Rapid degradation of biomedical magnesium induced by zinc ion implantation

Guosong Wu; Li Gong; Kai Feng; Shuilin Wu; Ying Zhao; Paul K. Chu

doi:10.1016/j.matlet.2010.11.059

Rapid degradation of biomedical magnesium induced by zinc ion implantation

Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review

Overview

52 Scopus Citations

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Author(s)

Guosong Wu
Li Gong
Kai Feng
Shuilin Wu
Ying Zhao

Detail(s)

Original language	English
Pages (from-to)	661-663
Journal / Publication	Materials Letters
Volume	65
Issue number	4
Online published	29 Nov 2010
Publication status	Published - 28 Feb 2011

Link(s)

DOI	DOI https://doi.org/10.1016/j.matlet.2010.11.059 Final Published version
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Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-78650461224&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(cb854d40-8e39-470c-80f1-79b4196b469c).html

Abstract

The degradation rate is important to biodegradable magnesium materials. In this study, Zn is implanted using a cathodic arc source into pure magnesium at an accelerating voltage of 35 kV. The nominal ion implant fluence is 2.5 × 10¹⁷ ions cm^-2. After Zn implantation, the degradation rate in simulated body fluids is increased significantly. It is postulated that because Zn exists in the metallic state in the implanted layer, the galvanic effect between the Zn rich surface region and magnesium matrix induces the observed accelerated degradation. © 2010 Elsevier B.V.