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US 4,568,595 AGranted
Coated ceramic structure and method of making same
OwnerJeffrey R. Morrisinventor
Life of this patent
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Abstract
A ceramic structure comprises a reticulated ceramic portion defined by a plurality of interconnecting webs having a pore distribution of between 5 and 125 (ppi) pores per linear inch and a ceramic coating portion sintered to the webs along a surface defined by one face of said coating. The coating has a thickness less than about 3 millimeters. The ratio of average thickness of the coating to the thickness of the web forming the reticulated ceramic is between 1 and 10.
Claims5
A ceramic structure comprising:
- (a) a reticulated ceramic portion defined by a plurality of interconnecting webs having a pore distribution of between 5 and 125 pores per linear inch and
- (b) a ceramic coating portion sintered directly to the webs along a surface defined by one face of said coating, said coating having a thickness between about 0.25 and 3 millimeters, and the ratio of average thickness of the coating to the thickness of the webs forming the reticulated ceramic being between 1 and 10.
A method of manufacturing a ceramic structure comprising the steps for:
- (a) preparing a reticulated ceramic having a plurality of interconnecting webs having a pore distribution between 125 and 65 pores per linear inch.
- (b) subsequently spraying a ceramic slurry directly upon at least one surface of the reticulated ceramic to form a coating having a thickness between about 0.25 and about 0.50 millimeter thick,
- (c) firing the composite structure.
A method of manufacturing a ceramic structure comprising the steps for:
- (a) preparing a reticulated ceramic having a plurality of interconnecting webs having a pore distribution between about 125 and about 5 pores per linear inch.
- (b) subsequently troweling a ceramic slip directly upon at least one surface of the reticulated ceramic to form a coating between 0.5 and 3 millimeters thick,
- (c) firing the composite structure.
Dependencies are inferred from the claim text.