Method for manufacturing a porous material or a composite sinter

Details Method for manufacturing a porous material or a composite sinter Method for manufacturing a porous material or a composite sinter

1987-04-07

1990-02-20

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Of inorganic materials

264 25, 264 27, 264 60, 264 63, 264 80, C04B 3564

Patent

active

049024574

ABSTRACT:
A method for manufacturing a porous body comprising zirconium oxide and a metal carbide is described. The method comprises mixing a metallic zirconium powder, a metal oxide, and a carbon powder, shaping the mixture in a desired form, and igniting a part or portion of the shaped mixture in an atmosphere inert to a combustion reaction of the shaped mixture. The combustion reaction is caused to continue by the heat of the reaction, so that the zirconium is converted to zirconium oxide, and the metal oxide is reduced with zirconium and converted to a metal carbide to obtain a porous body. This body may be readily divided into fine pieces. If the above procedure is effected under a molding compression pressure, a composite sintered product comprising zirconium oxide and the metal carbide is obtained.

REFERENCES:
patent: 4217948 (1980-08-01), Merzhanov et al.
patent: 4642218 (1987-02-01), Rice

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