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SILICON NITRIDE POWDER AND METHOD FOR PRODUCING SAME, AND SILICON NITRIDE SINTERED BODY AND METHOD FOR PRODUCING SAME
Provided is a silicon nitride powder containing silicon nitride and carbon, wherein a mass proportion Cp of carbon with respect to the entire powder is 0.05% or more, and wherein a mass proportion Cs of carbon contained in a surface portion of the powder with respect to the entire powder is 0.05% or less. Provided is a method for manufacturing silicon nitride powder, the method including: molding a kneaded material containing a silicon powder and an organic binder to obtain a molded body, degreasing the molded body by heating the molded body at 900°C or more and less than 1100°C for 1 hour or more; firing the molded body in a mixed atmosphere containing nitrogen and at least one selected from a group consisting of hydrogen and ammonia to obtain a fired product containing silicon nitride and carbon; and pulverizing the fired product.
SILICON NITRIDE POWDER AND METHOD FOR PRODUCING SAME, AND SILICON NITRIDE SINTERED BODY AND METHOD FOR PRODUCING SAME
Provided is a silicon nitride powder containing silicon nitride and carbon, wherein a mass proportion Cp of carbon with respect to the entire powder is 0.05% or more, and wherein a mass proportion Cs of carbon contained in a surface portion of the powder with respect to the entire powder is 0.05% or less. Provided is a method for manufacturing silicon nitride powder, the method including: molding a kneaded material containing a silicon powder and an organic binder to obtain a molded body, degreasing the molded body by heating the molded body at 900°C or more and less than 1100°C for 1 hour or more; firing the molded body in a mixed atmosphere containing nitrogen and at least one selected from a group consisting of hydrogen and ammonia to obtain a fired product containing silicon nitride and carbon; and pulverizing the fired product.
SILICON NITRIDE POWDER AND METHOD FOR PRODUCING SAME, AND SILICON NITRIDE SINTERED BODY AND METHOD FOR PRODUCING SAME
SILICIUMNITRIDPULVER UND VERFAHREN ZUR HERSTELLUNG DAVON SOWIE SILICIUMNITRIDSINTERKÖRPER UND VERFAHREN ZUR HERSTELLUNG DAVON
POUDRE DE NITRURE DE SILICIUM ET PROCÉDÉ POUR SA PRODUCTION ET CORPS FRITTÉ EN NITRURE DE SILICIUM ET PROCÉDÉ POUR SA PRODUCTION
NAKAMURA YUZO (author) / MIYASHITA TOSHIYUKI (author)
2024-12-18
Patent
Electronic Resource
English
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