Effect of sintering temperature on the microstructure, corrosion resistance and crack susceptibility of chemically reactive enamel (CRE) coating. (30th March 2020)

• Record Type: Journal Article
• Authors: Yang, Fan; Yan, Dongming; Tang, Fujian; Chen, Genda; Liu, Yi; Chen, Shikun
• Is Part Of: Construction & building materials. Volume 238(2020)
• Publication Date: 2020-03-30
• Subjects: Microstructure -- Corrosion resistance -- Crack susceptibility -- Enamel coating -- Temperature; Building materials -- Periodicals; 624.18
• DOI: 10.1016/j.conbuildmat.2019.117720
• Languages: English
• ISSNs: 0950-0618

Abstract

Highlights: The microstructure of CRE coating is significantly affected by sintering temperature. An extended layer in the interface transition zone between coating and steel bar was observed. A optimized sintering temperature of 750 °C is recognized for CRE-coated steel bar. Abstract: The microstructure, corrosion resistance and crack susceptibility of chemically reactive enamel (CRE) coatings applied on steel bar with different sintering temperatures were investigated in this study. As the sintering temperature increases, the CER coating structure becomes dense, the extent of chemical reactions between coating and steel gradually increases, and the corrosion resistance of CRE-coated rebar becomes higher in both short-term and long-term corrosion tests. Compared with uncoated steel bar, CRE coating can effectively delay the development of steel corrosion. CRE coating sintered at 750 °C shows the lowest crack susceptibility amongst all coatings.