Intermediate coating layer for high temperature rubbing seals fo

Details Intermediate coating layer for high temperature rubbing seals fo Intermediate coating layer for high temperature rubbing seals fo

1992-08-26

1995-03-14

Walsh, Donald P.

Stock material or miscellaneous articles

All metal or with adjacent metals

Having metal particles

428553, 428557, 428558, 428564, B22F 704

Patent

active

053976495

ABSTRACT:
A metallic regenerator seal is provided having multi-layer coating comprising a NiCrAlY bond layer, a yttria stabilized zirconia (YSZ) intermediate layer, and a ceramic high temperature solid lubricant surface layer comprising zinc oxide, calcium fluoride, and tin oxide. Because of the YSZ intermediate layer, the coating is thermodynamically stable and resists swelling at high temperatures.

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ATTAP/AGT101 Advanced Turbine Technology Applications Project, By: Allied-Signal Aerospace, Oct. 1990.

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