Claims
- 1. A ceramic composite which is corrosion and erosion resistant to molten metal comprising, in combination, 18.5 to 29.0 weight percent mullite, 35 to 18 weight percent aluminum nitride, balance boron nitride in a minimum concentration of at least about 40 percent by weight.
- 2. A ceramic composite as defined in claim 1 comprising the addition of calcium oxide in a range of between 1 to 5 wt % based upon the weight of the entire composite.
- 3. A ceramic composite as defined in claim 2 comprising 18.5 to 29 wt % mullite, 18.5 to 29 wt % aluminum nitride, 3 to 2 wt % calcium oxide and between 60 and 40 wt % boron nitride.
Parent Case Info
This is a division of application Ser. No. 08/037,751, filed Mar. 26, 1993, now U.S. Pat. No. 5,336,454.
US Referenced Citations (5)
Divisions (1)
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Number |
Date |
Country |
Parent |
37751 |
Mar 1993 |
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