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Title: Thermal shock resistance ceramic insulator

Abstract

Thermal shock resistant cermet insulators containing 0.1-20 volume % metal present as a dispersed phase. The insulators are prepared by a process comprising the steps of (a) providing a first solid phase mixture of a ceramic powder and a metal precursor; (b) heating the first solid phase mixture above the minimum decomposition temperature of the metal precursor for no longer than 30 minutes and to a temperature sufficiently above the decomposition temperature to cause the selective decomposition of the metal precursor to the metal to provide a second solid phase mixture comprising particles of ceramic having discrete metal particles adhering to their surfaces, said metal particles having a mean diameter no more than 1/2 the mean diameter of the ceramic particles, and (c) densifying the second solid phase mixture to provide a cermet insulator having 0.1-20 volume % metal present as a dispersed phase.

Inventors:
 [1];  [2]
  1. (Oak Ridge, TN)
  2. (Maynardville, TN)
Issue Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
OSTI Identifier:
863718
Patent Number(s):
4234338
Assignee:
United States of America as represented by United States (Washington, DC) ORNL
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
thermal; shock; resistance; ceramic; insulator; resistant; cermet; insulators; containing; 1-20; volume; metal; dispersed; phase; prepared; process; comprising; steps; providing; solid; mixture; powder; precursor; heating; minimum; decomposition; temperature; 30; minutes; sufficiently; selective; provide; particles; discrete; adhering; surfaces; mean; diameter; densifying; metal particle; ceramic insulator; shock resistance; metal precursor; ceramic powder; thermal shock; process comprising; metal particles; ceramic particles; temperature sufficient; mixture comprising; solid phase; dispersed phase; decomposition temperature; ceramic particle; temperature sufficiently; phase mixture; comprising particles; shock resistant; cermet insulators; cermet insulator; /75/264/428/

Citation Formats

Morgan, Chester S., and Johnson, William R. Thermal shock resistance ceramic insulator. United States: N. p., 1980. Web.
Morgan, Chester S., & Johnson, William R. Thermal shock resistance ceramic insulator. United States.
Morgan, Chester S., and Johnson, William R. Tue . "Thermal shock resistance ceramic insulator". United States. https://www.osti.gov/servlets/purl/863718.
@article{osti_863718,
title = {Thermal shock resistance ceramic insulator},
author = {Morgan, Chester S. and Johnson, William R.},
abstractNote = {Thermal shock resistant cermet insulators containing 0.1-20 volume % metal present as a dispersed phase. The insulators are prepared by a process comprising the steps of (a) providing a first solid phase mixture of a ceramic powder and a metal precursor; (b) heating the first solid phase mixture above the minimum decomposition temperature of the metal precursor for no longer than 30 minutes and to a temperature sufficiently above the decomposition temperature to cause the selective decomposition of the metal precursor to the metal to provide a second solid phase mixture comprising particles of ceramic having discrete metal particles adhering to their surfaces, said metal particles having a mean diameter no more than 1/2 the mean diameter of the ceramic particles, and (c) densifying the second solid phase mixture to provide a cermet insulator having 0.1-20 volume % metal present as a dispersed phase.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1980},
month = {1}
}

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