Ferro Corporation
Modified black spinel pigments for glass and ceramic enamel applications
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Abstract:
Modified copper chromite spinel pigments exhibit lower coefficients of thermal expansion than unmodified structures. Three methods exist to modify the pigments: (1) the incorporation of secondary modifiers into the pigment core composition, (2) control of the pigment firing profile, including both the temperature and the soak time, and (3) control of the pigment core composition.
Status:
Grant
Type:
Utility
Filling date:
23 Jan 2017
Issue date:
16 Nov 2021