Journal Article

FZJ-2019-03620

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png A constitutive model for the sintering of suspension plasma‐sprayed thermal barrier coating with vertical cracks

Lv, B. ; Mücke, R.FZJ* ; Zhou, D. ; Fan, X. ; Wang, T. J. (Corresponding author) ; Guillon, O.FZJ* ; Vaßen, R.FZJ*

2019
Soc. Westerville, Ohio

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Please use a persistent id in citations: doi:10.1111/jace.16491

Abstract: The degradation of mechanical properties due to sintering is one of the major issues during high temperature service of thermal barrier coating system for advanced gas turbines. In this study, a constitutive model was developed by the variational principle, based on the experimentally observed microstructure features of suspension plasma‐sprayed thermal barrier coatings. The constitutive model was further implemented in finite element analysis software, in order to investigate the effect of vertical cracks. The evolution of microstructure during sintering, coating shrinkage and mechanical degradation were predicted. The numerical predictions of Young's modulus were generally in agreement with experimental results. Furthermore, the effect of vertical cracks on the strain tolerance and sintering resistance were discussed. It was confirmed that the introduction of vertical cracks contributed to the improvement of both properties.

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Contributing Institute(s):

1. Werkstoffsynthese und Herstellungsverfahren (IEK-1)
2. JARA-ENERGY (JARA-ENERGY)

Research Program(s):

1. 113 - Methods and Concepts for Material Development (POF3-113) (POF3-113)

Appears in the scientific report 2019

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Database coverage:
; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection

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