发明名称 |
APPARATUS AND METHOD FOR PREPARING MULTICOMPONENT NANO CERAMIC POWDER BY ULTRASONIC SPRAY PYROLYSIS |
摘要 |
PURPOSE: Provided is a method for preparing multicomponent nano ceramic powder by ultrasonic spray pyrolysis which is characterized in that oxidant and reductant precursors are made into a drop of liquid, and then rapidly pyrolyzed. Accordingly, the resultant method produces homogeneous ceramic nano powder through a single process without calcination. CONSTITUTION: The multicomponent ceramic nanopowder is prepared by the following steps of: spraying a mixture of oxidant and reductant precursors stored in a chamber into a drop of liquid by ultrasonicator, preventing agglomeration and solidification of liquid drops by using hot air, and (S100) feeding liquid drops to a reactor through a filter attached to the chamber; (S200) pyrolyzing liquid drops during the drops pass through the reactor(800-1000deg.C) within 0.1-3sec; (S300) gathering prepared ceramic powder. The oxidant precursors are metal nitrates, and reductant precursors are carbohydrazide, urea, glycine, and fuels containing C, H, N and O.
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申请公布号 |
KR20030071014(A) |
申请公布日期 |
2003.09.03 |
申请号 |
KR20020010518 |
申请日期 |
2002.02.27 |
申请人 |
HANMA FOUNDATION;JUN, BYUNG SEI |
发明人 |
JUN, BYUNG SEI;KWON, HYEOK BO;LEE, SANG JIN;YOON, JON DO |
分类号 |
C04B35/626;(IPC1-7):C04B35/626 |
主分类号 |
C04B35/626 |
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