In Vitro Degradation of Ultrafine Grained Mg-Zn-Ca Alloy by High-Pressure Torsion in Simulated Body Fluid

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In this paper the in vitro degradation of ultrafine grained (UFG) Mg-Zn-Ca alloy produced by HPT was investigated by electrochemical measurements and immersion tests in SBF. It was found that UFG Mg alloy had better degradation properties and also higher microhardness value than as-cast Mg alloy. The corrosion current density of UFG Mg alloy decreased by about two orders of magnitude, compared with that of as-cast alloy. Through electrochemical impedance spectroscopy (EIS) test,UFG Mg alloy showed a higher charge transfer resistance value. In immersion test, UFG Mg alloy in SBF exhibited more uniform corrosion and lower degradation rate (0.0763 mm/yr) than as-cast alloy. The degradation properties were related with the microstructure evolution, namely the grain refinement and redistribution of second phase. Keywords: Mg-Zn-Ca alloy; High-pressure torsion (HPT); Degradation behavior; Simulated body fluid (SBF); Microhardness

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Periodical:

Materials Science Forum (Volumes 706-709)

Main Theme:

Edited by:

T. Chandra, M. Ionescu and D. Mantovani

Pages:

504-509

Citation:

S. K. Guan et al., "In Vitro Degradation of Ultrafine Grained Mg-Zn-Ca Alloy by High-Pressure Torsion in Simulated Body Fluid", Materials Science Forum, Vols. 706-709, pp. 504-509, 2012

Online since:

January 2012

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$38.00

[1] Witte F, et al. In vitro and in vivo corrosion measurements of magnesium alloys, Biomaterials 27(2006) 1013-1018.

[2] Wang HX, Guan SK, Wang X, Ren CX, Wang LG, In vitro degradation and mechanical integrity of Mg–Zn–Ca alloy coated with Ca-deficient hydroxyapatite by the pulse electrodeposition process, Acta Biomaterialia 6(2010) 1743-1748.

DOI: https://doi.org/10.1016/j.actbio.2009.12.009

[3] Kannan MB, Raman RKS, In vitro degradation and mechanical integrity of calcium-containing magnesium alloys in modified-simulated body fluid, Biomaterials 29(2008) 2306-(2014).

DOI: https://doi.org/10.1016/j.biomaterials.2008.02.003

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

DOI: https://doi.org/10.1016/j.biomaterials.2007.12.021

[5] Song G, Atrens A, Corrosion mechanisms of magnesium alloys, Adv Eng Mater 1(1999) 11–33.

[6] M. Bobby Kannan, R.K. Singh Raman, In vitro degradation and mechanical integrity of calcium-containing, Biomaterials 29(2008) 2306–2314.

DOI: https://doi.org/10.1016/j.biomaterials.2008.02.003

[7] Valiev RZ, Islamgaliev RK, Alexandrov IV, Bulk nanostructured materials from severe plastic deformation, Prog Mater Sci 45(2000) 103-189.

DOI: https://doi.org/10.1016/s0079-6425(99)00007-9

[8] Zhilyaev AP, Langdon TG, Using high-pressure torsion for metal processing: Fundamentals and applications, Prog Mater Sci 53(2008) 893–979.

DOI: https://doi.org/10.1016/j.pmatsci.2008.03.002

[9] Balyanov A, et al, Corrosion resistance of ultra fine-grained Ti, Scr. Mater. 51(2004) 225–229.

DOI: https://doi.org/10.1016/s1359-6462(04)00235-0

[10] Hiroyuki Miyamoto, Kohei Harada, Takuro Mimaki, Alexei Vinogradov, Satoshi Hashimoto, Corrosion of ultra-fine grained copper fabricated by equal-channel angular pressing, Corros. Sci. 50(2008) 1215-1220.

DOI: https://doi.org/10.1016/j.corsci.2008.01.024

[11] Čížek J, et al, Microstructure and thermal stability of ultra fine grained Mg-based alloys prepared by high-pressure torsion, Mater. Sci. Eng. A 462(2007) 121–126.

DOI: https://doi.org/10.1016/j.msea.2006.01.177

[12] Faghihi S, Azaria F, Zhilyaev AP, Szpunar JA, Vali H, Tabrizian M, Cellular and molecular interactions between MC3T3-E1 pre-osteoblasts and nanostructured titanium produced by high-pressure torsion, Biomaterials 28(2007) 3887–3895.

DOI: https://doi.org/10.1016/j.biomaterials.2007.05.010

[13] Zhilyaev AP, Nurislamova GV, Kim B-K, Baró MD, Szpunar JA, Langdon TG, Experimental parameters influencing grain refinement and microstructural evolution during high-pressure torsion, Acta Mater. 51(2003) 753–765.

DOI: https://doi.org/10.1016/s1359-6454(02)00466-4

[14] Tadashi Kokubo, Hiroaki Takadama, How useful is SBF in predicting in vivo bone bioactivity?. Biomaterials 27(2006) 2907–2915.

DOI: https://doi.org/10.1016/j.biomaterials.2006.01.017

[15] Wen Z, Wu C, Dai C, Yang F, Corrosion behaviors of Mg and its alloys with different Al contents in a modified simulated body fluid, J. Alloys Comp. 488(2009) 392–399.

DOI: https://doi.org/10.1016/j.jallcom.2009.08.147

[16] Stern M, Geary AL. Electrochemical Polarization: I. A Theoretical Analysis of the Shape of Polarization Curves. J Electrochem Soc 104(1957) 56-63.

DOI: https://doi.org/10.1149/1.2428473

[17] Song YW, Shan DY, Chen RS, Han EH, Effect of second phases on the corrosion behavior of wrought Mg-Zn-Y-Zr alloy, Corros. Sci. 52 (2010) 1830–1837.

DOI: https://doi.org/10.1016/j.corsci.2010.02.017

[18] Brunner JG, May J, Höppel HW, Göken M, Virtanen S, Localized corrosion of ultrafine-grained Al–Mg model alloys, Electrochimica Acta 55(2010) 1966-(1970).

DOI: https://doi.org/10.1016/j.electacta.2009.11.016

[19] Yu B, Woo P, Erb U, Corrosion behaviour of nanocrystalline copper foil in sodium hydroxide solution, Scr. Mater. 56(2007) 353-356.

DOI: https://doi.org/10.1016/j.scriptamat.2006.11.007