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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20506 - Coating and films

Projekt

<a href="/cs/project/GA22-21478S" target="_blank" >GA22-21478S: Vysokoentalpická depozice hybridních plazmových nástřiků</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Thermal Spray 2024: Proceedings from the International Thermal Spray Conference

ISBN

9798331305437

ISSN

—

e-ISSN

—

Počet stran výsledku

12

Strana od-do

266-277

Název nakladatele

DVS Media GmbH

Místo vydání

Düsseldorf

Místo konání akce

Milán

Datum konání akce

29. 4. 2024

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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