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Sintered silicon nitride having high thermal conductivity and Manufacturing method thereof
The present invention relates to a method for producing highly heat conductive sintered silicon nitride using a non-oxide-based sintering agent, which minimizes concentration of oxygen introduced into the sintered body by treating powdery raw material with heat in advance, thereby enabling acquisition of highly heat conductive sintered silicon nitride. To this end, the method for producing the highly heat conductive sintered silicon nitride comprises the following steps: treating raw silicon nitride powder with heat in advance; mixing the heat-treated powdery raw material along with the non-oxide-based sintering agent and then dissipating the same; drying slurry obtained by undergoing the mixing and dissipation step; molding the dried powder mixture through a cold isostatic pressing (CIP); and sintering the same with high heat and pressure.
본 발명은 고 열전도도의 질화규소 소결체를 얻기 위해 원료분말을 사전 열처리하고 소결체 내부에 유입되는 산소 농도를 최소화할 수 있는 비산화물계 소결 조제를 사용하여 고 열전도도 질화규소 소결체의 제조 방법으로서, 질화규소 원료분말을 사전에 열처리하는 단계; 열처리된 원료분말과 비산화물계 소결 조제를 혼합하여 분산하는 단계; 혼합 및 분산하여 얻은 슬러리를 건조하는 단계; 건조된 혼합분말을 냉간 등방 가압법(CIP)으로 성형하는 단계 및 고온 가압 소결하는 단계를 포함하는 것을 특징으로 한다.
Sintered silicon nitride having high thermal conductivity and Manufacturing method thereof
The present invention relates to a method for producing highly heat conductive sintered silicon nitride using a non-oxide-based sintering agent, which minimizes concentration of oxygen introduced into the sintered body by treating powdery raw material with heat in advance, thereby enabling acquisition of highly heat conductive sintered silicon nitride. To this end, the method for producing the highly heat conductive sintered silicon nitride comprises the following steps: treating raw silicon nitride powder with heat in advance; mixing the heat-treated powdery raw material along with the non-oxide-based sintering agent and then dissipating the same; drying slurry obtained by undergoing the mixing and dissipation step; molding the dried powder mixture through a cold isostatic pressing (CIP); and sintering the same with high heat and pressure.
본 발명은 고 열전도도의 질화규소 소결체를 얻기 위해 원료분말을 사전 열처리하고 소결체 내부에 유입되는 산소 농도를 최소화할 수 있는 비산화물계 소결 조제를 사용하여 고 열전도도 질화규소 소결체의 제조 방법으로서, 질화규소 원료분말을 사전에 열처리하는 단계; 열처리된 원료분말과 비산화물계 소결 조제를 혼합하여 분산하는 단계; 혼합 및 분산하여 얻은 슬러리를 건조하는 단계; 건조된 혼합분말을 냉간 등방 가압법(CIP)으로 성형하는 단계 및 고온 가압 소결하는 단계를 포함하는 것을 특징으로 한다.
Sintered silicon nitride having high thermal conductivity and Manufacturing method thereof
고 열전도도 질화규소 소결체 및 이의 제조 방법
KIM DO KYUNG (author) / LEE HYUN MIN (author) / SEOG IN SIG (author) / LEE EUN BOK (author)
2017-02-28
Patent
Electronic Resource
Korean
IPC:
C04B
Kalk
,
LIME
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