硬脂酸处理提高镁合金表面碳酸钙涂层的耐蚀性

IF 15.8 1区材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING

Journal of Magnesium and Alloys Pub Date : 2025-03-27 DOI:10.1016/j.jma.2025.02.022

Tianxiao Wang, Panpan Li, Yunting Guo, Yingchao Xu, Wen Kou, Guangyu Li, Jianshe Lian

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引用次数: 0

摘要

镁合金是一种很有前途的可降解硬组织工程金属材料。但其高腐蚀速率限制了其应用。在我们之前的研究中，我们利用硅氧烷感应在镁合金表面模拟沉积了碳酸钙涂层。该碳酸钙涂层表现出良好的体外生物相容性，并对镁合金基体提供部分保护。在本研究中，我们通过硬脂酸及其衍生物硬脂酸钠对碳酸钙涂层进行处理，进一步提高了其耐腐蚀性。电化学腐蚀试验表明，经硬脂酸钠处理的碳酸钙涂层的腐蚀速率降低了两个数量级。此外，体外生物相容性评估表明，虽然硬脂酸钠处理的涂层的生物相容性略有降低，但与镁底物相比，它仍然是可接受的。本研究建立在我们之前工作的基础上，为可降解镁合金的医疗应用提供了一种有前途的强化策略。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Enhanced corrosion resistance of calcium carbonate coatings on magnesium alloy via simple stearic acid treatment

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Enhanced corrosion resistance of calcium carbonate coatings on magnesium alloy via simple stearic acid treatment

Magnesium alloy is a promising biodegradable metal material for hard tissue engineering. However, its high corrosion rate limits its application. In our previous study, we biomimetically deposited a calcium carbonate coating on the surface of magnesium alloy using siloxane induction. This calcium carbonate coating demonstrated excellent in vitro biocompatibility and provided partial protection for the magnesium alloy substrate. In this study, we further enhanced the corrosion resistance of the calcium carbonate coating by treating it with stearic acid and its derivative, sodium stearate. Electrochemical corrosion tests revealed that the sodium stearate-treated calcium carbonate coating reduced the corrosion rate by two orders of magnitude. Additionally, in vitro biocompatibility assessments showed that while the biocompatibility of the sodium stearate-treated coating was slightly reduced, it remained acceptable compared to the magnesium substrate. This study builds on our previous work and offers a promising reinforcement strategy for degradable magnesium alloys in medical applications.

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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.