Insulating powder and compositions for resistant coating

摘要

An insulating powder for the formation of a resistant coating is disclosed which comprises a glass powder consisting of 60 to 70% by weight of ZnO, 19 to 25% by weight of B2O3, and 10 to 16% by weight of SiO2. A composition for the formation of a resistant coating is also disclosed which comprises the powdered oxide of a platinum-family element; the powder of at least one oxide selected from the group consisting of indium oxides, tin oxides, and cadmium oxides; a glass powder capable of forming a crystalline phase on being fired; a ceramic powder; and an organic vehicle.