Process for the protection of carbon bodies

Details Process for the protection of carbon bodies Process for the protection of carbon bodies

1979-08-13

1980-11-18

Silverberg, Sam

Coating processes

Immersion or partial immersion

Molten metal or fused salt bath

432264, 106 3827, 428408, 266280, 427133, 65 26, 156DIG83, A23L 128

Patent

active

042346304

ABSTRACT:
A process for protecting carbon bodies against attack by molten silicon by applying a separating protective layer is provided which is characterized in that a separating layer is applied to the surface of the carbon body to be protected in such a manner as to wet it. The separating layer consists of alkaline earth metal fluorides in admixture with 0 to 90 mole % of alkaline earth metal silicates having a melting point lower than that of silicon.

REFERENCES:
patent: 1948382 (1934-02-01), Johnson
patent: 2597963 (1952-05-01), Wenter
patent: 3191852 (1965-06-01), Kaatz

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