Ru-M-O FINE POWDER, METHOD OF MANUFACTURING THE SAME AND THICK FILM RESISTOR COMPOSITION USING THE SAME

• Main Author: KAWAKUBO KATSUHIRO
• Format: Patent
• Language: English
• Published: 04.11.2005
• Edition: 7
• Subjects: BASIC ELECTRIC ELEMENTS; CABLES; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; CONDUCTORS; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; INORGANIC CHEMISTRY; INSULATORS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; METALLURGY; PRINTED CIRCUITS; RESISTORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES

PROBLEM TO BE SOLVED: To provide a Ru-M-O fine powder having high specific resistance and excellent dispersibility with a fine and uniform particle diameter, a method of manufacturing the same and a thick film resistor composition using the same and having excellent static discharge durability . SOLUTION: The method of manufacturing the Ru-M-O fine powder from a Ru compound (A) and a 5A group metallic compound (B) including a 5A group element M selected from at least one kind of Nb and Ta includes a 1st process for blending the 5A group metallic compound (B) in the quantity sufficient to form a solid solution having a rutile type crystal structure with the Ru compound (A) in the Ru compound (A) and mixing the sufficient quantity of a boron compound (C) with the blended material, a 2nd process for heating the resultant mixture at 500-1,000°C to form the solid solution of Ru with the 5A group metal M and a heat-treated material comprising boron oxide and a 3rd process for adding a solvent into the resultant heat-treated material to dissolve and remove boron oxide. COPYRIGHT: (C)2006,JPO&NCIPI