Corrosion fatigue of as-extruded Mg-xGa alloys in simulated bodily fluids with various glucose contents

IF 3.3 2区医学 Q2 ENGINEERING, BIOMEDICAL Journal of the Mechanical Behavior of Biomedical Materials Pub Date : 2024-12-16 DOI:10.1016/j.jmbbm.2024.106866

Jiebin Zou , Jia Ma , Ziyue Zhang , Lingxiong Sun , Mohammed R.I. Abueida , Song Zhang , Xiaopeng Lu , Yan Li , Hongyan Tang , Qiang Wang

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Abstract

The medical devices are subjected to dynamic loads and surrounding physiological condition of the bodily fluids, which will impact the degradation behavior of magnesium (Mg) alloy implants. In this work, the corrosion fatigue (CF) and corrosion behaviors of Mg-xGa (x = 1, 1.5, and 2 wt%) alloys in Hank's balanced salt solutions (HBSS) with 1 g/L and 3 g/L glucose are thoroughly studied. It is concluded that Mg-2Ga alloy exhibits excellent mechanical and fatigue behaviors. Its ultimate tensile strength (UTS) is 234 MPa, yield strength (YS) is 145 MPa, elongation (EL) is 15%, fatigue limits (σ_f) is 111 MPa in air, 48 MPa in HBSS with 1 g/L glucose, and 66 MPa in HBSS with 3 g/L glucose. The high glucose content in simulated bodily fluids has the function of inhibiting the corrosion reaction of alloy which is favorable to CF.

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挤压态Mg-xGa合金在不同葡萄糖含量的模拟体液中的腐蚀疲劳

医疗器械受到动态载荷和周围体液生理条件的影响，这将影响镁合金植入物的降解行为。本文研究了Mg-xGa （x = 1、1.5和2 wt%）合金在含1 g/L和3 g/L葡萄糖的汉克平衡盐溶液（HBSS）中的腐蚀疲劳（CF）和腐蚀行为。结果表明，Mg-2Ga合金具有良好的力学性能和疲劳性能。其极限抗拉强度（UTS）为234 MPa，屈服强度（YS）为145 MPa，伸长率（EL）为15%，在空气中疲劳极限（σf）为111 MPa，在含1 g/L葡萄糖的HBSS中疲劳极限为48 MPa，在含3 g/L葡萄糖的HBSS中疲劳极限为66 MPa。模拟体液中葡萄糖含量高，具有抑制合金腐蚀反应的作用，有利于CF的产生。

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来源期刊

Journal of the Mechanical Behavior of Biomedical Materials 工程技术-材料科学：生物材料

CiteScore

7.20

自引率

7.70%

发文量

505

审稿时长

46 days

期刊介绍： The Journal of the Mechanical Behavior of Biomedical Materials is concerned with the mechanical deformation, damage and failure under applied forces, of biological material (at the tissue, cellular and molecular levels) and of biomaterials, i.e. those materials which are designed to mimic or replace biological materials. The primary focus of the journal is the synthesis of materials science, biology, and medical and dental science. Reports of fundamental scientific investigations are welcome, as are articles concerned with the practical application of materials in medical devices. Both experimental and theoretical work is of interest; theoretical papers will normally include comparison of predictions with experimental data, though we recognize that this may not always be appropriate. The journal also publishes technical notes concerned with emerging experimental or theoretical techniques, letters to the editor and, by invitation, review articles and papers describing existing techniques for the benefit of an interdisciplinary readership.