Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1987-05-19
1989-12-05
Shoap, Allan N.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277235R, 277235A, 277DIG6, 4151734, 4151735, 4151744, 4151745, 416241R, 416241B, F01D 514, F04D 2908, F16J 15453
Patent
active
048848204
ABSTRACT:
A rotary gas seal in which a first member, e.g., a tip, cooperates with a second member to inhibit gas flow therebetween, the improvement wherein, the tip is provided with a ceramic or metallic coating bonded thereto, the surface of the coating having a plurality of laser-formed depressions and providing a wear-resistant, cutting surface capable of cutting into the second member. Also, a turbine or compressor blade having a tip surface adapted to cooperate with a sealing surface to form a seal between the blade and the sealing surface and a ceramic or metallic carbide coating bonded to said tip surface, the coating having a plurality of laser-formed depressions and providing a wear-resistant, cutting surface capable of cutting into the sealing surface.
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I. E. Sumner and D. Ruckle, "Development of Improved-Durability Plasma Sprayed Ceramic Coatings for Gas Turbine Engines", AIAA/SAE/ASME 16th Joint Propulsion Conference, AIAA-80-1193, 7/2/80.
Balmer Norman L.
Jackson John E.
O'Brien C. F.
Shoap Allan N.
Union Carbide Corporation
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