| 摘要 |
A method of producing silicon nitride powders having a high alpha -Si3N4 content and a fine and uniform particle size is disclosed, which comprises mixing SiO powder with C powder and, if necessary, Si powder and/or Si3N4 powder, and then firing at 1,400-1,800 DEG C in a nitriding atmosphere having N2 partial pressure of not less than 2 atmospheric pressures. |
