MATÉRIAU D'OXYDE MIXTE NOIR ET SON PROCÉDÉ DE FABRICATION

摘要

Provided are a black mixed oxide that contains chromium per se of any valency as a main component, and fails to contain cobalt as the main component material, and has a high safety, an excellent color tone and economical efficiency, and a method for producing the same, and various products using the black mixed oxide material. The mixed oxides comprise oxides containing La, Mn and Cu as main components but containing neither Cr nor Co as a main component, wherein the contents of La, Mn and Cu in the mixed oxides satisfy the following ratios, as oxide equivalent amount with respect to 100% by weight of the oxide equivalent amount: the La content as La₂O₃being 35-70 wt%; the Mn content as MnO₂being 25-60 wt%; and the Cu content as CuO being 0.5-10 wt%.