Intermediate coating layer for high temperature rubbing seals for rotary regenerators

Patent · 31 December 1994

OSTI ID:869787

Schienle, James L ^[1]; Strangman, Thomas E ^[1]

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1. Phoenix, AZ

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.

• Assignee: AlliedSignal Inc. (Morris Township, Morris County, NJ)
• Patent Number(s): US 5397649
• OSTI ID: 869787
• Country of Publication: United States
• Language: English

Related Subjects

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bond
bond layer
calcium
calcium fluoride
ceramic
coating
coating comprising
coating layer
comprising
comprising zinc
dynamically stable
fluoride
intermediate
intermediate layer
layer
layer comprising
lubricant
lubricant surface
metallic
metallic regenerator
multi-layer
multi-layer coating
nicraly
nicraly bond
oxide
provided
regenerator
regenerator seal
regenerators
resists
rotary
rotary regenerator
rubbing
rubbing seal
seal
seals
solid
solid lubricant
stabilized
stabilized zirconia
stable
surface
surface layer
swelling
temperature
temperature solid
temperatures
thermodynamically
thermodynamically stable
ysz
yttria
yttria stabilized
zinc
zinc oxide
zirconia