In the past, stable red stains at high firing temperatures were unknown to the ceramic industry. This gap was bridged by Degussa's line of inclusion pigments which are stable up to a firing temperature of 2372F (1300C) and which are resistant to unfavorable kiln atmospheres.
By using inclusion pigments in glazes, the following additional advantages can be achieved in comparison to the traditional cadmium glazes:
Favorable thermal expansion,
Low sensitivity to contamination during processing,
Low influence of contamination in the bisque,
Possibility of blending with other stains, oxides and frits,
Compatibility with other glazes,
Matting possibility with the addition of zinc oxide,
Non-problematic behavior during processing of glaze slurry/slip.
Colors may be intermixed.