Silicon nitride composite refractories

Details Silicon nitride composite refractories Silicon nitride composite refractories

1983-08-11

1985-09-10

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Refractory

501 87, 501 88, 501 92, 501 98, C04B 3558, C04B 3556, C04B 3504, C04B 3510

Patent

active

045406740

ABSTRACT:
The present invention relates to silicon nitride composite refractories having silicon nitride bonds therein and having an increased thermal shock-resistance, an improved molten steel-resistance and an improved mechanical strength, which consists of silicon nitride at 20 to 60 wt %, refractory materials at 10 to 50 wt % and boron nitirde at 1 to 30 wt %, or additionally carbon fibers of 0.5 to 10 wt %. The above described characteristics can be realized because the silicon nitride bonds are bonding structures.

REFERENCES:
patent: 3813252 (1974-05-01), Lipp
patent: 3833389 (1974-09-01), Komeya et al.
patent: 4377542 (1983-03-01), Mangels et al.
patent: 4412008 (1983-10-01), Miyamoto et al.

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