{"title":"热浸镀铝钢氧化物-硅烷复合涂层的腐蚀防护研究","authors":"Zhong‐Xia Liu, Lei Shi, Ai‐Yun Jiang, Jian‐Xiu Liu, Bao‐Feng Zhang, Ya‐Jun Zhou, Guo‐Peng Zhang","doi":"10.1002/maco.202414506","DOIUrl":null,"url":null,"abstract":"The hot dip aluminized ASTM 1035 steels (Al‐coated steel) underwent anodic oxidization, and various thicknesses of Al<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub> coating were applied to the surface of the Al‐coated steels (Al–Al<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub>‐coated steel). The corrosion resistance of the Al–Al<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub>‐coated steel was investigated using potentiodynamic tests, electrochemical impedance spectroscopy tests and measurement of galvanic current density in a bimetallic cell. It was found that the anodic oxidation resulted in the formation of a porous Al<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub> coating on the surface of the Al‐coated steel, improving both its corrosion resistance and galvanic corrosion resistance when coupled with carbon fiber reinforced nylon 6 composite (C<jats:sub>f</jats:sub>/PA6). Silane treatment effectively sealed the pores within the Al<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub> coating, resulting in improved corrosion protection for Al–Al<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub>‐coated steel due to the exceptional insulation, impermeability and hydrophobic properties of silane coating. Compared to the Al‐coated steel/carbon fiber reinforced polymer (CFRP) couple and Al–Al<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub>‐coated steel/CFRP couple, stable galvanic current density decreased by approximately 75% and 45%, respectively.","PeriodicalId":18223,"journal":{"name":"Materials and Corrosion","volume":"31 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Corrosion protection investigations of oxide‐silane composite coating on hot dip aluminized steel\",\"authors\":\"Zhong‐Xia Liu, Lei Shi, Ai‐Yun Jiang, Jian‐Xiu Liu, Bao‐Feng Zhang, Ya‐Jun Zhou, Guo‐Peng Zhang\",\"doi\":\"10.1002/maco.202414506\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The hot dip aluminized ASTM 1035 steels (Al‐coated steel) underwent anodic oxidization, and various thicknesses of Al<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub> coating were applied to the surface of the Al‐coated steels (Al–Al<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub>‐coated steel). The corrosion resistance of the Al–Al<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub>‐coated steel was investigated using potentiodynamic tests, electrochemical impedance spectroscopy tests and measurement of galvanic current density in a bimetallic cell. It was found that the anodic oxidation resulted in the formation of a porous Al<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub> coating on the surface of the Al‐coated steel, improving both its corrosion resistance and galvanic corrosion resistance when coupled with carbon fiber reinforced nylon 6 composite (C<jats:sub>f</jats:sub>/PA6). Silane treatment effectively sealed the pores within the Al<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub> coating, resulting in improved corrosion protection for Al–Al<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub>‐coated steel due to the exceptional insulation, impermeability and hydrophobic properties of silane coating. Compared to the Al‐coated steel/carbon fiber reinforced polymer (CFRP) couple and Al–Al<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub>‐coated steel/CFRP couple, stable galvanic current density decreased by approximately 75% and 45%, respectively.\",\"PeriodicalId\":18223,\"journal\":{\"name\":\"Materials and Corrosion\",\"volume\":\"31 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-08-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Materials and Corrosion\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1002/maco.202414506\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials and Corrosion","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1002/maco.202414506","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Corrosion protection investigations of oxide‐silane composite coating on hot dip aluminized steel
The hot dip aluminized ASTM 1035 steels (Al‐coated steel) underwent anodic oxidization, and various thicknesses of Al2O3 coating were applied to the surface of the Al‐coated steels (Al–Al2O3‐coated steel). The corrosion resistance of the Al–Al2O3‐coated steel was investigated using potentiodynamic tests, electrochemical impedance spectroscopy tests and measurement of galvanic current density in a bimetallic cell. It was found that the anodic oxidation resulted in the formation of a porous Al2O3 coating on the surface of the Al‐coated steel, improving both its corrosion resistance and galvanic corrosion resistance when coupled with carbon fiber reinforced nylon 6 composite (Cf/PA6). Silane treatment effectively sealed the pores within the Al2O3 coating, resulting in improved corrosion protection for Al–Al2O3‐coated steel due to the exceptional insulation, impermeability and hydrophobic properties of silane coating. Compared to the Al‐coated steel/carbon fiber reinforced polymer (CFRP) couple and Al–Al2O3‐coated steel/CFRP couple, stable galvanic current density decreased by approximately 75% and 45%, respectively.
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