| 摘要 |
A granulate for the prodn. of coloured ceramic articles contains ceramic powder, e.g. Al2O3, ZrO, yttrium oxide, cerium oxide, MgO, SiC, and/or Si3N4; a binder, esp. a polyacetal, pref. polyoxymethylene, a polyoxymethylene copolymer and/or polyoxymethylene homopolymer; and colouring particles, esp. metal powders, metal oxide powders, their precursor cpds. or pigments, pref. the lanthanides or their oxides, Co, Cr, Cu, Fe, Mn, Mo, Nb, Ni, Pb, Si, Sn, Ti, V, W or their oxides, esp. CoO, CO2O3, Co3O4, Cr2O3, Cu2O, CrO, Fe2O3, Fe3O4, MnO, Mn2O3, MnO2, MoO2, MoO3, NbO, NbO2, Nb2O5, NiO, PbO, PbO2, SiO2, SnO, SnO2, TiO, Ti2O3, TiO2, VO2, V2O5, WO2, W2O5, WO3, metal salts or complexes, esp. carboxylates, carbonates, nitrates or acetylacetonitrates, or speckled pigments from the crystal structure classes of Baddeleyites, Haematites, Cassitenites, Corinds, Olivires, Rutile, Sphen, Spinels or Zircon. The amount of binder is 30-60 vol.%. Also claimed is the use of the granulate for the prodn. of ceramic articles by injection moulding; a process for the prodn. of the ceramic articles; and coloured ceramic articles powdered from the granulate. |
