Solomon-Oshioke Agbedor , Ding Gao , Kaiyang Li , Qian Lei , Aqsa Kanwal , Igbafen Emmanuel Ohiomomo , Shaohua Xing , Jian Hou , Mingxian Sun , Hong Wu
{"title":"含cu纳米晶Ti-Mo-Nb-Ta难熔复合浓缩合金的耐蚀性和力学性能均有显著改善","authors":"Solomon-Oshioke Agbedor , Ding Gao , Kaiyang Li , Qian Lei , Aqsa Kanwal , Igbafen Emmanuel Ohiomomo , Shaohua Xing , Jian Hou , Mingxian Sun , Hong Wu","doi":"10.1016/j.corsci.2025.112737","DOIUrl":null,"url":null,"abstract":"<div><div>Experimental and computational methods were combined to explore the effects of Cu content on the microstructure, mechanical, and corrosion properties of powder metallurgy (P/M) Ti-Mo-Nb-Ta refractory CCAs. Cu addition refines the grains and significantly improves the strength and work hardening rate. The Cu-free alloy suffered pitting corrosion in Mo-rich regions. Cu addition redistributes Mo and reduces matrix susceptibility to pitting. An electro-dissolution mechanism is proposed and the effect of the alloying elements upon the impedance response is explained. The TMNT-C1.0 specimen exhibited the best corrosion resistance of 26.0 × 10<sup>3</sup> Ω•cm<sup>2</sup> and the least corrosion rate of 0.00396 mm/a compared to the Cu-free specimen. New solid solution oxide complexes were discovered, which act as a protective layer on the Cu-containing specimens. DFT calculation reveals that the mixed oxide complex film is more resistant to Clˉ adsorption, potentially inhibiting corrosion more effectively than the stable Mo<sub>2</sub>O<sub>5</sub>/Cl or MoO<sub>3</sub>/Cl at the pit sites.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"246 ","pages":"Article 112737"},"PeriodicalIF":7.4000,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A significant improvement in corrosion resistance and mechanical properties of Cu-containing nanocrystalline Ti-Mo-Nb-Ta refractory complex concentrated alloy\",\"authors\":\"Solomon-Oshioke Agbedor , Ding Gao , Kaiyang Li , Qian Lei , Aqsa Kanwal , Igbafen Emmanuel Ohiomomo , Shaohua Xing , Jian Hou , Mingxian Sun , Hong Wu\",\"doi\":\"10.1016/j.corsci.2025.112737\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Experimental and computational methods were combined to explore the effects of Cu content on the microstructure, mechanical, and corrosion properties of powder metallurgy (P/M) Ti-Mo-Nb-Ta refractory CCAs. Cu addition refines the grains and significantly improves the strength and work hardening rate. The Cu-free alloy suffered pitting corrosion in Mo-rich regions. Cu addition redistributes Mo and reduces matrix susceptibility to pitting. An electro-dissolution mechanism is proposed and the effect of the alloying elements upon the impedance response is explained. The TMNT-C1.0 specimen exhibited the best corrosion resistance of 26.0 × 10<sup>3</sup> Ω•cm<sup>2</sup> and the least corrosion rate of 0.00396 mm/a compared to the Cu-free specimen. New solid solution oxide complexes were discovered, which act as a protective layer on the Cu-containing specimens. DFT calculation reveals that the mixed oxide complex film is more resistant to Clˉ adsorption, potentially inhibiting corrosion more effectively than the stable Mo<sub>2</sub>O<sub>5</sub>/Cl or MoO<sub>3</sub>/Cl at the pit sites.</div></div>\",\"PeriodicalId\":290,\"journal\":{\"name\":\"Corrosion Science\",\"volume\":\"246 \",\"pages\":\"Article 112737\"},\"PeriodicalIF\":7.4000,\"publicationDate\":\"2025-04-15\",\"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/S0010938X25000642\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2025/1/26 0:00:00\",\"PubModel\":\"Epub\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Corrosion Science","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0010938X25000642","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/1/26 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
A significant improvement in corrosion resistance and mechanical properties of Cu-containing nanocrystalline Ti-Mo-Nb-Ta refractory complex concentrated alloy
Experimental and computational methods were combined to explore the effects of Cu content on the microstructure, mechanical, and corrosion properties of powder metallurgy (P/M) Ti-Mo-Nb-Ta refractory CCAs. Cu addition refines the grains and significantly improves the strength and work hardening rate. The Cu-free alloy suffered pitting corrosion in Mo-rich regions. Cu addition redistributes Mo and reduces matrix susceptibility to pitting. An electro-dissolution mechanism is proposed and the effect of the alloying elements upon the impedance response is explained. The TMNT-C1.0 specimen exhibited the best corrosion resistance of 26.0 × 103 Ω•cm2 and the least corrosion rate of 0.00396 mm/a compared to the Cu-free specimen. New solid solution oxide complexes were discovered, which act as a protective layer on the Cu-containing specimens. DFT calculation reveals that the mixed oxide complex film is more resistant to Clˉ adsorption, potentially inhibiting corrosion more effectively than the stable Mo2O5/Cl or MoO3/Cl at the pit sites.
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.
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