Title:
PRODUCTION OF LOW PRESSURE PHASE BORON NITRIDE POWDER
Document Type and Number:
Japanese Patent JP3397503
Kind Code:
B2
Abstract:
PURPOSE: To produce homogeneous boron nitride powder in a high yield without requiring an additional process such as filtration, centrifugal separation or drying.
CONSTITUTION: Boric acid is mixed with melamine in such a ratio as to regulate the atomic ratio of B:N to 1:1 to 1:6, the resultant mixture is held in a steam- contg. atmosphere at 0-200°C and ≥5% relative humidity to form melamine borate and this melamine borate is fired at 600-2,200°C in an atmosphere of nonoxidizing gas.
Inventors:
Suguru Kawasaki
Yukio Kuroda
Yukio Kuroda
Application Number:
JP8804395A
Publication Date:
April 14, 2003
Filing Date:
April 13, 1995
Export Citation:
Assignee:
DENKI KAGAKU KOGYO KABUSHIKI KAISHA
International Classes:
C01B21/064; C04B35/583; C04B35/626; (IPC1-7): C01B21/064; C04B35/583; C04B35/626
Domestic Patent References:
| JP60151202A | ||||
| JP61191505A | ||||
| JP61286207A |