Synthesis of well-adhered SiO2-Al2O3 glass-ceramic coating on NiCrFe alloy supports

► The glass-ceramic coating exhibits excellent oxidation and spalling resistance. ► The addition of SiO2 can greatly enhance the specific surface areas of the coatings. ► Crystallization of the SiO2-Al2O3 coatings decreased with increasing Si contents. ► Coatings with good adherence to substrates and to improve wear resistance of the catalysts.