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Title: High temperature insulation for ceramic matrix composites

Abstract

A ceramic composition is provided to insulate ceramic matrix composites under high temperature, high heat flux environments. The composition comprises a plurality of hollow oxide-based spheres of various dimensions, 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 substrates are also provided.

Inventors:
 [1];  [2]
  1. Monroeville, PA
  2. Orlando, FL
Publication Date:
Research Org.:
Westinghouse Electric Corp., Pittsburgh, PA (United States)
OSTI Identifier:
873982
Patent Number(s):
US 6287511
Assignee:
Siemens Westinghouse Power Corporation (Orlando, FL)
DOE Contract Number:  
FC21-95MC32267
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
temperature; insulation; ceramic; matrix; composites; composition; provided; insulate; heat; flux; environments; comprises; plurality; hollow; oxide-based; spheres; various; dimensions; 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; substrates; filler powders; ceramic matrix; matrix composites; heat flux; composition comprises; 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; /264/

Citation Formats

Merrill, Gary B, and Morrison, Jay Alan. High temperature insulation for ceramic matrix composites. United States: N. p., 2001. Web.
Merrill, Gary B, & Morrison, Jay Alan. High temperature insulation for ceramic matrix composites. United States.
Merrill, Gary B, and Morrison, Jay Alan. 2001. "High temperature insulation for ceramic matrix composites". United States. https://www.osti.gov/servlets/purl/873982.
@article{osti_873982,
title = {High temperature insulation for ceramic matrix composites},
author = {Merrill, Gary B and Morrison, Jay Alan},
abstractNote = {A ceramic composition is provided to insulate ceramic matrix composites under high temperature, high heat flux environments. The composition comprises a plurality of hollow oxide-based spheres of various dimensions, 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 substrates are also provided.},
doi = {},
url = {https://www.osti.gov/biblio/873982}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2001},
month = {1}
}