In-Situ SEM Observation of Mechanical Failure of Hybrid Plasma Spray Coatings

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F24%3A00604644" target="_blank" >RIV/61389021:_____/24:00604644 - isvavai.cz</a>
Result on the web
<a href="https://dl.asminternational.org/itsc/proceedings/ITSC2024/84864/266/32470" target="_blank" >https://dl.asminternational.org/itsc/proceedings/ITSC2024/84864/266/32470</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.31399/asm.cp.itsc2024p0266" target="_blank" >10.31399/asm.cp.itsc2024p0266</a>

Result language
angličtina
Original language name
In-Situ SEM Observation of Mechanical Failure of Hybrid Plasma Spray Coatings
Original language description
Hybrid plasma spraying combines deposition of coatings from coarse powders and liquids (suspensions or solutions) so that the benefits of both routes may be combined. In this study, failure evolution of early-stage thermal barrier coatings (TBCs) with hybrid YSZ-YSZ and YSZ-Al2O3 top-coats deposited by hybrid water/argon-stabilized plasma torch was evaluated. In-situ bending experiment was carried out in SEM to assess potential influence of the secondary miniature phase addition on the coating failure during mechanical loading. Adapted high-resolution open-source strain-mapping code GCPU_Optical_flow was used to track evolution of the local coating failure. For the tested coatings, addition of miniature phase did not weaken the hybrid coating microstructure as the crack propagation was practically insensitive to the presence of the secondary phase and dissimilar splat boundaries. Main micromechanisms of the top-coat failure were thus splats cracking, loss of cohesion (splat debonding), and mutual splat sliding.
Czech name
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Czech description
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Project
<a href="/en/project/GA22-21478S" target="_blank" >GA22-21478S: High-enthalpy deposition of hybrid plasma spray coatings</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Thermal Spray 2024: Proceedings from the International Thermal Spray Conference
ISBN
9798331305437
ISSN
—
e-ISSN
—
Number of pages
12
Pages from-to
266-277
Publisher name
DVS Media GmbH
Place of publication
Düsseldorf
Event location
Milán
Event date
Apr 29, 2024
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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