Process of produciing sintered materials based on Si.sub.3 N.sub

Details Process of produciing sintered materials based on Si.sub.3 N.sub Process of produciing sintered materials based on Si.sub.3 N.sub

1995-07-03

1997-02-25

Group, Karl

Compositions: ceramic

Ceramic compositions

Refractory

501 97, 501 98, 264 65, C04B 35583

Patent

active

056058713

ABSTRACT:
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 Si.sub.3 N.sub.4 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 Si.sub.3 N.sub.4 -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.degree. C. to 2,100.degree. C. in an atmosphere which contains N.sub..sub.2.

REFERENCES:
patent: 5030598 (1991-07-01), Hsieh
patent: 5128286 (1992-07-01), Funayama et al.
patent: 5324694 (1994-06-01), Petrak et al.
patent: 5389587 (1995-02-01), Nakashima et al.
Asano et al., Reactivity Between BN Composite Ceramics and Molten Stainless Steel, Taikabutsu Overseas, vol. 11, No. 3, pp. 3-11 (1991).
C. Doche and F. Thevenot, Elaboration and Characterization of Si.sub.3 N.sub.4 -BN Composites, Key Engineering Materials, vol. 89-91, pp. 449-454 (1994).
Orbit Abstract of DE 41 07 108 (Sep. 10, 1992).
Derwent Abstract of JP-238767 (Sep. 25, 1987).
Kawasaki Steel Technical Report, Nr. 23, pp. 5-11, K. Isomura et al., "Development of Machinable Si.sub.3 N.sub.4 -BN Composite Ceramics", Oct., 1990.
Mat. Res. Soc. Symp. Proc., Bd. 271, pp. 821-826, H.-P. Baldus et al., "Synthesis of Advanced Ceramics in the Systems Si-B-N and Si-B-N-C Employing Novel Precursor Compounds", 1992. No Month.

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