Corrosion Behavior of Porous Mg Alloy in Simulated Body Fluid

Abstract:

Magnesium (Mg) alloy possess a high demand in biomedical applications due to their biocompatibility and biodegradability. However the main limitation for Mg alloy is their fast degradation rates in physiological environment. This paper reports the preparation of porous Mg alloy through powder metallurgy technique by using ammonium bicarbonate (NH₄HCO₃) as space holder material and hexane as solvent. The corrosion behavior and degradation rate of porous Mg alloy was measured after 24h, 96h and 168h respectively of immersion in simulated body fluid (SBF) with compact Mg alloy as control. The results reported that degradation rate increased with increasing immersion period, yet the compact Mg alloy shows better degradation rate than porous Mg alloy. Moreover, the pH of SBF changed proportional to immersion period and stabilized after 96h of immersion.

• Periodical: Applied Mechanics and Materials (Volumes 754-755)
• Pages: 1093-1097
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.754-755.1093
• Online since: April 2015
• Authors: Husna Z. Nurul*, Chang Chuan Lee, Siti Norbahiyah, A.B. Sanuddin, M.Z. Zamzuri
• Keywords: Biocompatibility, Biodegradability, Corrosion Behavior, Porous Mg Alloy, Simulated Body Fluid

References

[1] M. Razavi, M. Fathi, O. Savabi, B. H. Beni, S. M. Razavi, D. Vashaee, and L. Tayebi, Coating of biodegradable magnesium alloy bone implants using nanostructured diopside (CaMgSi2O6), Appl. Surf. Sci., vol. 288, p.130–137, Jan. (2014).

DOI: 10.1016/j.apsusc.2013.09.160

[2] J. Wang, L. Qin, K. Wang, J. Wang, Y. Yue, Y. Li, J. Tang, and W. Li, Cytotoxicity studies of AZ31D alloy and the effects of carbon dioxide on its biodegradation behavior in vitro., Mater. Sci. Eng. C. Mater. Biol. Appl., vol. 33, no. 7, p.4416–26, Oct. (2013).

DOI: 10.1016/j.msec.2013.06.041

[3] M. Razavi, M. H. Fathi, and M. Meratian, Microstructure, mechanical properties and bio-corrosion evaluation of biodegradable AZ91-FA nanocomposites for biomedical applications, Mater. Sci. Eng. A, vol. 527, no. 26, p.6938–6944, Oct. (2010).

DOI: 10.1016/j.msea.2010.07.063

[4] M. Razavi, M. H. Fathi, and M. Meratian, Fabrication and characterization of magnesium–fluorapatite nanocomposite for biomedical applications, Mater. Charact., vol. 61, no. 12, p.1363–1370, Dec. (2010).

DOI: 10.1016/j.matchar.2010.09.008

[5] F. Wu, C. Liu, B. O'Neill, J. Wei, and Y. Ngothai, Fabrication and properties of porous scaffold of magnesium phosphate/polycaprolactone biocomposite for bone tissue engineering, Appl. Surf. Sci., vol. 258, no. 19, p.7589–7595, Jul. (2012).

DOI: 10.1016/j.apsusc.2012.04.094

[6] T. Kokubo and H. Takadama, How useful is SBF in predicting in vivo bone bioactivity?, Biomaterials, vol. 27, no. 15, p.2907–15, May (2006).

DOI: 10.1016/j.biomaterials.2006.01.017

[7] C. Wen, M. Mabuchi, Y. Yamada, K. Shimojima, Y. Chino, and T. Asahina, Processing of biocompatible porous Ti and Mg, Scr. Mater., vol. 45, no. 10, p.1147–1153, Nov. (2001).

DOI: 10.1016/s1359-6462(01)01132-0

[8] Nurul Husna Z., C.C. Lee, S. Norbahiyah, A.B. Sanuddin, Processing and characterization of porous Mg alloy for biomedical applications, Aust. J. Basic Appl. Sci. (Accepted to be publish).

[9] M. P. Staiger, A. M. Pietak, J. Huadmai, and G. Dias, Magnesium and its alloys as orthopedic biomaterials: a review., Biomaterials, vol. 27, no. 9, p.1728–34, Mar. (2006).

DOI: 10.1016/j.biomaterials.2005.10.003

[10] H. Zhuang, Y. Han, and A. Feng, Preparation, mechanical properties and in vitro biodegradation of porous magnesium scaffolds, Mater. Sci. Eng. C, vol. 28, no. 8, p.1462–1466, Dec. (2008).

DOI: 10.1016/j.msec.2008.04.001

[11] X. N. Gu, W. R. Zhou, Y. F. Zheng, Y. Liu, and Y. X. Li, Degradation and cytotoxicity of lotus-type porous pure magnesium as potential tissue engineering scaffold material, Mater. Lett., vol. 64, no. 17, p.1871–1874, Sep. (2010).

DOI: 10.1016/j.matlet.2010.06.015

[12] J. Čapek and D. Vojtěch, Properties of porous magnesium prepared by powder metallurgy, Mater. Sci. Eng. C, vol. 33, no. 1, p.564–569, Jan. (2013).

DOI: 10.1016/j.msec.2012.10.002

[13] M. Razavi, M. H. Fathi, and M. Meratian, Bio-corrosion behavior of magnesium-fluorapatite nanocomposite for biomedical applications, Mater. Lett., vol. 64, no. 22, p.2487–2490, Nov. (2010).

DOI: 10.1016/j.matlet.2010.07.079

[14] Y. Z. Yong Wang, Mei Wei, Jiacheng Gao, Jinzhu Hu, Corrosion process of pure magnesium in simulated body fluid, Mater. Lett., vol. 62, p.2181–2184, (2008).

DOI: 10.1016/j.matlet.2007.11.045