Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Silicon nitride powder and method for producing same, and silicon nitride sintered compact and method for producing same
Provided is a silicon nitride powder in which the fluorine content is 600 mass ppm or less, the carbon content is 0.1 mass% or less, and the alpha rate of the silicon nitride powder is 80% or more. Provided is a method for producing a silicon nitride powder, the method comprising: a filling step for filling a container with a raw material powder containing a silicon powder and having a fluoride content of 1 part by mass or less relative to 100 parts by mass of the silicon powder so that the bulk density is 0.7 g/cm3 or more and the filling height of the raw material powder is 15-80 mm; a firing step in which the raw material powder filled in the container is fired in an atmosphere containing nitrogen gas to obtain a fired product containing silicon nitride; and a pulverizing step for pulverizing the fired product.
本发明提供氮化硅粉末，其中，氟的含量为600质量ppm以下，并且碳的含量为0.1质量％以下，氮化硅粉末的α化率为80％以上。本发明提供氮化硅粉末的制造方法，其具有：填充工序，将包含硅粉末、且氟化物相对硅粉末100质量份而言的含量为1质量份以下的原料粉末以堆积密度成为0.7g/cm3以上、并且原料粉末的填充高度成为15～80mm的方式填充于容器；烧成工序，在包含氮气的气氛中对填充于容器的原料粉末进行烧成，得到包含氮化硅的烧成物；和粉碎工序，对烧成物进行粉碎。
Silicon nitride powder and method for producing same, and silicon nitride sintered compact and method for producing same
Provided is a silicon nitride powder in which the fluorine content is 600 mass ppm or less, the carbon content is 0.1 mass% or less, and the alpha rate of the silicon nitride powder is 80% or more. Provided is a method for producing a silicon nitride powder, the method comprising: a filling step for filling a container with a raw material powder containing a silicon powder and having a fluoride content of 1 part by mass or less relative to 100 parts by mass of the silicon powder so that the bulk density is 0.7 g/cm3 or more and the filling height of the raw material powder is 15-80 mm; a firing step in which the raw material powder filled in the container is fired in an atmosphere containing nitrogen gas to obtain a fired product containing silicon nitride; and a pulverizing step for pulverizing the fired product.
本发明提供氮化硅粉末，其中，氟的含量为600质量ppm以下，并且碳的含量为0.1质量％以下，氮化硅粉末的α化率为80％以上。本发明提供氮化硅粉末的制造方法，其具有：填充工序，将包含硅粉末、且氟化物相对硅粉末100质量份而言的含量为1质量份以下的原料粉末以堆积密度成为0.7g/cm3以上、并且原料粉末的填充高度成为15～80mm的方式填充于容器；烧成工序，在包含氮气的气氛中对填充于容器的原料粉末进行烧成，得到包含氮化硅的烧成物；和粉碎工序，对烧成物进行粉碎。
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、以及氮化硅烧结体及其制造方法
NOGAMI NAOTSUGU (Autor:in) / TANAKA TOSHIO (Autor:in) / TAKEDA GO (Autor:in)
24.11.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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