High temperature insulation for ceramic matrix composites

Patent · Sat Jan 01 00:00:00 EST 2000

OSTI ID:872810

Merrill, Gary B ^[1]; Morrison, Jay Alan ^[2]

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1. Monroeville, PA
2. Orlando, FL

A ceramic composition is provided to insulate ceramic matrix composites under high temperature, high heat flux environments. The composite comprises a plurality of hollow oxide-based spheres of varios dimentions, a phosphate binder, and at least one oxide filler powder, whereby the phosphate binder partially fills gaps between the spheres and the filler powders. The spheres are situated in the phosphate binder and the filler powders such that each sphere is in contact with at least one other sphere. The spheres may be any combination of Mullite spheres, Alumina spheres, or stabilized Zirconia spheres. The filler powder may be any combination of Alumina, Mullite, Ceria, or Hafnia. Preferably, the phosphate binder is Aluminum Ortho-Phosphate. A method of manufacturing the ceramic insulating composition and its application to CMC substates are also provided.

• Research Organization: Westinghouse Electric Corp., Pittsburgh, PA (United States)
• DOE Contract Number: FC21-95MC32267
• Assignee: Siemens Westinghouse Power Corporation (Orlando, FL)
• Patent Number(s): US 6013592
• OSTI ID: 872810
• Country of Publication: United States
• Language: English

Related Subjects

temperature
insulation
ceramic
matrix
composites
composition
provided
insulate
heat
flux
environments
composite
comprises
plurality
hollow
oxide-based
spheres
varios
dimentions
phosphate
binder
oxide
filler
powder
whereby
partially
fills
gaps
powders
situated
sphere
contact
combination
mullite
alumina
stabilized
zirconia
ceria
hafnia
preferably
aluminum
ortho-phosphate
method
manufacturing
insulating
application
cmc
substates
composite comprises
filler powders
ceramic matrix
matrix composites
heat flux
ceramic composition
stabilized zirconia
phosphate binder
matrix composite
binder partially
oxide-based spheres
partially fills
oxide filler
ceramic insulating
filler powder
temperature insulation
fills gaps
hollow oxide-based
flux environments
insulate ceramic
site comprises
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