Title:
METHOD FOR MANUFACTURING HOLLOW PARTICULATE OF FULLERENE-SHAPED BORON NITRIDE
Document Type and Number:
Japanese Patent JP3496050
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To manufacture hollow particulates of fullerene-shaped boron nitride containing no impurity and having uniform outside diameters by using carbon nanotube of uniform size as a starting raw material.
SOLUTION: A method for manufacturing the hollow particulates of fullerene- shaped boron nitride is distinguished by that carbon nanotube is used as the raw material and is subjected to chemical reaction with an oxide of boron and nitrogen at high temperature of 1000°C to 1500°C. The oxide of boron used for the reaction is selected from boron oxide (B2O3), boric acid (H3BO3) and substances generating the oxide of boron at high temperature and is charged together with carbon nanotube into a crucible made of a boron nitride sintered compact, is laid in a high frequency induction heating furnace and is heated in gaseous nitrogen.
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Inventors:
Yoshio Bando
Waitin han
Tadao Sato
Keiji Kurashima
Waitin han
Tadao Sato
Keiji Kurashima
Application Number:
JP2000111620A
Publication Date:
February 09, 2004
Filing Date:
April 13, 2000
Export Citation:
Assignee:
National Institute for Materials Science
International Classes:
C01B21/064; C04B38/00; (IPC1-7): C01B21/064
Domestic Patent References:
| JP2000109306A |
Other References:
【文献】日本セラミックス協会年会講演予稿集,2000年 3月21日,Vol.2000,p85