Oxidation prohibitive coatings for carbonaceous articles

Details Oxidation prohibitive coatings for carbonaceous articles Oxidation prohibitive coatings for carbonaceous articles

1983-07-28

1985-12-17

Lusignan, Michael R.

Stock material or miscellaneous articles

Self-sustaining carbon mass or layer with impregnant or...

249114R, 249134, 4273762, 427379, 4273978, 428698, 501 5, 501 95, 501128, B05D 302, B32B 900

Patent

active

045592705

ABSTRACT:
A carbonaceous article, e.g., a carbon or graphite crucible or mold, is provided with an oxidation prohibitive coating comprising a rigid, glassy, ceramic, refractory material containing mullite and silicon carbide or boron carbide or both. The carbonaceous article has a coefficient of thermal expansion which is greater than about 1.5.times.10.sup.-6 inch/inch/.degree.C.

REFERENCES:
patent: 3140193 (1964-07-01), Kane
patent: 3348929 (1967-10-01), Valtschev et al.
patent: 3852107 (1974-12-01), Lorkin et al.
patent: 4301387 (1981-11-01), Schiffarth et al.
patent: 4384046 (1983-05-01), Najagami
patent: 4418097 (1983-11-01), Misra

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