| 摘要 |
The present invention relates to a process for the production of sintered materials comprising BN, sintering additives and at least one compound selected from the group consisting of Si3N4 and SiAlON, wherein the BN component is present in the form of crystalline particles with an average particle size <2 mu m and the BN content amounts to between 0.1 and 34 vol-%. In the process, a single phase amorphous Si-B-N component with a specific surface <1.5 m/g and optionally Si3N4-powder is mixed with oxidic and/or nitridic sintering additives to form a mixture, the mixture is formed into a moulded article, and the moulded article is sintered at temperatures in the range from 1,450 DEG C. to 2,100 DEG C. in an atmosphere which contains N2.
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