Process for production of spheroidized boron nitride
AssigneeKaneka Corporation
InventorsShusuke Yoshihara, Kazuaki Matsumoto
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Abstract
Disclosed is a process for producing spheroidized boron nitride which enable the further improvement in the heat conductivity of a heat dissipative member. Specifically disclosed is a process for producing spheroidized boron nitride, which is characterized by using spheroidized graphite as a raw material and reacting the spheroidized graphite with a boron oxide and nitrogen at a high temperature ranging from 1600 to 2100° C. to produce the spheroidized boron nitride. The boron oxide to be used in the reaction is preferably boron oxide (B2O3), boric acid (H3BO3), or a substance capable of generating a boron oxide at a higher temperature. A gas to be used in the reaction is preferably nitrogen or ammonia.
Claims5
A process for producing spheroidized boron nitride, the process comprising:
- using spheroidized graphite as a raw material;
- and
- reacting the spheroidized graphite with an oxide of boron and nitrogen at a high temperature ranging from 1600° C. to 2100° C. to produce spheroidized boron nitride which is a laminated and/or aggregated hexagonal boron nitride (hBN) powder having a spherical shape.
Dependencies are inferred from the claim text.