COO FREE BLACK SPINEL CERAMIC PIGMENT CONTAINING NIO, FE.SUB.2O.SUB.3 AND CR.SUB.2O.SUB.3

摘要

ABSTRACT OF THE DISCLOSUREAlthough free of CoO, the present spinel ceramic pigments have anintensity of black coloration comparable to those using coba they arenickel-rich, selected, compositions in the NiO-MnO-CuO-Fe2O3-Mn2O3-V2O3-A12O3 system, and they can be used with glaze frits containing up toabout 10% ZnO.