Jie Pan , Ya-jing Ding , Rui-cheng Zhao , Jian Zhang , Yan Li
{"title":"不同量壳聚糖改性锆基转化涂层在热镀锌铝合金钢板上的应用","authors":"Jie Pan , Ya-jing Ding , Rui-cheng Zhao , Jian Zhang , Yan Li","doi":"10.1016/j.corcom.2023.01.004","DOIUrl":null,"url":null,"abstract":"<div><p>Chitosan (CTS) as an environment-friendly biological macromolecule was applied to investigate its effect in improving the property of zirconium-based Cr(III) conversion coating on Zn-55Al-1.6Si coated steel sheet (Zn55Al). High-resolution transmission electron microscope gave the key evidence that CTS can effectively wrap the main film-forming substances and participate in the construction of Zr@CTS-TCC. A comparative analysis of electrochemical measurements showed that the addition of 0.2 g·L<sup>–1</sup> CTS can improve the corrosion resistance of Zr@CTS-TCC and decrease the surface density of micro defects. Surface spectroscopy characterization provided a theoretical explanation for the role of CTS as an electron supplier in reduction of Cr(VI). Results demonstrate the potential of CTS as an environmentally friendly and effective cross-linking additive, which provides an alternative approach in developing next generation of trivalent chromium or chromium-free passivator for nonferrous alloy and their coatings.</p></div>","PeriodicalId":100337,"journal":{"name":"Corrosion Communications","volume":"12 ","pages":"Pages 1-10"},"PeriodicalIF":0.0000,"publicationDate":"2023-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Zirconium-based conversion coating modified by different amount of chitosan on hot-dip Zn-Al alloy coated steel sheet\",\"authors\":\"Jie Pan , Ya-jing Ding , Rui-cheng Zhao , Jian Zhang , Yan Li\",\"doi\":\"10.1016/j.corcom.2023.01.004\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Chitosan (CTS) as an environment-friendly biological macromolecule was applied to investigate its effect in improving the property of zirconium-based Cr(III) conversion coating on Zn-55Al-1.6Si coated steel sheet (Zn55Al). High-resolution transmission electron microscope gave the key evidence that CTS can effectively wrap the main film-forming substances and participate in the construction of Zr@CTS-TCC. A comparative analysis of electrochemical measurements showed that the addition of 0.2 g·L<sup>–1</sup> CTS can improve the corrosion resistance of Zr@CTS-TCC and decrease the surface density of micro defects. Surface spectroscopy characterization provided a theoretical explanation for the role of CTS as an electron supplier in reduction of Cr(VI). Results demonstrate the potential of CTS as an environmentally friendly and effective cross-linking additive, which provides an alternative approach in developing next generation of trivalent chromium or chromium-free passivator for nonferrous alloy and their coatings.</p></div>\",\"PeriodicalId\":100337,\"journal\":{\"name\":\"Corrosion Communications\",\"volume\":\"12 \",\"pages\":\"Pages 1-10\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2023-09-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Corrosion Communications\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S266726692300035X\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Corrosion Communications","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S266726692300035X","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Zirconium-based conversion coating modified by different amount of chitosan on hot-dip Zn-Al alloy coated steel sheet
Chitosan (CTS) as an environment-friendly biological macromolecule was applied to investigate its effect in improving the property of zirconium-based Cr(III) conversion coating on Zn-55Al-1.6Si coated steel sheet (Zn55Al). High-resolution transmission electron microscope gave the key evidence that CTS can effectively wrap the main film-forming substances and participate in the construction of Zr@CTS-TCC. A comparative analysis of electrochemical measurements showed that the addition of 0.2 g·L–1 CTS can improve the corrosion resistance of Zr@CTS-TCC and decrease the surface density of micro defects. Surface spectroscopy characterization provided a theoretical explanation for the role of CTS as an electron supplier in reduction of Cr(VI). Results demonstrate the potential of CTS as an environmentally friendly and effective cross-linking additive, which provides an alternative approach in developing next generation of trivalent chromium or chromium-free passivator for nonferrous alloy and their coatings.
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