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Silicon nitride powder and method for producing same, and silicon nitride sintered compact and method for producing same
Provided is a silicon nitride powder containing silicon nitride and carbon, the mass ratio (Cp) of the carbon relative to the entire powder being 0.05% or more, and the mass ratio (Cs) of the carbon contained in the surface portion of the powder relative to the entire powder being 0.05% or less. Provided is a method for producing a silicon nitride powder, the method comprising: a step for obtaining a molded body by molding a kneaded product containing a silicon powder and an organic binder; a step in which the molded body is heated at 900 DEG C or more and less than 1100 DEG C for 1 hour or more and degreased; a step for obtaining a fired product containing silicon nitride and carbon by firing the molded body in a mixed atmosphere containing nitrogen and at least one selected from the group consisting of hydrogen and ammonia; and a step for pulverizing the fired product.
提供一种氮化硅粉末，其为包含氮化硅及碳的氮化硅粉末，其中，相对于粉末整体而言的碳的质量比率Cp为0.05％以上，相对于粉末整体而言的在粉末的表面部所包含的碳的质量比率Cs为0.05％以下。提供一种氮化硅粉末的制造方法，其具有：对包含硅粉末和有机粘结剂的混炼物进行成型而得到成型体的工序；将成型体于900℃以上且低于1100℃加热1小时以上进行脱脂的工序；在包含氮和选自由氢及氨组成的组中的至少一者的混合气氛下对成型体进行烧成而得到包含氮化硅和碳的烧成物的工序；和将烧成物粉碎的工序。
Silicon nitride powder and method for producing same, and silicon nitride sintered compact and method for producing same
Provided is a silicon nitride powder containing silicon nitride and carbon, the mass ratio (Cp) of the carbon relative to the entire powder being 0.05% or more, and the mass ratio (Cs) of the carbon contained in the surface portion of the powder relative to the entire powder being 0.05% or less. Provided is a method for producing a silicon nitride powder, the method comprising: a step for obtaining a molded body by molding a kneaded product containing a silicon powder and an organic binder; a step in which the molded body is heated at 900 DEG C or more and less than 1100 DEG C for 1 hour or more and degreased; a step for obtaining a fired product containing silicon nitride and carbon by firing the molded body in a mixed atmosphere containing nitrogen and at least one selected from the group consisting of hydrogen and ammonia; and a step for pulverizing the fired product.
提供一种氮化硅粉末，其为包含氮化硅及碳的氮化硅粉末，其中，相对于粉末整体而言的碳的质量比率Cp为0.05％以上，相对于粉末整体而言的在粉末的表面部所包含的碳的质量比率Cs为0.05％以下。提供一种氮化硅粉末的制造方法，其具有：对包含硅粉末和有机粘结剂的混炼物进行成型而得到成型体的工序；将成型体于900℃以上且低于1100℃加热1小时以上进行脱脂的工序；在包含氮和选自由氢及氨组成的组中的至少一者的混合气氛下对成型体进行烧成而得到包含氮化硅和碳的烧成物的工序；和将烧成物粉碎的工序。
Silicon nitride powder and method for producing same, and silicon nitride sintered compact and method for producing same
氮化硅粉末及其制造方法、和氮化硅烧结体及其制造方法
NAKAMURA YUZO (Autor:in) / MIYASHITA TOSHIYUKI (Autor:in)
08.11.2024
Patent
Elektronische Ressource
Chinesisch
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