Corrosion behavior of titanium composite with bioinspired architectures in a NaCl solution with fluoride content

IF 11 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Rare Metals Pub Date : 2024-12-24 DOI:10.1007/s12598-024-03125-6

Yan-Jin Lu, Huai-Xi Chen, Yu-Jing Liu

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Abstract

A new approach was introduced by combining laser powder bed fusion and hot isostatic pressing processes to create a Ti6Al4V-Ti composite alloy structured similar to nacre, merging Ti6Al4V with pure Ti. Titanium alloys are known to be sensitive to fluoride ions commonly found in dental products like rinses, toothpaste, and mouthwashes, impacting their corrosion resistance. Therefore, the aim of this research is to investigate how fluoride ions affect the corrosion characteristics of the Ti6Al4V-Ti composite and to evaluate the unique dissolution behaviors observed in the Ti6Al4V and pure Ti zones. The findings from electrochemical tests reveal that adding fluoride ions decreases the composite's corrosion resistance, yet fluoride concentrations of 0.01 and 0.05 M still exhibit passive behavior. However, at a fluoride concentration of 0.1 M, there is a significant degradation of the passive film, presenting a porous structure. Additionally, the observation from atomic force microscope demonstrated Ti6Al4V zone shows a preference for dissolution compared to the Ti zone, particularly evident at fluoride ion concentrations of 0.1 M. This study is expected to provide valuable insights to deepen the understanding of Ti6Al4V-Ti composites' suitability for dental applications.

Graphical abstract

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仿生结构钛复合材料在含氟NaCl溶液中的腐蚀行为

采用激光粉末床熔合和热等静压相结合的新方法，将Ti6Al4V与纯Ti熔合，制备出结构类似珍珠石的Ti6Al4V-Ti复合合金。众所周知，钛合金对漱口水、牙膏和漱口水等牙科产品中常见的氟化物离子很敏感，这会影响它们的耐腐蚀性。因此，本研究的目的是研究氟离子如何影响Ti6Al4V-Ti复合材料的腐蚀特性，并评估在Ti6Al4V区和纯Ti区观察到的独特溶解行为。电化学测试结果表明，氟离子的加入降低了复合材料的耐蚀性，但氟浓度为0.01和0.05 M时仍表现出被动行为。但当氟浓度为0.1 M时，钝化膜降解明显，呈现多孔结构。此外，原子力显微镜观察表明，与Ti区相比，Ti6Al4V区更倾向于溶解，特别是在氟离子浓度为0.1 m时，该研究有望为加深对Ti6Al4V-Ti复合材料在牙科应用中的适用性的理解提供有价值的见解。图形抽象

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来源期刊

Rare Metals 工程技术-材料科学：综合

CiteScore

12.10

自引率

12.50%

发文量

2919

审稿时长

2.7 months

期刊介绍： Rare Metals is a monthly peer-reviewed journal published by the Nonferrous Metals Society of China. It serves as a platform for engineers and scientists to communicate and disseminate original research articles in the field of rare metals. The journal focuses on a wide range of topics including metallurgy, processing, and determination of rare metals. Additionally, it showcases the application of rare metals in advanced materials such as superconductors, semiconductors, composites, and ceramics.