MANGANESE VANADIUM TANTALUM OXIDE AND PIGMENTS HAVING A BLACK METALLIC EFFECT COATED WITH THE SAME

摘要

Manganese vanadium tantalum oxide that can be represented by the formula Mn x V y Ta z O w , where 1 <= x <= 3, 0.001 <= y <= 3, 0.001 <= z <= 2, and w = 7, and alternately, x = 1.25 <= x <= 2.45, 0.1 <= y <= 2.39, 0.2 <= z <= 1.9, and w = 7, methods of producing Mn x V y Ta z O w, a particle that includes Mn x V y Ta z O w and/or a chalcogenide glass layer, and a method of producing the particle are described. The disclosed manganese vanadium tantalum oxide has superior near--infrared reflective properties. The disclosed methods of producing the manganese vanadium tantalum oxide provide products with superior phase purity, appearance and performance and take health and safety into consideration. The construction of the disclosed particle combines the reflective properties of the substrate with the near- infrared reflective properties of Mn x V y Ta z O w, while the chalcogenide glass layer provides aesthetic appeal. The disclosed method of producing the particle involves physical vapor deposition of Mn x V y Ta z O w and/or the chalcogenide glass layer.