Microstructure, corrosion behavior and cytotoxicity of Zr-Nb alloys for   biomedical application

doi:10.1016/j.msec.2012.02.002

CORC > 北京大学 > 工学院

	Microstructure, corrosion behavior and cytotoxicity of Zr-Nb alloys for biomedical application
	Zhou, F. Y. ; Wang, B. L. ; Qiu, K. J. ; Lin, W. J. ; Li, L. ; Wang, Y. B. ; Nie, F. L. ; Zheng, Y. F.
刊名	materials science engineering c materials for biological applications
	2012
关键词	Zr-Nb alloys Microstructure Corrosion resistance Surface Cytotoxicity ZIRCONIUM-BASED ALLOYS BIOCOMPATIBLE ALLOYS PITTING CORROSION OXIDE-FILM TITANIUM XPS RESISTANCE INTERFACE STABILITY OXIDATION
DOI	10.1016/j.msec.2012.02.002
英文摘要	In this work, the effects of Nb content on microstructure and corrosion behaviors of biomedical Zr-Nb alloys were systematically studied. The results of XRD analysis and optical microscopy indicated that the experimental Zr-Nb alloys had a duplex structure of alpha and beta phases, and the content of beta phase increased with the increase of Nb content. The electrochemical impedance spectroscopy (EIS) studies showed an improvement on the resistance of the spontaneous oxide film with increasing Nb content. The EIS data, fitted by R-s(Q(p)R(p)) model, suggested a single passive film formed on the experimental material surfaces. Polarization tests in Hank's solution revealed a nobler electrochemical behavior of the Zr-Nb alloys after alloying Nb to pure Zr. The corrosion resistance increased with increasing Nb content, as indicated by lower corrosion current densities and passive current densities and higher pitting potentials. The major components on the surfaces of the corroded Zr-Nb alloy samples detected by XPS were ZrO2 and Nb2O5. The biocompatibility of Zr-Nb alloys was primarily evaluated by culturing L-929 cells in the extraction media of Zr-Nb alloy samples and excellent results were obtained. All of these above results suggested that the Zr-22Nb alloy, among the experimental alloys, showed a promising potential for biomedical applications. (c) 2012 Elsevier B.V. All rights reserved.; Materials Science, Biomaterials; SCI(E); EI; 0; ARTICLE; 4; 851-857; 32
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/235352]
专题	工学院
推荐引用方式 GB/T 7714	Zhou, F. Y.,Wang, B. L.,Qiu, K. J.,et al. Microstructure, corrosion behavior and cytotoxicity of Zr-Nb alloys for biomedical application[J]. materials science engineering c materials for biological applications,2012.
APA	Zhou, F. Y..,Wang, B. L..,Qiu, K. J..,Lin, W. J..,Li, L..,...&Zheng, Y. F..(2012).Microstructure, corrosion behavior and cytotoxicity of Zr-Nb alloys for biomedical application.materials science engineering c materials for biological applications.
MLA	Zhou, F. Y.,et al."Microstructure, corrosion behavior and cytotoxicity of Zr-Nb alloys for biomedical application".materials science engineering c materials for biological applications (2012).