Corrosion resistance and antibacterial properties of Ti−3Cu alloy prepared by selective laser melting

IF 4.7 1区材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING Transactions of Nonferrous Metals Society of China Pub Date : 2025-01-01 Epub Date: 2025-01-23 DOI:10.1016/S1003-6326(24)66670-7

Meng-zhen ZHU , Jing-lei MIAO , Xiong-wen ZHOU , Er-lin ZHANG , Zhi-lin LIU , Hai-lin YANG

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Abstract

The corrosion resistance and antibacterial properties of Ti−3Cu alloy prepared by selective laser melting were evaluated using electrochemical experiments and a variety of antibacterial characterization. It is found that the charge transfer resistance of Ti−3Cu alloy was 4.89×10⁵ Ω·cm² which was doubled the data obtained by CP-Ti alloy. The antibacterial rates of Ti−3Cu alloy against S. mutans and P. gingivalis were 45.0% and 54.5%. And the antibacterial rates increased with the prolongation of cultivation time, reaching up to 62.8% and 68.6%, respectively. The in-situ nano Ti₂Cu precipitates were homogeneously distributed in the matrix of the Ti−3Cu alloy, which was the key reason of increasing the corrosion resistance. Additionally, the microscale electric fields between the α-Ti matrix and the Ti₂Cu was responsible for the enhancement of the antibacterial properties.

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选择性激光熔化制备Ti−3Cu合金的耐蚀性和抗菌性能

采用电化学实验和多种抗菌特性对选择性激光熔化法制备的Ti−3Cu合金的耐腐蚀性能和抗菌性能进行了评价。结果表明，Ti−3Cu合金的电荷转移电阻为4.89×105 Ω·cm2，是CP-Ti合金的两倍。Ti−3Cu合金对变形链球菌和牙龈卟啉卟啉链球菌的抑菌率分别为45.0%和54.5%。抗菌率随培养时间的延长而增加，分别达到62.8%和68.6%。原位纳米Ti2Cu析出相均匀分布在Ti−3Cu合金基体中，这是提高合金耐蚀性的关键原因。此外，α-Ti基体与Ti2Cu之间的微尺度电场是抗菌性能增强的原因。

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来源期刊

Transactions of Nonferrous Metals Society of China 工程技术-冶金工程

CiteScore

7.40

自引率

17.80%

发文量

8456

审稿时长

3.6 months

期刊介绍： The Transactions of Nonferrous Metals Society of China (Trans. Nonferrous Met. Soc. China), founded in 1991 and sponsored by The Nonferrous Metals Society of China, is published monthly now and mainly contains reports of original research which reflect the new progresses in the field of nonferrous metals science and technology, including mineral processing, extraction metallurgy, metallic materials and heat treatments, metal working, physical metallurgy, powder metallurgy, with the emphasis on fundamental science. It is the unique preeminent publication in English for scientists, engineers, under/post-graduates on the field of nonferrous metals industry. This journal is covered by many famous abstract/index systems and databases such as SCI Expanded, Ei Compendex Plus, INSPEC, CA, METADEX, AJ and JICST.