Silicon nitride-based sinter

Details Silicon nitride-based sinter Silicon nitride-based sinter

1994-10-24

1997-06-03

Group, Karl

Compositions: ceramic

Ceramic compositions

Refractory

501 92, C04B 35587, C04B 35596

Patent

active

056354312

ABSTRACT:
A silicon nitride-based sinter contains as component elements thereof magnesium in the range of from 0.1 to 1.5% by weight, aluminum in the range of from 0.1 to 3.5% by weight, carbon in the range of from 0.01 to 6% by weight, and oxygen in the range of from 0.2 to 5% by weight, the balance consisting essentially of silicon, nitrogen, and impurities. This sinter is obtained by sintering a ceramic mixture comprising 0.5 to 6% by weight of a MgO.Al.sub.2 O.sub.3 spinel structure, 0.1 to 20% by weight of silicon carbide, not more than 1% by weight of silicon oxide, and the balance substantially of silicon nitride and impurities. Owing to the incorporation of the MgO.Al.sub.2 O.sub.3 spinel structure and silicon carbide, the produced silicon nitride-based ceramic acquires an outstanding ability to resist corrosion caused by such chemicals as acids and alkalis (resistance to chemicals) without impairing such inherent characteristic properties of silicon nitride as strength, resistance to abrasion, and resistance to heat.

REFERENCES:
patent: 4615990 (1986-10-01), Richon et al.
patent: 4911870 (1990-03-01), Komatsu et al.
patent: 5187127 (1993-02-01), Goto et al.
patent: 5238885 (1993-08-01), Asayama et al.
patent: 5384081 (1995-01-01), Wotting et al.
patent: 5394015 (1995-02-01), Tsuzuki et al.
Chemical Abstracts, vol. 112, No. 10, Abstract No. 82900m, p. 350, Mar. 5, 1990.
Journal Of The Ceramic Society Of Japan International Edition, vol. 100, No. 7, pp. 925-929, Jul. 7, 1992.

Affiliated with

Also associated with

Rating

Silicon nitride-based sinter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Silicon nitride-based sinter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Silicon nitride-based sinter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-391317