Corrosion behavior of ZrN/Zr coated biomedical AZ91 magnesium alloy

Yunchang Xin; Chenglong Liu; Kaifu Huo; Guoyi Tang; Xiubo Tian; Paul K. Chu

doi:10.1016/j.surfcoat.2009.02.074

Corrosion behavior of ZrN/Zr coated biomedical AZ91 magnesium alloy

Yunchang Xin
, Chenglong Liu
, Kaifu Huo
, Guoyi Tang
, Xiubo Tian
, Paul K. Chu

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

133 Citations (Scopus)

Abstract

Magnesium alloys are potential materials in biodegradable hard tissue implants. However, their fast degradation rates in a physiological environment constitute the main limitation for their applications. In this work, a ZrN/Zr bilayered coating is deposited on AZ91 magnesium alloy using a filtered cathodic arc deposition system. The ZrN/Zr bilayered structure buffers the serious mismatch between the substrate and ZrN coating thus improving film adhesion. The composition of the coating is evaluated by X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The electrochemical behavior of the coated alloy is systematically studied by means of potentiodynamic polarization test and electrochemical impedance spectroscopy (EIS). Our results disclose that the corrosion resistance of the coated alloy is significantly improved. © 2009.

Original language	English
Pages (from-to)	2554-2557
Journal	Surface and Coatings Technology
Volume	203
Issue number	17-18
DOIs	https://doi.org/10.1016/j.surfcoat.2009.02.074
Publication status	Published - 15 Jun 2009

Research Keywords

Biocompatibility
Biomedical magnesium alloy
Corrosion resistance
Degradation

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10.1016/j.surfcoat.2009.02.074

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title = "Corrosion behavior of ZrN/Zr coated biomedical AZ91 magnesium alloy",

abstract = "Magnesium alloys are potential materials in biodegradable hard tissue implants. However, their fast degradation rates in a physiological environment constitute the main limitation for their applications. In this work, a ZrN/Zr bilayered coating is deposited on AZ91 magnesium alloy using a filtered cathodic arc deposition system. The ZrN/Zr bilayered structure buffers the serious mismatch between the substrate and ZrN coating thus improving film adhesion. The composition of the coating is evaluated by X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The electrochemical behavior of the coated alloy is systematically studied by means of potentiodynamic polarization test and electrochemical impedance spectroscopy (EIS). Our results disclose that the corrosion resistance of the coated alloy is significantly improved. {\textcopyright} 2009.",

keywords = "Biocompatibility, Biomedical magnesium alloy, Corrosion resistance, Degradation",

author = "Yunchang Xin and Chenglong Liu and Kaifu Huo and Guoyi Tang and Xiubo Tian and Chu, \{Paul K.\}",

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TY - JOUR

T1 - Corrosion behavior of ZrN/Zr coated biomedical AZ91 magnesium alloy

AU - Xin, Yunchang

AU - Liu, Chenglong

AU - Huo, Kaifu

AU - Tang, Guoyi

AU - Tian, Xiubo

AU - Chu, Paul K.

PY - 2009/6/15

Y1 - 2009/6/15

N2 - Magnesium alloys are potential materials in biodegradable hard tissue implants. However, their fast degradation rates in a physiological environment constitute the main limitation for their applications. In this work, a ZrN/Zr bilayered coating is deposited on AZ91 magnesium alloy using a filtered cathodic arc deposition system. The ZrN/Zr bilayered structure buffers the serious mismatch between the substrate and ZrN coating thus improving film adhesion. The composition of the coating is evaluated by X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The electrochemical behavior of the coated alloy is systematically studied by means of potentiodynamic polarization test and electrochemical impedance spectroscopy (EIS). Our results disclose that the corrosion resistance of the coated alloy is significantly improved. © 2009.

AB - Magnesium alloys are potential materials in biodegradable hard tissue implants. However, their fast degradation rates in a physiological environment constitute the main limitation for their applications. In this work, a ZrN/Zr bilayered coating is deposited on AZ91 magnesium alloy using a filtered cathodic arc deposition system. The ZrN/Zr bilayered structure buffers the serious mismatch between the substrate and ZrN coating thus improving film adhesion. The composition of the coating is evaluated by X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The electrochemical behavior of the coated alloy is systematically studied by means of potentiodynamic polarization test and electrochemical impedance spectroscopy (EIS). Our results disclose that the corrosion resistance of the coated alloy is significantly improved. © 2009.

KW - Biocompatibility

KW - Biomedical magnesium alloy

KW - Corrosion resistance

KW - Degradation

UR - https://www.scopus.com/pages/publications/67349278559

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-67349278559&origin=recordpage

U2 - 10.1016/j.surfcoat.2009.02.074

DO - 10.1016/j.surfcoat.2009.02.074

M3 - RGC 21 - Publication in refereed journal

SN - 0257-8972

VL - 203

SP - 2554

EP - 2557

JO - Surface and Coatings Technology

JF - Surface and Coatings Technology

IS - 17-18

ER -

Corrosion behavior of ZrN/Zr coated biomedical AZ91 magnesium alloy

Abstract

Research Keywords

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