Method for manufacturing porous articles

Details Method for manufacturing porous articles Method for manufacturing porous articles

1991-04-29

1993-01-26

Seidel, Richard K.

Metal founding

Process

Shaping liquid metal against a forming surface

164 661, 1641221, B22D 2713

Patent

active

051815494

ABSTRACT:
A process for forming porous articles. The method utilizes an enclosed vessel in which a base material is melted into a molten state. A gas, whose solubility in the base material decreases with decreasing temperature of the base material and increases with increasing pressure of the gas, is dissolved into the base material. Means are provided for cooling the base material while maintaining the gas at a predetermined pressure thereby causing the gas to precipitate during cooling forming pores in the solidified base material.

REFERENCES:
patent: 3554717 (1971-01-01), Shaffer et al.
patent: 3998264 (1976-12-01), Hocking
patent: 4707312 (1987-11-01), Bajaj
patent: 4973358 (1990-11-01), Jin et al.

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