High-Temperature Cycling of Plasma Sprayed Multilayered NiCrAlY/YSZ/GZO/YAG Thermal Barrier Coatings Prepared from Liquid Feedstocks
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F21%3A00541172" target="_blank" >RIV/61389021:_____/21:00541172 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21340/21:00344666
Result on the web
<a href="https://link.springer.com/article/10.1007/s11666-020-01107-5" target="_blank" >https://link.springer.com/article/10.1007/s11666-020-01107-5</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s11666-020-01107-5" target="_blank" >10.1007/s11666-020-01107-5</a>
Alternative languages
Result language
angličtina
Original language name
High-Temperature Cycling of Plasma Sprayed Multilayered NiCrAlY/YSZ/GZO/YAG Thermal Barrier Coatings Prepared from Liquid Feedstocks
Original language description
High-enthalpy hybrid water/argon-stabilized plasma (WSP-H) torch may be used for efficient deposition of coatings from dry powders, suspensions, and solutions. WSP-H torch was used to deposit two complete thermal barrier coatings (TBCs) with multilayered top-coat. NiCrAlY was used as bond-coat and deposited on nickel-based superalloy substrates. Top-coat consisted of up to three sublayers: (i) yttria-stabilized zirconia (ZrO2-8 wt.%Y2O3-YSZ) deposited from solution, (ii) gadolinium zirconate (Gd2Zr2O7-GZO) deposited from suspension, and (iii) optional yttrium aluminum garnet (Y3Al5O12-YAG) overlayer deposited from suspension. Each of the sublayers was intended to provide different functionalities, namely improved fracture toughness, low thermal conductivity, and high erosion resistance, respectively. High-temperature performance and thermal shock resistance of the deposited coatings were tested by thermal cycling fatigue “TCF” test (maximum temperature 1100 °C, 1 h dwell per cycle) and “laser-rig” test (maximum temperature ~ 1530 °C, 5 min dwell per cycle) exposing samples to isothermal and gradient thermal conditions, respectively. In both tests, coatings endured around 800 test cycles which shows great potential for further development of these layers and their application in demanding thermal conditions. Analysis of the samples after the test showed microstructural changes and identified reason of ultimate coating failure.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20501 - Materials engineering
Result continuities
Project
<a href="/en/project/GA19-10246S" target="_blank" >GA19-10246S: Deposition mechanisms and properties of multiphase plasma sprayed coatings prepared with liquid feedstocks</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Thermal Spray Technology
ISSN
1059-9630
e-ISSN
1544-1016
Volume of the periodical
30
Issue of the periodical within the volume
1
Country of publishing house
US - UNITED STATES
Number of pages
16
Pages from-to
81-96
UT code for WoS article
000585033100002
EID of the result in the Scopus database
2-s2.0-85094970801