Bio-corrosion study on zirconium-based bulk-metallic glasses

被引：70

作者：

Huang, Lu ^{[1
,2
]}

Qiao, Dongchun ^{[2
]}

Green, Brandice A. ^{[2
]}

Liaw, Peter K. ^{[2
]}

Wang, Jianfeng ^{[1
]}

Pang, Shujie ^{[1
]}

Zhang, Tao ^{[1
]}

机构：

[1] Beijing Univ Aeronaut & Astronaut, Sch Mat Sci & Engn, Minist Educ, Key Lab Aerosp Mat & Performance, Beijing 100191, Peoples R China

[2] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA

来源：

INTERMETALLICS | 2009年 / 17卷 / 04期

基金：

美国国家科学基金会;

关键词：

Metallic glasses; Biocompatibility; Electrochemical Characterization; MECHANICAL-PROPERTIES; ANODIC-POLARIZATION; PITTING CORROSION; FATIGUE BEHAVIOR; ALLOYS; YTTRIUM; TI;

D O I：

10.1016/j.intermet.2008.07.020

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Bio-corrosion behaviors of Zr55Al10Cu30Ni5 and (Zr55Al10Cu30Ni5)(99)Y-1 (at.%) BMGS in a physiologically relevant environment were investigated and compared to those of standard, crystalline biomaterials. The effect of I at.% yttrium addition on the corrosion resistance of the Zr55Al10Cu30Ni5 BMG was determined. Cyclic-anodic polarization tests were performed at 37 degrees C in a phosphate-buffered saline (PBS) electrolyte aerated with a 4 vol.%O-2/N-2 gas mixture. Surface morphologies after electrochemical studies were observed by the scanning-electron microscopy (SEM). Compositions of corrosion products were investigated by the energy dispersive X-ray (EDX) to identify the corrosion mechanism. It was found that (Zr55Al10Cu30Ni5)(99)Y-1 BMGs exhibited a superior bio-corrosion resistance with a corrosion-penetration rate (CPR) comparable to those standard, crystalline biomaterials, while Zr55Al10Cu30Ni5 BMGs exhibited a lower bio-corrosion resistance. Possible mechanisms for the beneficial effect of the Y addition are proposed that the structure of the passive film was changed, and/or the formation of the passive film was accelerated. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：195 / 199

页数：5

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