Comparative XRD and Microstructure Analysis on Biodegradable Mg-Si-Ca Alloys

Abstract:

Biodegradable materials are considered to be the third generation of biomaterials. The aim of these biodegradable alloys is to provide healing and tissue regeneration of the bone. In recent years new types of BM, such as Mg-Si-Ca based alloys were developed and are considered promising candidates for implant materials during a limited time. The effect of Si and Ca addition on pure magnesium alloy has been investigated. The results showed the formation of an intermetallic compound Mg₂Si. Morphology of this compound changed to polyhedral shape with increasing Si addition over 3wt%. The purpose of this paper is to investigate morphological and XRD aspects of casted pure Mg and Mg-XSi-YCa (X – 1.5wt%, 5wt%, 10wt% / Y-0.5wt%, 1wt%, 2wt%) by using optical microscopy, scanning electron microscopy and X-ray diffraction.

• Periodical: Key Engineering Materials (Volume 660)
• Pages: 51-56
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.660.51
• Online since: August 2015
• Authors: Bogdan Istrate, Carmen Iulia Crimu, Sergiu Stanciu, Bogdan Oprisan, Corneliu Munteanu
• Keywords: Biodegradable Alloys, MgCaSi Alloys, SEM, XRD

References

[1] M. Niinomi, Recent metallic materials for biomedical applications, Metallurgical and Materials Transactions A, 33 (2002) 477-486.

DOI: 10.1007/s11661-002-0109-2

[2] Y.F. Zheng, X.N. Gu, F. Witte, Biodegradable metals, Materials Science and Engineering R, 77 (2014) 1-34.

[3] M.P. Staiger, A.M. Pietak, J. Huadmai, G. Dias, Magnesium and its alloys as orthopedic biomaterials: a review. Biomaterials, 27 (2006) 1728–1734.

DOI: 10.1016/j.biomaterials.2005.10.003

[4] F. Witte, N. Hort, C. Vogt, S. Cohen, K. U. Kainer, R. Willumeit, F. Feyerabend, Degradable biomaterials based on magnesium corrosion, Current Opinion in Solid State and Materials Science, 12 (2008) 63–72.

DOI: 10.1016/j.cossms.2009.04.001

[5] N.T. Kirkland, N. Birbilis, J. Walker, T. Woodfield, G.J. Dias, M.P. Staiger, Journal of Biomedical Materials Research Part B: Applied Biomaterials B, 95 (2010) 91–100.

[6] ** ASM Handbook, Alloy Phase Diagrams, Vol 3, (1992).

[7] Y. Wan, G. Xiong, H. Luo, F. He, Y. Huang, X. Zhou, Preparation and characterization of a new biomedical magnesium-calcium alloy, Materials & Design, 29 (2008) 2034–(2037).

DOI: 10.1016/j.matdes.2008.04.017

[8] X.N. Gu, Y.F. Zheng, Y. Cheng, S.P. Zhong, T.F. Xi, In vitro corrosion and biocompatibility of binary magnesium alloys, Biomaterials, 30 (2009) 484–498.

DOI: 10.1016/j.biomaterials.2008.10.021

[9] Z. Li, X. Gu, S. Lou, Y. Zheng, The development of binary Mg-Ca alloys for use as biodegradable materials within bone, Biomaterials, 29 (2008) 1329–1344.

DOI: 10.1016/j.biomaterials.2007.12.021