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Title: Multilayered thermal insulation formed of zirconia bonded layers of zirconia fibers and metal oxide fibers and method for making same

Abstract

A multilayered thermal insulating composite is formed of a first layer of zirconia-bonded zirconia fibers for utilization near the hot phase or surface of a furnace or the like. A second layer of zirconia-bonded metal oxide fibers is attached to the zirconia fiber layer by a transition layer formed of intermingled zirconia fibers and metal oxide fibers. The thermal insulation is fabricated by vacuum molding with the layers being sequentially applied from aqueous solutions containing the fibers to a configured mandrel. A portion of the solution containing the fibers forming the first layer is intermixed with the solution containing the fibers of the second layer for forming the layer of mixed fibers. The two layers of fibers joined together by the transition layer are saturated with a solution of zirconium oxynitrate which provides a zirconia matrix for the composite when the fibers are sintered together at their nexi.

Inventors:
 [1];  [2]
  1. (Clinton, TN)
  2. (Farragut, TN)
Publication Date:
Research Org.:
LOCKHEED MARTIN ENRGY SYST INC
OSTI Identifier:
866718
Patent Number(s):
US 4770930
Assignee:
Martin Marietta Energy Systems, Inc. (Oak Ridge, TN) ORNL
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
multilayered; thermal; insulation; formed; zirconia; bonded; layers; fibers; metal; oxide; method; insulating; composite; layer; zirconia-bonded; utilization; near; hot; phase; surface; furnace; attached; fiber; transition; intermingled; fabricated; vacuum; molding; sequentially; applied; aqueous; solutions; containing; configured; mandrel; portion; solution; forming; intermixed; mixed; joined; saturated; zirconium; oxynitrate; provides; matrix; sintered; nexi; zirconia fibers; oxide fibers; vacuum molding; oxide fiber; transition layer; layer formed; thermal insulation; solution containing; metal oxide; aqueous solution; aqueous solutions; solutions containing; thermal insulating; multilayered thermal; insulating composite; zirconia fiber; /428/

Citation Formats

Wrenn, Jr., George E., and Holcombe, Jr., Cressie E. Multilayered thermal insulation formed of zirconia bonded layers of zirconia fibers and metal oxide fibers and method for making same. United States: N. p., 1988. Web.
Wrenn, Jr., George E., & Holcombe, Jr., Cressie E. Multilayered thermal insulation formed of zirconia bonded layers of zirconia fibers and metal oxide fibers and method for making same. United States.
Wrenn, Jr., George E., and Holcombe, Jr., Cressie E. Fri . "Multilayered thermal insulation formed of zirconia bonded layers of zirconia fibers and metal oxide fibers and method for making same". United States. https://www.osti.gov/servlets/purl/866718.
@article{osti_866718,
title = {Multilayered thermal insulation formed of zirconia bonded layers of zirconia fibers and metal oxide fibers and method for making same},
author = {Wrenn, Jr., George E. and Holcombe, Jr., Cressie E.},
abstractNote = {A multilayered thermal insulating composite is formed of a first layer of zirconia-bonded zirconia fibers for utilization near the hot phase or surface of a furnace or the like. A second layer of zirconia-bonded metal oxide fibers is attached to the zirconia fiber layer by a transition layer formed of intermingled zirconia fibers and metal oxide fibers. The thermal insulation is fabricated by vacuum molding with the layers being sequentially applied from aqueous solutions containing the fibers to a configured mandrel. A portion of the solution containing the fibers forming the first layer is intermixed with the solution containing the fibers of the second layer for forming the layer of mixed fibers. The two layers of fibers joined together by the transition layer are saturated with a solution of zirconium oxynitrate which provides a zirconia matrix for the composite when the fibers are sintered together at their nexi.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1988},
month = {1}
}

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