Component Design of Environmentally Friendly High-Temperature Resistance Coating for Oriented Silicon Steel and Effects on Anti-Corrosion Property

Oriented silicon steel is vital for power transformer cores, while the high-temperature annealing process limits industrialization of environmentally friendly coatings on surface. In this paper, binders Al(H2PO4)3 solution and silica sol were introduced innovatively. They condensed into macromolecular polymer chains, network structures SiO2 particles at high temperatures, providing stability adhesion. The influence types sol, additives functional fillers corrosion resistance coating was studied. prepared inorganic insulating oriented has excellent after curing 475 °C 800 °C, which matched with currently rolling steel. salt-spray can last more than 24 h up to 72 h.