Electrochemical properties and corrosion induced mechanical degradation of biomedical Zn–Cu–Li alloy in simulated body fluid

Shiyu Huang; Jiabing Liu; Lie Wen; Wei Wu; Xiaocheng Zhou; Na Guo; Tao Liu; Yu Yan; Lijie Qiao

Materials & Design (Aug 2024)

Electrochemical properties and corrosion induced mechanical degradation of biomedical Zn–Cu–Li alloy in simulated body fluid

Shiyu Huang,
Jiabing Liu,
Lie Wen,
Wei Wu,
Xiaocheng Zhou,
Na Guo,
Tao Liu,
Yu Yan,
Lijie Qiao

Affiliations

Shiyu Huang: College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China; Beijing Advanced Innovation Center for Materials Genome Engineering, Corrosion and Protection Center, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China
Jiabing Liu: College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
Lie Wen: College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
Wei Wu: Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, Shanghai University of Electric Power, Shanghai 200090, China; Corresponding authors.
Xiaocheng Zhou: Jiangsu Key Laboratory of Construction Materials, School of Materials Science and Engineering, Southeast University, Nanjing 211189, China
Na Guo: College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
Tao Liu: College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China; Corresponding authors.
Yu Yan: Beijing Advanced Innovation Center for Materials Genome Engineering, Corrosion and Protection Center, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China
Lijie Qiao: Beijing Advanced Innovation Center for Materials Genome Engineering, Corrosion and Protection Center, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China

Journal volume & issue: Vol. 244
p. 113161

Abstract

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The electrochemical behavior and corrosion induced mechanical degradation of biodegradable Zn–2Cu–0.03Li alloy were in detail investigated. The results indicated that the corrosion product film presented an increasing corrosion resistance, while the localized corrosion induced by microgalvanic effect was intensified. Corrosion pits, as the typical defect, acted as the crack initiation sites and accelerated the fracture process of the Zn–2Cu–0.03Li alloy. Accordingly, the fracture mode transformed from ductile to brittle failure. Significant loss in ultimate tensile strength and elongation of the alloys occurred due to strong stress concentration at corrosion pit, threatening the mechanical reliability after implantation.

Published in Materials & Design

ISSN: 0264-1275 (Print); 1873-4197 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.journals.elsevier.com/materials-and-design

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