Protein in physiological fluid resists premature fracture of a magnesium alloy: Unique, remarkable and contrasting influences on stress corrosion cracking and corrosion

IF 13.8 1区材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING

Journal of Magnesium and Alloys Pub Date : 2025-09-18 DOI:10.1016/j.jma.2025.08.036

RK Singh Raman, Amal Sibi, Dandapani Vijayshankar, M.J.N.V. Prasad, G. Keerthiga, Solomon Ansah, Saad Al-Saadi, Jafar Albinmousa

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Abstract

Though magnesium (Mg) alloys are highly attractive for their use as biodegradable/temporary implants, they can be critically compromised in such applications due to their susceptibility to corrosion and stress corrosion cracking (SCC) in human body fluid (such as Hanks’ solution). This study investigated the role of additions of bovine serum albumin (BSA) and glucose to Hanks’ solution in SCC of a Mg alloy, ZK60. The study reproducibly demonstrated the novel and unique characteristic of the acutely elliptical shape of the overall fracture surface of alloy subjected to SCC tests, exclusively when BSA was added to the Hanks’ solution, whereas tests in the Hanks’ solution without BSA produced the fracture surface of usual circular shape. Also, the BSA addition to the Hanks’ solution produced contrasting influences on SCC and electrochemical corrosion. The study provides a comprehensive mechanistic explanation for the two phenomena.

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生理液中的蛋白质抵抗镁合金的过早断裂：对应力腐蚀开裂和腐蚀的独特、显著和对比的影响

尽管镁（Mg）合金在用作可生物降解/临时植入物方面非常有吸引力，但由于它们在体液（如Hanks溶液）中容易腐蚀和应力腐蚀开裂（SCC），因此在此类应用中可能受到严重损害。本研究探讨了添加牛血清白蛋白（BSA）和葡萄糖到汉克斯溶液中对镁合金ZK60 SCC的影响。该研究可重复地证明，当汉克斯溶液中只添加BSA时，经受SCC测试的合金的整体断口呈急剧椭圆形，而在汉克斯溶液中不添加BSA的测试产生的断口呈通常的圆形。此外，汉克斯溶液中添加BSA对SCC和电化学腐蚀产生了截然不同的影响。该研究为这两种现象提供了一个全面的机制解释。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Magnesium and Alloys Engineering-Mechanics of Materials

CiteScore

20.20

自引率

14.80%

发文量

审稿时长

59 days

期刊介绍： The Journal of Magnesium and Alloys serves as a global platform for both theoretical and experimental studies in magnesium science and engineering. It welcomes submissions investigating various scientific and engineering factors impacting the metallurgy, processing, microstructure, properties, and applications of magnesium and alloys. The journal covers all aspects of magnesium and alloy research, including raw materials, alloy casting, extrusion and deformation, corrosion and surface treatment, joining and machining, simulation and modeling, microstructure evolution and mechanical properties, new alloy development, magnesium-based composites, bio-materials and energy materials, applications, and recycling.