Silicon nitride composite refractories
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United States of America Patent
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Sep 10, 1985
Grant Date -
N/A
app pub date -
Aug 11, 1983
filing date -
Feb 8, 1983
priority date (Note) -
Expired
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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.
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