期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2020
卷号：571
期号：1
DOI：10.1088/1755-1315/571/1/012099
语种：English
出版社：IOP Publishing
摘要：To protect steel from corrosion in the service environments, a chemically bonded phosphate coating was successfully prepared in this study. The coating consists of aluminium dihydrogen phosphate, silica sol, aluminium hydroxide, silica, magnesium. Then, the microstructure and anticorrosion property of the coating were studied. By using XRD and SEM characterization, it is found that a crystalline Newberyite (MgHPO4·3H2O) and amorphous species formed in microstructure of coating matrix. The anticorrosion property was investigated by salt spray test, in which the coating was brushed on the surface of steel substrate in advance. Then, the anticorrosion property was carried out by an electrochemical test. Results indicated that the coating has an excellent effect in protecting steel substrate from corrosion. Because the compositions of the coating are water based, and it does not need any organic solvent, therefore the coating is both green and environmentally friendly.
