Plastic and nonmetallic article shaping or treating: processes – Outside of mold sintering or vitrifying of shaped inorganic... – Utilizing sol or gel
Patent
1995-06-06
1997-06-03
Czaja, Donald E.
Plastic and nonmetallic article shaping or treating: processes
Outside of mold sintering or vitrifying of shaped inorganic...
Utilizing sol or gel
264 86, C04B 3332
Patent
active
056351208
ABSTRACT:
An improvement in a thermally insulating component for an engine part, made by sintering from ceramic materials, comprises, the thermally insulating component having a composition, consisting of a mixture of zirconium oxide in the range of about 5% to about 25% by volume and mullite in the range of about 75% to about 95% by volume. Further, the mixture of zirconium oxide and mullite is obtained by chemically mixing the zirconium oxide and mullite in their molecular states, rather than mechanically mixing them. Another feature of this invention includes, forming said thermally insulating component by slip casting and pressureless sintering the mixture of zirconium oxide and mullite at a temperature no greater than 1700.degree. C. This improvement in a thermally insulating component for an engine part, made from a mullite-zirconia ceramic composite, embodying the present invention, is particularly useful in making flame decks for cylinder heads, and insulating coverings for pistons and exhaust ports.
REFERENCES:
patent: 4777153 (1988-10-01), Sonuparlak et al.
patent: 5368887 (1994-11-01), Hoshino et al.
Haselkorn Michael H.
Hester Virgil R.
Long Michael C.
Caterpillar Inc.
Czaja Donald E.
Khosla Pankaj M.
Ruller Jacqueline A.
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