Chuangchuang Zhang, Songmei Li, Jian Xiao, Rong Wang, Xiaoyun Xu, Jianhua Liu, Mei Yu
{"title":"通过锌粉的双重屏蔽效应增强有机硅涂层的耐热性和耐腐蚀性","authors":"Chuangchuang Zhang, Songmei Li, Jian Xiao, Rong Wang, Xiaoyun Xu, Jianhua Liu, Mei Yu","doi":"10.1016/j.electacta.2024.145329","DOIUrl":null,"url":null,"abstract":"<div><div>Organic silicone coatings added with varying Zn content were developed to enhance heat and corrosion resistance in different corrosive environments. Zn was revealed to affect the adhesion strength between the coating and the substrate, and the 40% Zn-added coating demonstrated the best heat and corrosion resistance. In high-temperature environments, the volume expansion and melting deformation of Zn filled the defects of the coating and enhanced the physical shielding effect of the coating. In ambient-temperature environments, Zn provided the chemical shielding effect to the steel substrate by acting as an anode and providing cathodic protection. In high temperature-salt spray cyclic environments, the ambient-temperature corrosion products of Zn also filled the defects of the coating and enhanced the heat resistance in the high-temperature stage. ZnO generated at high temperatures preferentially adsorbed corrosive mediums in the ambient-temperature stage, hindering their diffusion to the substrate, thereby simultaneously enhancing the heat and corrosion resistance of the coating.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"509 ","pages":"Article 145329"},"PeriodicalIF":5.5000,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Enhanced heat and corrosion resistance of organic silicone coatings by dual shielding effects of Zn powder\",\"authors\":\"Chuangchuang Zhang, Songmei Li, Jian Xiao, Rong Wang, Xiaoyun Xu, Jianhua Liu, Mei Yu\",\"doi\":\"10.1016/j.electacta.2024.145329\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Organic silicone coatings added with varying Zn content were developed to enhance heat and corrosion resistance in different corrosive environments. Zn was revealed to affect the adhesion strength between the coating and the substrate, and the 40% Zn-added coating demonstrated the best heat and corrosion resistance. In high-temperature environments, the volume expansion and melting deformation of Zn filled the defects of the coating and enhanced the physical shielding effect of the coating. In ambient-temperature environments, Zn provided the chemical shielding effect to the steel substrate by acting as an anode and providing cathodic protection. In high temperature-salt spray cyclic environments, the ambient-temperature corrosion products of Zn also filled the defects of the coating and enhanced the heat resistance in the high-temperature stage. ZnO generated at high temperatures preferentially adsorbed corrosive mediums in the ambient-temperature stage, hindering their diffusion to the substrate, thereby simultaneously enhancing the heat and corrosion resistance of the coating.</div></div>\",\"PeriodicalId\":305,\"journal\":{\"name\":\"Electrochimica Acta\",\"volume\":\"509 \",\"pages\":\"Article 145329\"},\"PeriodicalIF\":5.5000,\"publicationDate\":\"2024-11-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Electrochimica Acta\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0013468624015652\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ELECTROCHEMISTRY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Electrochimica Acta","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0013468624015652","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ELECTROCHEMISTRY","Score":null,"Total":0}
Enhanced heat and corrosion resistance of organic silicone coatings by dual shielding effects of Zn powder
Organic silicone coatings added with varying Zn content were developed to enhance heat and corrosion resistance in different corrosive environments. Zn was revealed to affect the adhesion strength between the coating and the substrate, and the 40% Zn-added coating demonstrated the best heat and corrosion resistance. In high-temperature environments, the volume expansion and melting deformation of Zn filled the defects of the coating and enhanced the physical shielding effect of the coating. In ambient-temperature environments, Zn provided the chemical shielding effect to the steel substrate by acting as an anode and providing cathodic protection. In high temperature-salt spray cyclic environments, the ambient-temperature corrosion products of Zn also filled the defects of the coating and enhanced the heat resistance in the high-temperature stage. ZnO generated at high temperatures preferentially adsorbed corrosive mediums in the ambient-temperature stage, hindering their diffusion to the substrate, thereby simultaneously enhancing the heat and corrosion resistance of the coating.
期刊介绍:
Electrochimica Acta is an international journal. It is intended for the publication of both original work and reviews in the field of electrochemistry. Electrochemistry should be interpreted to mean any of the research fields covered by the Divisions of the International Society of Electrochemistry listed below, as well as emerging scientific domains covered by ISE New Topics Committee.