The electrochemical corrosion behavior and antibacterial properties of Cu-xFe alloy

IF 6.2 2区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Journal of Materials Research and Technology-Jmr&t Pub Date : 2024-09-11 DOI:10.1016/j.jmrt.2024.09.066
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Abstract

Copper-based alloys have garnered significant attention for their potential in antimicrobial applications aimed at mitigating medical-related infections. Nonetheless, the alloying elements in conventional copper alloys frequently exhibit biotoxicity. This study explored the corrosion behavior, antimicrobial activity, and ion release of Cu–Fe alloys with varying iron contents and aging treatment. The results indicate that increasing the iron content in Cu–Fe alloys and applying appropriate aging treatment can enhance both the antibacterial efficiency and corrosion rate. Transmission electron microscopy (TEM) observations revealed a corrosion mechanism in which dispersed iron phases act as nucleation sites. These nanoscale precipitates increase the Cu/Fe interfacial area, thereby promoting ion release at the interface. Furthermore, in-situ scanning electron microscopy (SEM) revealed that corrosion products are more likely to detach in iron-rich segregated areas, which effectively promotes the sustained release of copper ions.

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铜-xFe 合金的电化学腐蚀行为和抗菌性能
铜基合金因其在抗菌应用中的潜力而备受关注,这些抗菌应用旨在减轻与医疗有关的感染。然而,传统铜合金中的合金元素经常表现出生物毒性。本研究探讨了不同铁含量和老化处理的铜铁合金的腐蚀行为、抗菌活性和离子释放。结果表明,增加 Cu-Fe 合金中的铁含量并进行适当的时效处理可提高抗菌效率和腐蚀速率。透射电子显微镜(TEM)观察揭示了一种腐蚀机制,其中分散的铁相是成核点。这些纳米级沉淀物增加了铜/铁界面面积,从而促进了界面上的离子释放。此外,原位扫描电子显微镜(SEM)显示,腐蚀产物更容易在富含铁的偏析区域脱离,从而有效地促进了铜离子的持续释放。
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来源期刊
Journal of Materials Research and Technology-Jmr&t
Journal of Materials Research and Technology-Jmr&t Materials Science-Metals and Alloys
CiteScore
8.80
自引率
9.40%
发文量
1877
审稿时长
35 days
期刊介绍: The Journal of Materials Research and Technology is a publication of ABM - Brazilian Metallurgical, Materials and Mining Association - and publishes four issues per year also with a free version online (www.jmrt.com.br). The journal provides an international medium for the publication of theoretical and experimental studies related to Metallurgy, Materials and Minerals research and technology. Appropriate submissions to the Journal of Materials Research and Technology should include scientific and/or engineering factors which affect processes and products in the Metallurgy, Materials and Mining areas.
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