Rotary kinetic fluid motors or pumps – Working fluid passage or distributing means associated with... – Specific casing or vane material
Patent
1979-10-12
1981-09-15
Smith, Leonard E.
Rotary kinetic fluid motors or pumps
Working fluid passage or distributing means associated with...
Specific casing or vane material
291564WL, 264 62, 264 81, 428593, 428598, F01D 2524, B32B 300
Patent
active
042894476
ABSTRACT:
A turbine shroud includes a ceramic sealing layer secured to a metal substrate. In one form, the metal substrate includes a plurality of pegs extending therefrom. Intermediate bonding layers are disposed on the peg-metal substrate structure. A ceramic sealing layer of zirconium oxide with about 20 weight percentage magnesium oxide is disposed, e.g., plasma sprayed, on the intermediate bonding layers. The ceramic sealing layer includes an ordered pattern of very fine cracks therein which reduce the thermal stress in the ceramic sealing layer. A method of constructing a turbine shroud structure is also disclosed.
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Shiembob, L. T. Development of a Plasma Sprayed Ceramic Gas Path Seal for High Pressure Turbine Applications, NTIS N77-25534, Apr. 1977, p. (i 1-8, 55).
Gay, Jr. Charles H.
Hemsworth Martin C.
Lenahan Dean T.
Sterman Albert P.
Tegarden Frederick W.
General Electric Company
Lawrence Derek P.
Silverman Carl L.
Smith Leonard E.
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