Hostname: page-component-8448b6f56d-gtxcr Total loading time: 0 Render date: 2024-04-23T09:27:19.089Z Has data issue: false hasContentIssue false

Rapid In Vitro Corrosion Induced by Crack-Like Pathway in Biodegradable Mg–10% Ca Alloy

Published online by Cambridge University Press:  06 August 2013

Jae-Young Jung
Affiliation:
Advanced Analysis Center, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea
Sang-Jun Kwon
Affiliation:
Advanced Analysis Center, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea
Hyung-Seop Han
Affiliation:
Center for Biomaterials, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea
Gui Fu Yang
Affiliation:
Center for Biomaterials, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea
Ji-Young Lee
Affiliation:
Center for Biomaterials, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea
Seok-Jo Yang
Affiliation:
Department of Mechatronics, College of Engineering, Chungnam National University, Daejeon 305-764, Republic of Korea
Sung-Youn Cho
Affiliation:
R&D Center, U&i Corporation, Uijeongbu, Kyunggi-do 480-761, Republic of Korea
Pil-Ryung Cha
Affiliation:
School of Advanced Materials Engineering, Kookmin University, Seoul 137-702, Republic of Korea
Young-Yul Kim
Affiliation:
Department of Orthopedics, St. Mary's Hospital, The Catholic University of Korea, Daejeon 301-723, Republic of Korea
Yu-Chan Kim
Affiliation:
Department of Mechatronics, College of Engineering, Chungnam National University, Daejeon 305-764, Republic of Korea
Hyun-Kwang Seok
Affiliation:
Department of Mechatronics, College of Engineering, Chungnam National University, Daejeon 305-764, Republic of Korea
Jae-Pyoung Ahn*
Affiliation:
Advanced Analysis Center, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea
*
*Corresponding author. E-mail: jpahn@kist.re.kr
Get access

Abstract

The in vitro corrosion mechanism of the biodegradable cast Mg–10% Ca binary alloy in Hanks' solution was evaluated through transmission electron microscopy observations. The corrosion behavior depends strongly on the microstructural peculiarity of Mg2Ca phase surrounding the island-like primary Mg phase and the fast corrosion induced by the interdiffusion of O and Ca via the Mg2Ca phase of lamellar structure. At the corrosion front, we found that a nanosized crack-like pathway was formed along the interface between the Mg2Ca phase and the primary Mg phase. Through the crack-like pathway, O and Ca are atomically exchanged each other and then the corroded Mg2Ca phase was transformed to Mg oxides. The in vitro corrosion by the exchange of Ca and O at the nanosized pathway led to the rapid bulk corrosion in the Mg–Ca alloys.

Type
Research Article
Copyright
Copyright © Microscopy Society of America 2013 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Gu, X., Zheng, W., Cheng, Y. & Zheng, Y. (2009). A study on alkaline heat treated Mg–Ca alloy for the control of the biocorrosion rate. Acta Biomater 5(7), 27902799.Google Scholar
Gu, X., Zheng, Y., Zhong, S., Xi, T., Wang, J. & Wang, W. (2010). Corrosion of, and cellular responses to Mg–Zn–Ca bulk metallic glasses. Biomaterials 31(6), 10931103.Google Scholar
Jung, J.Y., Kwon, S.J., Han, H.S., Lee, J.Y., Ahn, J.P., Yang, S.J., Cho, S.Y., Cha, P.R., Kim, Y.C. & Seok, H.K. (2012). In vivo corrosion mechanism by elemental interdiffusion of biodegradable Mg-Ca alloy. J Biomed Mater Res Part B 100B, 22512260.Google Scholar
Kannan, M. & Raman, R. (2008). In vitro degradation and mechanical integrity of calcium-containing magnesium alloys in modified-simulated body fluid. Biomaterials 29(15), 23062314.10.1016/j.biomaterials.2008.02.003Google Scholar
Kim, W.C., Kim, J.G., Lee, J.Y. & Seok, H.K. (2008). Influence of Ca on the corrosion properties of magnesium for biomaterials. Mater Lett 62(25), 41464148.Google Scholar
Li, Z., Gu, X., Lou, S. & Zheng, Y. (2008). The development of binary Mg–Ca alloys for use as biodegradable materials within bone. Biomaterials 29(10), 13291344.Google Scholar
Nie, J.F. & Muddle, B.C. (1997). Precipitation hardening of Mg–Ca(–Zn) alloys. Scr Mater 37(10), 14751481.Google Scholar
Staiger, M., Pietak, A., Huadmai, J. & Dias, G. (2006). Magnesium and its alloys as orthopedic biomaterials: A review. Biomaterials 27(9), 17281734.Google Scholar
Witte, F., Fischer, J., Nellesen, J., Crostack, H., Kaese, V., Pisch, A., Beckmann, F. & Windhagen, H. (2006). In vitro and in vivo corrosion measurements of magnesium alloys. Biomaterials 27(7), 10131018.Google Scholar
Witte, F., Kaese, V., Haferkamp, H., Switzer, E., Meyer-Lindenberg, A., Wirth, C. & Windhagen, H. (2005). In vivo corrosion of four magnesium alloys and the associated bone response. Biomaterials 26(17), 35573563.Google Scholar