Stability of plasma-sprayed thermal barrier coatings: The role of the waviness of the bond coat and the thickness of the thermally grown oxide layer.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F15%3APU114109" target="_blank" >RIV/00216305:26620/15:PU114109 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.surfcoat.2015.04.021" target="_blank" >http://dx.doi.org/10.1016/j.surfcoat.2015.04.021</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.surfcoat.2015.04.021" target="_blank" >10.1016/j.surfcoat.2015.04.021</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Stability of plasma-sprayed thermal barrier coatings: The role of the waviness of the bond coat and the thickness of the thermally grown oxide layer.

Popis výsledku v původním jazyce

In this paper, the effect of the waviness of the bond coat and the thickness of the thermally grown oxide (TGO) layer on the stability of plasma-sprayed thermal barrier coatings is investigated. Large numbers of threedimensional finite element calculations were performed using a plasma-sprayed MCrAlY+ YSZ thermal barrier coating as a modeled systemand a cosine surface to represent an irregular top-coat/bond-coat interface. Thermal cooling stresses in critical locations (the top coat and the interfaces between the top coat, the TGO, and the bond coat)were evaluated assuming a stress-free initial state and elastic (the substrate, the thermally grown oxide and the top coat) and elastic–ideal plastic (the bond coat) material behavior. The results of this investigation, which have been discussed by taking into account interfacial geometries typical of manufactured coatings, indicate that thewaviness could markedly affect the service lifetime and thus should be considered in both theoretical studies and further experimental endeavors.

Název v anglickém jazyce

Stability of plasma-sprayed thermal barrier coatings: The role of the waviness of the bond coat and the thickness of the thermally grown oxide layer.

Popis výsledku anglicky

In this paper, the effect of the waviness of the bond coat and the thickness of the thermally grown oxide (TGO) layer on the stability of plasma-sprayed thermal barrier coatings is investigated. Large numbers of threedimensional finite element calculations were performed using a plasma-sprayed MCrAlY+ YSZ thermal barrier coating as a modeled systemand a cosine surface to represent an irregular top-coat/bond-coat interface. Thermal cooling stresses in critical locations (the top coat and the interfaces between the top coat, the TGO, and the bond coat)were evaluated assuming a stress-free initial state and elastic (the substrate, the thermally grown oxide and the top coat) and elastic–ideal plastic (the bond coat) material behavior. The results of this investigation, which have been discussed by taking into account interfacial geometries typical of manufactured coatings, indicate that thewaviness could markedly affect the service lifetime and thus should be considered in both theoretical studies and further experimental endeavors.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20506 - Coating and films

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Surface and Coatings Technology

ISSN

0257-8972

e-ISSN

—

Svazek periodika

274

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

11

Strana od-do

26-36

Kód UT WoS článku

000356115700004

EID výsledku v databázi Scopus

2-s2.0-84929652986