phytic acid conversion coatings on the AZ91D magnesium alloy, Mater. Chem. Phys., 2008, vol. 111, pp. 503–507.
Udhayan, R. and Devendra, P.B., On the corrosion behaviour of magnesium and its alloys using electrochemical techniques, J. Power Sources, 1996, vol. 563, pp. 103–107.
Ashassi-Sorkhabi, H. and Eshaghi, M., Corrosion resistance enhancement of electroless Ni–P coating by incorporation of ultrasonically dispersed diamond nanoparticles, Corros. Sci., 2013, pp. 77, pp. 185–193.
Author information
Authors and Affiliations
Corresponding author
Additional information
The article is published in the original.
About this article
Cite this article
Jafarzadeh, A., Ahmadi, T., Dehaghani, M.T. et al. Synthesis, Corrosion and Bioactivity Evaluation of Gelatin/Silicon and Magnesium Co-Doped Fluorapatite Nanocomposite Coating Applied on AZ31 Mg Alloy. Russ. J. Non-ferrous Metals 59, 458–464 (2018). https://doi.org/10.3103/S1067821218040077
Received:
Published:
Issue Date:
DOI: https://doi.org/10.3103/S1067821218040077