{"title":"Ti/Zr/低聚环氧硅烷复合化学转化涂层对多种金属的腐蚀演化行为","authors":"Yunhu Ding, Yingpeng Li, Hongfang Liu, Wenhao Wang, Yijun Wei, Haitao Duan, Wen Zhan","doi":"10.1007/s40195-025-01842-0","DOIUrl":null,"url":null,"abstract":"<div><p>The new energy vehicle body composed of multi-metals requires a synchronous chemical conversion coating to exhibit excellent corrosion resistance. Herein, we prepared a titanium/zirconium/water-based oligomeric epoxy silane composite chemical conversion coating on multi-metals, and conducted an investigation into its electrochemical behavior and micro-zone structural characteristics upon immersion in a 3.5% NaCl solution. The electrochemical results combined with characterization results revealed that the corrosion evolution characteristics of the composite coatings could be categorized into three stages of mild corrosion, synergistic protection, and substrate damage. Besides, Si–OH groups interact with Me–OH at the defect on the multi-metal surface to form an organic monolayer coating. This organic monolayer coating, in conjunction with the synergistic inorganic conversion layer comprising Al<sub>2</sub>O<sub>3</sub>, TiO<sub>2</sub>·2H<sub>2</sub>O, ZrO<sub>2</sub>·2H<sub>2</sub>O, effectively cooperates with the corrosion products to hinder the erosion by the corrosive medium and suppresses the progression of the anodic reaction.</p></div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"38 6","pages":"889 - 903"},"PeriodicalIF":3.9000,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Corrosion Evolution Behavior of Ti/Zr/Oligomeric Epoxy Silane Composite Chemical Conversion Coatings on Multi-metals\",\"authors\":\"Yunhu Ding, Yingpeng Li, Hongfang Liu, Wenhao Wang, Yijun Wei, Haitao Duan, Wen Zhan\",\"doi\":\"10.1007/s40195-025-01842-0\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The new energy vehicle body composed of multi-metals requires a synchronous chemical conversion coating to exhibit excellent corrosion resistance. Herein, we prepared a titanium/zirconium/water-based oligomeric epoxy silane composite chemical conversion coating on multi-metals, and conducted an investigation into its electrochemical behavior and micro-zone structural characteristics upon immersion in a 3.5% NaCl solution. The electrochemical results combined with characterization results revealed that the corrosion evolution characteristics of the composite coatings could be categorized into three stages of mild corrosion, synergistic protection, and substrate damage. Besides, Si–OH groups interact with Me–OH at the defect on the multi-metal surface to form an organic monolayer coating. This organic monolayer coating, in conjunction with the synergistic inorganic conversion layer comprising Al<sub>2</sub>O<sub>3</sub>, TiO<sub>2</sub>·2H<sub>2</sub>O, ZrO<sub>2</sub>·2H<sub>2</sub>O, effectively cooperates with the corrosion products to hinder the erosion by the corrosive medium and suppresses the progression of the anodic reaction.</p></div>\",\"PeriodicalId\":457,\"journal\":{\"name\":\"Acta Metallurgica Sinica-English Letters\",\"volume\":\"38 6\",\"pages\":\"889 - 903\"},\"PeriodicalIF\":3.9000,\"publicationDate\":\"2025-03-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Acta Metallurgica Sinica-English Letters\",\"FirstCategoryId\":\"1\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s40195-025-01842-0\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"METALLURGY & METALLURGICAL ENGINEERING\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acta Metallurgica Sinica-English Letters","FirstCategoryId":"1","ListUrlMain":"https://link.springer.com/article/10.1007/s40195-025-01842-0","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}
Corrosion Evolution Behavior of Ti/Zr/Oligomeric Epoxy Silane Composite Chemical Conversion Coatings on Multi-metals
The new energy vehicle body composed of multi-metals requires a synchronous chemical conversion coating to exhibit excellent corrosion resistance. Herein, we prepared a titanium/zirconium/water-based oligomeric epoxy silane composite chemical conversion coating on multi-metals, and conducted an investigation into its electrochemical behavior and micro-zone structural characteristics upon immersion in a 3.5% NaCl solution. The electrochemical results combined with characterization results revealed that the corrosion evolution characteristics of the composite coatings could be categorized into three stages of mild corrosion, synergistic protection, and substrate damage. Besides, Si–OH groups interact with Me–OH at the defect on the multi-metal surface to form an organic monolayer coating. This organic monolayer coating, in conjunction with the synergistic inorganic conversion layer comprising Al2O3, TiO2·2H2O, ZrO2·2H2O, effectively cooperates with the corrosion products to hinder the erosion by the corrosive medium and suppresses the progression of the anodic reaction.
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This international journal presents compact reports of significant, original and timely research reflecting progress in metallurgy, materials science and engineering, including materials physics, physical metallurgy, and process metallurgy.
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