Technique for forming silicon carbide coated porous filters

Details Technique for forming silicon carbide coated porous filters Technique for forming silicon carbide coated porous filters

1985-01-14

1987-11-24

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 93R, 266227, 427244, 501 80, 501 89, 2105101, C22B 1500

Patent

active

047087404

ABSTRACT:
The present invention relates to a technique for forming silicon carbide coated porous filters for use in filtering molten metal, especially copper and copper alloy melts. The technique comprises preparing a silicon carbide containing slurry having a viscosity in the range of about 1 to about 50, preferably from about 5 to about 30, centipoise and impregnating a rigid porous substrate material with the slurry. In a preferred embodiment, the slurry contains mono-aluminum phosphate as a binding agent, ethylene glycol as a wetting agent, powdered silicon carbide having a maximum settling rate of about 0.1 mm./min. and the balance essentially water. After draining of the excess slurry, the coated substrate material is heated to substantially prevent foaming of the coating during firing and fired to bond the silicon carbide coating to the substrate material.

REFERENCES:
patent: 2715063 (1951-09-01), Weiss
patent: 3039864 (1962-06-01), Hess et al.
patent: 3172757 (1965-03-01), Hess et al.
patent: 3175918 (1965-03-01), McGahan et al.
patent: 3893917 (1975-07-01), Pryor et al.
patent: 3947363 (1976-03-01), Pryor et al.
patent: 3962081 (1976-06-01), Yarwood et al.
patent: 4007923 (1977-02-01), Chia
patent: 4024056 (1977-05-01), Yarwood et al.
patent: 4075303 (1978-02-01), Yarwood et al.
patent: 4257810 (1981-03-01), Narumiya
patent: 4258099 (1981-02-01), Naruyima
patent: 4265659 (1981-05-01), Blome
patent: 4277281 (1981-07-01), Weber et al.
patent: 4330327 (1982-05-01), Pryor
patent: 4342664 (1982-08-01), Blome
patent: 4343704 (1982-08-01), Brockmeyer
patent: 4426287 (1984-01-01), Narumiya
patent: 4559244 (1985-12-01), Kasprzyk

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