Ceramic faced outer air seal for gas turbine engines

Details Ceramic faced outer air seal for gas turbine engines Ceramic faced outer air seal for gas turbine engines

1982-06-17

1983-12-27

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277227, 415174, F01D 1108

Patent

active

044226489

ABSTRACT:
Outer air seal structures of particular suitability for use in gas turbine engines are disclosed. Techniques for improving resistance to erosion while maintaining good abradability are discussed.
In one particular structure the ceramic facing material of an outer air seal (30) at the leading edge region (36) is densified by a plasma gun to produce a glazed area (52) which is resistant to erosion.

REFERENCES:
patent: 3001806 (1961-09-01), Macks
patent: 3126149 (1964-03-01), Bowers et al.
patent: 3339933 (1967-09-01), Foster
patent: 3778184 (1973-12-01), Wood
patent: 4257735 (1981-03-01), Bradley et al.
patent: 4295786 (1981-10-01), Bill et al.
patent: 4336276 (1982-06-01), Bill et al.

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