Title: MICROSTRUCTURE AND CORROSION RESISTANCE OF WATERBORNE Al-Zn-Si ALLOY COATING
Abstract: A kind of anti-corrosive paint consisted of epoxy silane and lamellar Al-Zn-Si alloy particles was introduced in this paper.Corrosion properties of waterborne Al-Zn-Si alloy coating were tested through salt water immersion method,electrochemical method.Furthermore,the microstructure,corrosion products of the coating were detected by means of SEM,EDS and XRD.The experimental results showed that Al-Zn-Si alloy particles dispersed in coating in the form of flake structure which formed a more effective physical shield, extending the path of the corrosive medium to body;furthermore,in the corrosion processes corrosion product film formed which filled in pores of the coating and had good shielding property;Tafel curves indicated that Al-Zn-Si alloy was a good sacrificial anode material of aluminum.In addition,anti-corrosive mechanism of Al-Zn-Si alloy coating was analyzed which possessed excellent cathodic protection,and its excellent corrosion resistance was related to lamellar Al-Zn-Si alloy powder which had lower dissolution rate,inhibited the corrosion of the coating and prolonged the duration of cathodic protection.
Publication Year: 2012
Publication Date: 2012-01-01
Language: en
Type: article
Access and Citation
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot