Effect of Al_2O_3 on Corrosion Resistance of Silicate Mineral Ceramic Coating
Silicate minerals ceramic coating was prepared on stainless steel by themo-chemical reaction method.Fuxin(A) and Inner Mongolia(B) natural silicate minerals were used,to contrast the influence of corrossion resistance of Al2O3.The phase structure was analyzed by XRD,and its corrosion resistance was studied.The results indicate that A coating is made of CaSiO3,AlPO4 new phases to aggregate.B coating is made of FeNi3,AlNi3,Al75Ni10Fe15,Cr2O3 new phases.The resistances of A coating to acid and salt corrosion relative to the matrix increase 11.5 times and 1.3 times.The corrosion resistance of B coating to acid and salt corrosion relative to the matrix increase 7.5 times and 1.2 times.