Ceramic coated exhaust manifold and method

Details Ceramic coated exhaust manifold and method Ceramic coated exhaust manifold and method

1997-10-06

1999-08-17

Ryznic, John E.

Power plants

Internal combustion engine with treatment or handling of...

Common receiver having inlets from plural cylinder

427239, 4274193, 428701, F01N 710, B32B 502, B32B 900

Patent

active

059376430

ABSTRACT:
A cast iron exhaust manifold having an inside surface covered with a ceramic coating comprising, by weight, about 30% to about 70% unfused silica, about 5% to about 30% magnesia, about 5% to about 20% alumina and about 3% to about 10% sodium oxide. The coating will preferably be built up in multiple layers at least one of which is relatively porous and another is relatively dense resulting from vacuum degassing of the slurry used to deposit the coating.

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