Ceramic coating bonded to iron member

Details Ceramic coating bonded to iron member Ceramic coating bonded to iron member

1991-07-26

1992-12-01

Pianalto, Bernard D.

Stock material or miscellaneous articles

Hollow or container type article

Shrinkable or shrunk

428324, 428448, 428454, 428469, 428701, B05D 306

Patent

active

051679884

ABSTRACT:
A ceramic coating bonded to an iron tubular member comprising a bonding layer formed on a surface of the iron tubular member by a reaction of an iron tubular oxide layer of the iron tubular member and a silicate; and an iron oxide diffusion-preventing layer produced from fine metal oxide particles or an organometallic binder by firing on a surface of the bonding layer. The ceramic coating may further comprises an oxidation-preventing layer, a heat-insulating layer, a refractory layer or a thin dense protective layer. It may be produced by coating the surface of the iron tubular member with a silicate binder to form a layer which is then converted to a bonding layer by a heat treatment in a steam atmosphere; coating the surface of the bonding layer with fine metal oxide particles or an organometallic binder to form an iron oxide diffusion-preventing layer; and after curing and drying firing the resulting ceramic coating in an atmosphere having an oxygen partial pressure of 10 mmHg or less.

REFERENCES:
patent: 4115313 (1978-09-01), Lyon et al.
patent: 4174296 (1979-11-01), Kass
patent: 4314573 (1982-02-01), Spitzer
patent: 4515778 (1985-05-01), Kastell

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