| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for burning an hBN at an ordinary pressure in the atmosphere without using a pressure device such as a hot press and without using a non-oxidizing atmosphere, which can solve problems in conventional methods for producing a hexagonal boron nitride burned substance, and to provide a burned substance produced by the method. <P>SOLUTION: The method for producing a boron nitride burned substance comprises mixing a hexagonal boron nitride with a burning auxiliary which forms a liquid phase at a burning temperature and has properties to be wetted with the hexagonal boron nitride and burning the mixture without pressurization in the atmosphere. The resulting hexagonal boron nitride burned substance comprises hexagonal boron nitride and a vitreous substance. The burning auxiliaries preferably include aluminosilicates such as albite, NaAlSi<SB>3</SB>O<SB>8</SB>, potash feldspar and KAlSi<SB>3</SB>O<SB>8</SB>. <P>COPYRIGHT: (C)2007,JPO&INPIT |
