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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
Publication Date:
OSTI Identifier:
869354
Patent Number(s):
US 5320909
Assignee:
United Technologies Corporation (Hartford, CT); Cummins Engine Co. (Columbus, IN)
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. 1994. "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 = {},
url = {https://www.osti.gov/biblio/869354}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {1}
}