Thin abradable ceramic air seal

Details Thin abradable ceramic air seal Thin abradable ceramic air seal

1988-12-16

1990-06-26

Powell, Jr., Everette A.

Rotary kinetic fluid motors or pumps

Bearing, seal, or liner between runner portion and static part

Between blade edge and static part

4151744, 416174, F01D 520

Patent

active

049367455

ABSTRACT:
An abradable coating is described for interaction with a abrasive gas turbine engine component to provide sealing. The abradable coating comprises yttria stabilized zirconia with intentional porosity which is applied by plasma spraying to a MCrAlY bond coat which in turn rest on a superalloy substrate. The coating system is applied by plasma spraying. The coating system is adapted to interact with an abrasive coated abrasive treated gas turbine engine component.

REFERENCES:
patent: 3964877 (1976-06-01), Bessen et al.
patent: 3975165 (1976-08-01), Elbert et al.
patent: 4269903 (1981-05-01), Clingman et al.
patent: 4336276 (1982-06-01), Bill et al.
patent: 4405284 (1983-09-01), Albrecht et al.
patent: 4566700 (1986-01-01), Shiembob
patent: 4588607 (1986-05-01), Matarese et al.
patent: 4741973 (1988-05-01), Condit et al.
patent: 4744725 (1988-05-01), Matarese et al.

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