Journal article
Enhancing degradation and corrosion resistance of AZ31 magnesium alloy through hydrophobic coating
Materials chemistry and physics, Vol.225, pp.426-432
03/01/2019
Handle:
https://hdl.handle.net/2376/120901
Abstract
AZ31 magnesium alloy is a promising implant metallic material for the process of healing hard tissue in the human body. However, it is susceptible to degradation when exposed to physiological fluid. To address this issue, we modified the surface of AZ31 to enhance its degradation resistance and corrosion resistance. The surface modification involved hydrothermal treatment, immersion into oleic acid, and subsequent heat treatment. When the alloy experienced hydrothermal treatment and immersion into oleic acid, it showed Mg(OH)2 phase and slight hydrophobicity. There were both Mg(OH)2 and MgO in the alloy experienced only hydrothermal treatment and in the alloy experienced hydrothermal treatment + immersion into oleic acid + subsequent heat treatment. The surface modification process significantly enhanced both degradation resistance and corrosion resistance of the AZ31 magnesium alloy.
•Modified AZ31 surface drastically increases its degradation resistance.•Subsequent heat treatment further improves the corrosion resistance.•Coating produced by in-situ conversion has strong adhesion to the substrate.
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Details
- Title
- Enhancing degradation and corrosion resistance of AZ31 magnesium alloy through hydrophobic coating
- Creators
- Chin-shih Hsu - School of Mechanical and Materials Engineering, Washington State University, Pullman, WA, 99164, USAMehdi Honarvar Nazari - Laboratory of Corrosion Science and Electrochemical Engineering, Department of Civil & Environmental Engineering, Washington State University, Pullman, WA, 99164, USAQizhen Li - School of Mechanical and Materials Engineering, Washington State University, Pullman, WA, 99164, USAXianming Shi - Laboratory of Corrosion Science and Electrochemical Engineering, Department of Civil & Environmental Engineering, Washington State University, Pullman, WA, 99164, USA
- Publication Details
- Materials chemistry and physics, Vol.225, pp.426-432
- Academic Unit
- Civil and Environmental Engineering, Department of
- Publisher
- Elsevier B.V
- Identifiers
- 99900612704601842
- Language
- English
- Resource Type
- Journal article