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Title: Ceramic thermal barrier coating for rapid thermal cycling applications

Abstract

A thermal barrier coating for metal articles subjected to rapid thermal cycling includes a metallic bond coat deposited on the metal article, at least one MCrAlY/ceramic layer deposited on the bond coat, and a ceramic top layer deposited on the MCrAlY/ceramic layer. The M in the MCrAlY material is Fe, Ni, Co, or a mixture of Ni and Co. The ceramic in the MCrAlY/ceramic layer is mullite or Al.sub.2 O.sub.3. The ceramic top layer includes a ceramic with a coefficient of thermal expansion less than about 5.4.times.10.sup.-6 .degree.C.sup.-1 and a thermal conductivity between about 1 J sec.sup.-1 m.sup.-1 .degree.C.sup.-1 and about 1.7 J sec.sup.-1 m.sup.-1 .degree.C.sup.-1.

Inventors:
 [1];  [2]
  1. (Hebron, CT)
  2. (Columbus, IN)
Issue Date:
OSTI Identifier:
869354
Patent Number(s):
5320909
Assignee:
United Technologies Corporation (Hartford, CT); Cummins Engine Co. (Columbus, IN) OSTI
DOE Contract Number:  
DEN3-331
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
ceramic; thermal; barrier; coating; rapid; cycling; applications; metal; articles; subjected; metallic; bond; coat; deposited; article; mcraly; layer; top; material; mixture; mullite; coefficient; expansion; times; 10; -6; degree; -1; conductivity; metal articles; bond coat; metal article; top layer; thermal cycling; thermal barrier; thermal conductivity; thermal expansion; barrier coating; layer deposited; ceramic layer; rapid thermal; metallic bond; ceramic thermal; /428/415/416/

Citation Formats

Scharman, Alan J., and Yonushonis, Thomas M. Ceramic thermal barrier coating for rapid thermal cycling applications. United States: N. p., 1994. Web.
Scharman, Alan J., & Yonushonis, Thomas M. Ceramic thermal barrier coating for rapid thermal cycling applications. United States.
Scharman, Alan J., and Yonushonis, Thomas M. Sat . "Ceramic thermal barrier coating for rapid thermal cycling applications". United States. https://www.osti.gov/servlets/purl/869354.
@article{osti_869354,
title = {Ceramic thermal barrier coating for rapid thermal cycling applications},
author = {Scharman, Alan J. and Yonushonis, Thomas M.},
abstractNote = {A thermal barrier coating for metal articles subjected to rapid thermal cycling includes a metallic bond coat deposited on the metal article, at least one MCrAlY/ceramic layer deposited on the bond coat, and a ceramic top layer deposited on the MCrAlY/ceramic layer. The M in the MCrAlY material is Fe, Ni, Co, or a mixture of Ni and Co. The ceramic in the MCrAlY/ceramic layer is mullite or Al.sub.2 O.sub.3. The ceramic top layer includes a ceramic with a coefficient of thermal expansion less than about 5.4.times.10.sup.-6 .degree.C.sup.-1 and a thermal conductivity between about 1 J sec.sup.-1 m.sup.-1 .degree.C.sup.-1 and about 1.7 J sec.sup.-1 m.sup.-1 .degree.C.sup.-1.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {1}
}

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