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:
- Issue Date:
- OSTI Identifier:
- 7267912
- Patent Number(s):
- 4770930
- Application Number:
- PPN: US 6-933944
- Assignee:
- Martin Marietta Energy Systems, Inc., Oak Ridge, TN (United States)
- DOE Contract Number:
- AC05-84OR21400
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 24 Nov 1986
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; THERMAL INSULATION; FABRICATION; ZIRCONIUM OXIDES; COMPOSITE MATERIALS; MOLDING; SINTERING; ZIRCONIUM NITRATES; CHALCOGENIDES; MATERIALS; NITRATES; NITROGEN COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; ZIRCONIUM COMPOUNDS; 360601* - Other Materials- Preparation & Manufacture
Citation Formats
Wrenn, Jr, G E, and Holcombe, Jr, C 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, G E, & Holcombe, Jr, C 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, G E, and Holcombe, Jr, C E. Tue .
"Multilayered thermal insulation formed of zirconia bonded layers of zirconia fibers and metal oxide fibers and method for making same". United States.
@article{osti_7267912,
title = {Multilayered thermal insulation formed of zirconia bonded layers of zirconia fibers and metal oxide fibers and method for making same},
author = {Wrenn, Jr, G E and Holcombe, Jr, C 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 = {Tue Sep 13 00:00:00 EDT 1988},
month = {Tue Sep 13 00:00:00 EDT 1988}
}