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Manufacturing method of aluminum nitride using porous carbon crucible
The present invention provides a manufacturing method of aluminum nitride, which comprises the steps of: mixing alumina or alumina hydrate powder and carbon powder and charging the mixture in a porous carbon crucible; and making nitrogen gas flow into the porous carbon crucible to permeate the nitrogen gas into pores of the charged powder and the pores of the porous carbon crucible, while maintaining a temperature of 1600 to 2,000°C for 5 to 20 hours to reduce and nitride the alumina or alumina hydrate with carbon. The manufacturing method according to the present invention promotes a reaction between reactive gas (N_2) and the powder by shortening a penetration and diffusion time of the reactive gas (N_2) to the contained powder by proceeding the reaction in the porous carbon crucible, thereby manufacturing a high-quality aluminum nitride powder and improving productivity and yield.
본 발명은 알루미나 또는 알루미나 수화물 분말과, 카본 분말을 배합하여 다공성 카본 도가니에 장입하는 단계; 및 상기 다공성 카본 도가니에 질소 가스를 흘려주어, 장입된 분말의 공극과 다공성 카본 도가니의 기공으로 질소 가스를 침투시키면서 1600 내지 2000℃의 온도를 5 내지 20 시간 유지하여, 알루미나 또는 알루미나 수화물을 탄소로 환원시키고 질화시키는 단계를 포함하는, 질화알루미늄의 제조방법을 제공한다.
Manufacturing method of aluminum nitride using porous carbon crucible
The present invention provides a manufacturing method of aluminum nitride, which comprises the steps of: mixing alumina or alumina hydrate powder and carbon powder and charging the mixture in a porous carbon crucible; and making nitrogen gas flow into the porous carbon crucible to permeate the nitrogen gas into pores of the charged powder and the pores of the porous carbon crucible, while maintaining a temperature of 1600 to 2,000°C for 5 to 20 hours to reduce and nitride the alumina or alumina hydrate with carbon. The manufacturing method according to the present invention promotes a reaction between reactive gas (N_2) and the powder by shortening a penetration and diffusion time of the reactive gas (N_2) to the contained powder by proceeding the reaction in the porous carbon crucible, thereby manufacturing a high-quality aluminum nitride powder and improving productivity and yield.
본 발명은 알루미나 또는 알루미나 수화물 분말과, 카본 분말을 배합하여 다공성 카본 도가니에 장입하는 단계; 및 상기 다공성 카본 도가니에 질소 가스를 흘려주어, 장입된 분말의 공극과 다공성 카본 도가니의 기공으로 질소 가스를 침투시키면서 1600 내지 2000℃의 온도를 5 내지 20 시간 유지하여, 알루미나 또는 알루미나 수화물을 탄소로 환원시키고 질화시키는 단계를 포함하는, 질화알루미늄의 제조방법을 제공한다.
Manufacturing method of aluminum nitride using porous carbon crucible
다공성 카본도가니를 활용한 질화알루미늄의 제조방법
PARK SANGCHUN (author) / CHOI HYUNBIN (author) / PARK JONGSOON (author) / KIM DAEWOONG (author) / UI SANGWOOK (author) / SHIN GWANGHEE (author)
2021-06-30
Patent
Electronic Resource
Korean
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