{"title":"Greatly improving corrosion resistance of Ti alloy by regulating basketweave microstructure and phase electronic structure","authors":"Chaowen Zheng, Qi Wang, Ruirun Chen, Wei Wei, Xin Ding, Hengzhi Fu","doi":"10.1016/j.corsci.2025.112836","DOIUrl":null,"url":null,"abstract":"<div><div>In this paper, the effects of basketweave structure and phase electronic structure regulation on the corrosion resistance of Ti-0.3Mo-0.8Ni alloy were investigated. With the increasement of the V quality fraction in the alloy, the lath length and orientation of α phases gradually become shorter and more. The microstructure transforms from lamellar structure to basketweave structure, which the content of the β phase and the ratio of β/α phase boundary are increased greatly. With the increasement of V quality fraction, the passivate film becomes denser, thicker and more stable, which is because the increasement of the ratio of α/β phase boundary makes the passivate film easier to form. In addition, the XPS results show that the proportion of TiO<sub>2</sub> and metal oxides in the passivate film increases. The corrosion resistance increases with the addition of V content. Especially, the V quality fraction ≥ 4 wt.%, the corrosion resistance is greatly increased. It is because the V changes the electronic structure of the β and α phase, which reduces the density of electronic states near the Fermi level. Secondly, the content of β phase is greatly increased because of the basketweave structure, which also improves the corrosion resistance.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"249 ","pages":"Article 112836"},"PeriodicalIF":7.4000,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Corrosion Science","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0010938X25001635","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
In this paper, the effects of basketweave structure and phase electronic structure regulation on the corrosion resistance of Ti-0.3Mo-0.8Ni alloy were investigated. With the increasement of the V quality fraction in the alloy, the lath length and orientation of α phases gradually become shorter and more. The microstructure transforms from lamellar structure to basketweave structure, which the content of the β phase and the ratio of β/α phase boundary are increased greatly. With the increasement of V quality fraction, the passivate film becomes denser, thicker and more stable, which is because the increasement of the ratio of α/β phase boundary makes the passivate film easier to form. In addition, the XPS results show that the proportion of TiO2 and metal oxides in the passivate film increases. The corrosion resistance increases with the addition of V content. Especially, the V quality fraction ≥ 4 wt.%, the corrosion resistance is greatly increased. It is because the V changes the electronic structure of the β and α phase, which reduces the density of electronic states near the Fermi level. Secondly, the content of β phase is greatly increased because of the basketweave structure, which also improves the corrosion resistance.
期刊介绍:
Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies.
This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.