Homogeneous corrosion of high pressure torsion treated Mg-Zn-Ca alloy in simulated body fluid

被引：147

作者：

Gao, J. H. ^{[1
]}

Guan, S. K. ^{[1
]}

Ren, Z. W. ^{[1
]}

Sun, Y. F. ^{[1
,2
]}

Zhu, S. J. ^{[1
]}

Wang, B. ^{[1
]}

机构：

[1] Zhengzhou Univ, Sch Mat Sci & Engn, Zhenzhou 450002, Peoples R China

[2] Osaka Univ, Div Mat & Mfg Sci, Osaka 5670047, Japan

来源：

MATERIALS LETTERS | 2011年 / 65卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Mg-Zn-Ca alloy; High pressure torsion; Corrosion; Microstructure; Simulated body fluid; PURE MAGNESIUM; DEGRADATION; SBF;

D O I：

10.1016/j.matlet.2010.11.015

中图分类号：

T [工业技术];

学科分类号：

120111 [工业工程];

摘要：

Magnesium alloys have got extensive attention as biodegradable implant materials due to their biodegradability in the physiological environment and similar elastic modulus to natural bone. But their poor corrosion resistance is a dominant problem that limits their clinical application due to the inhomogeneous distribution of the second phase. Nevertheless, after high pressure torsion (HPT) treatment, the second phase became nano-sized particles and distributed uniformly in grain interiors instead of along grain boundaries. The immersion tests indicated that the HPT-treated sample exhibited homogeneous corrosion resulting from the uniform distribution of the second phase. The results of the potentiodynamic polarization experiments showed that, compared with the as-cast alloy, the corrosion current density of the HPT-treated alloy decreased from 5.3 x 10(-4) A/cm(2) to 3.3 x 10(-6) A/cm(2). (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：691 / 693

页数：3

共 10 条

[1]

Dynamic degradation behavior of MgZn alloy in circulating m-SBF [J].

Chen, Ying ;

Zhang, Shaoxiang ;

Li, Jianan ;

Song, Yang ;

Zhao, Changli ;

Zhang, Xiaonong .

MATERIALS LETTERS, 2010, 64 (18) :1996-1999

[2]

Degradation and cytotoxicity of lotus-type porous pure magnesium as potential tissue engineering scaffold material [J].

Gu, X. N. ;

Zhou, W. R. ;

Zheng, Y. F. ;

Liu, Y. ;

Li, Y. X. .

MATERIALS LETTERS, 2010, 64 (17) :1871-1874

[3]

High-pressure torsion using ring specimens [J].

Harai, Yosuke ;

Ito, Yuki ;

Horita, Zenji .

SCRIPTA MATERIALIA, 2008, 58 (06) :469-472

[4]

Developing grain refinement and superplasticity in a magnesium alloy processed by high-pressure torsion [J].

Kai, Masaaki ;

Horita, Zenji ;

Langdon, Terence G. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 488 (1-2) :117-124

[5]

In vitro degradation and mechanical integrity of calcium-containing magnesium alloys in modified-simulated body fluid [J].

Kannan, M. Bobby ;

Raman, R. K. Singh .

BIOMATERIALS, 2008, 29 (15) :2306-2314

[6]

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

Kokubo, T ;

Takadama, H .

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

[7]

Formation of nanograined structure and decomposition of supersaturated solid solution during high pressure torsion of Al-Zn and Al-Mg alloys [J].

Straumal, BB ;

Baretzky, B ;

Mazilkin, AA ;

Phillipp, F ;

Kogtenkova, OA ;

Volkov, MN ;

Valiev, RZ .

ACTA MATERIALIA, 2004, 52 (15) :4469-4478

[8]

Corrosion process of pure magnesium in simulated body fluid [J].

Wang, Yong ;

Wei, Mei ;

Gao, Jiacheng ;

Hu, Jinzhu ;

Zhang, Yan .

MATERIALS LETTERS, 2008, 62 (14) :2181-2184

[9]

Corrosion behaviors of Mg and its alloys with different Al contents in a modified simulated body fluid [J].

Wen, Zhaohui ;

Wu, Changjun ;

Dai, Changsong ;

Yang, Feixia .

JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 488 (01) :392-399

[10]

Influence of the β-phase morphology on the corrosion of the Mg alloy AZ91 [J].

Zhao, Ming-Chun ;

Liu, Ming ;

Song, Guangling ;

Atrens, Andrej .

CORROSION SCIENCE, 2008, 50 (07) :1939-1953

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