Coo free black spinel ceramic pigment containing nio,...

C - Chemistry – Metallurgy – 09 – C

Patent

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6/210, 261/33

C09C 1/00 (2006.01) C04B 35/00 (2006.01)

Patent

CA 1118962

ABSTRACT OF THE DISCLOSURE Although free of CoO, the present spinel ceramic pigments have an intensity of black coloration comparable to those using cobalt; they are nickel-rich, selected, compositions in the NiO-MnO-CuO-Fe2O3-Mn2O3- V2O3-A12O3 system, and they can be used with glaze frits containing up to about 10% ZnO.

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