Effects of secondary phase and grain size on the corrosion of biodegradable Mg-Zn-Ca alloys

被引：208

作者：

Lu, Y. ^{[1
]}

Bradshaw, A. R. ^{[1
]}

Chiu, Y. L. ^{[1
]}

Jones, I. P. ^{[1
]}

机构：

[1] Univ Birmingham, Sch Met & Mat, Birmingham B15 2TT, W Midlands, England

来源：

MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS | 2015年 / 48卷

基金：

英国工程与自然科学研究理事会;

关键词：

Mg-Zn-Ca; Degradation; Microstructure; Heat treatment; MAGNESIUM ALLOYS; BEHAVIOR;

D O I：

10.1016/j.msec.2014.12.049

中图分类号：

TB3 [工程材料学]; R318.08 [生物材料学];

学科分类号：

0805 ; 080501 ; 080502 ;

摘要：

The bio-corrosion behaviour of Mg-3Zn-0.3Ca (wt.%) alloy in simulated body fluid (SBF) at 37 degrees C has been investigated using immersion testing and electrochemical measurements. Heat treatment has been used to alter the grain size and secondary phase volume fraction; the effects of these on the bio-corrosion behaviour of the alloy were then determined. The as-cast sample has the highest bio-corrosion rate due to niicro-galvanic corrosion between the eutectic product (Mg + Ca2Mg6Zn3) and the surrounding magnesium matrix. The bio-corrosion resistance of the alloy can be improved by heat treatment. The volume fraction of secondary phases and grain size are both key factors controlling the bio-corrosion rate of the alloy. The bio-corrosion rate increases with volume fraction of secondary phase. When this is lower than 0.8%, the dependence of bio-corrosion rate becomes noticeable: large grains corrode more quickly. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：480 / 486

页数：7

共 27 条

[1] Effects of grain size on the corrosion resistance of wrought magnesium alloys containing neodymium [J].

Argade, G. R. ;

Panigrahi, S. K. ;

Mishra, R. S. .

CORROSION SCIENCE, 2012, 58 :145-151

[2]

Avedesian M.M., 1999, ASM SPECIALTY HDB MA, P17

[3] Relationship between the corrosion behavior and the thermal characteristics and microstructure of Mg-0.5Ca-xZn alloys [J].

Bakhsheshi-Rad, H. R. ;

Abdul-Kadir, M. R. ;

Idris, M. H. ;

Farahany, S. .

CORROSION SCIENCE, 2012, 64 :184-197

[4] Grain character influences on corrosion of ECAPed pure magnesium [J].

Birbilis, N. ;

Ralston, K. D. ;

Virtanen, S. ;

Fraser, H. L. ;

Davies, C. H. J. .

CORROSION ENGINEERING SCIENCE AND TECHNOLOGY, 2010, 45 (03) :224-230

[5] Temporary scaffolding of coronary arteries with bioabsorbable magnesium stents:: a prospective, non-randomised multicentre trial [J].

Erbel, Raimund ;

Di Mario, Carlo ;

Bartunek, Jozef ;

Bonnier, Johann ;

de Bruyne, Bernard ;

Eberli, Franz R. ;

Erne, Paul ;

Haude, Michael ;

Heublein, Bernd ;

Horrigan, Mark ;

Ilsley, Charles ;

Boese, Dirk ;

Koolen, Jacques ;

Luescher, Thomas F. ;

Weissman, Neil ;

Waksman, Ron .

LANCET, 2007, 369 (9576) :1869-1875

[6] Comparative effect of grain size and texture on the corrosion behaviour of commercially pure titanium processed by equal channel angular pressing [J].

Hoseini, Majid ;

Shahryari, Arash ;

Omanovic, Sasha ;

Szpunar, Jerzy A. .

CORROSION SCIENCE, 2009, 51 (12) :3064-3067

[7] Nutrition in bone health revisited: A story beyond calcium [J].

Ilich, JZ ;

Kerstetter, JE .

JOURNAL OF THE AMERICAN COLLEGE OF NUTRITION, 2000, 19 (06) :715-737

[8] Precipitate crystal structure determination in melt spun Mg-1.5wt%Ca-6wt%Zn alloy [J].

Jardim, PM ;

Solórzano, G ;

Vander Sande, JB .

MICROSCOPY AND MICROANALYSIS, 2002, 8 (06) :487-496

[9] How useful is SBF in predicting in vivo bone bioactivity? [J].

Kokubo, T ;

Takadama, H .

BIOMATERIALS, 2006, 27 (15) :2907-2915

[10] Grain size effects on the corrosion behavior of Ni50.5Ti49.5 and Ni45.6Ti49.3Al5.1 films [J].

Liu, K. Ting ;

Duh, J. Gong .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2008, 618 (1-2) :45-52

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