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Title: Intermediate coating layer for high temperature rubbing seals for rotary regenerators

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.
 [1];  [1]
  1. (Phoenix, AZ)
Issue Date:
OSTI Identifier:
AlliedSignal Inc. (Morris Township, Morris County, NJ) OSTI
Patent Number(s):
US 5397649
Contract Number:
Country of Publication:
United States
intermediate; coating; layer; temperature; rubbing; seals; rotary; regenerators; metallic; regenerator; seal; provided; multi-layer; comprising; nicraly; bond; yttria; stabilized; zirconia; ysz; ceramic; solid; lubricant; surface; zinc; oxide; calcium; fluoride; thermodynamically; stable; resists; swelling; temperatures; thermodynamically stable; yttria stabilized; solid lubricant; coating comprising; coating layer; regenerator seal; layer comprising; temperature solid; zinc oxide; surface layer; intermediate layer; stabilized zirconia; calcium fluoride; rotary regenerator; comprising zinc; multi-layer coating; nicraly bond; metallic regenerator; lubricant surface; rubbing seal; bond layer; dynamically stable; /428/