Effect of the microstructural design of plasma-sprayed thermal barrier coatings on its the thermal cycling behavior

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The microstructure of thermal barrier coatings (TBC) plays an important role in the thermal cycling behavior of TBCs. In this study, ceramic coatings with different pore structures were prepared by atmospheric plasma spraying (APS). Graphite with different morphology was used as pore former to adjust the pore structure of the coatings. Then, the thermal cycling behavior of TBCs with different structure was characterized. By depositing a porous 8YSZ layer on the conventional 8YSZ layer, the thermal cycling life of TBCs can be improved. However, when the porosity of the porous layer increased to about 30%, the porous layer detached from the under layer after several cycles. An elastic energy model was applied to explain the thermal cycling behavior of TBCs.

Original languageEnglish
Title of host publicationInternational Thermal Spray Conference and Exposition, ITSC 2017
PublisherASM International
Pages697-702
Number of pages6
ISBN (Electronic)9781510858220
StatePublished - 2017
EventInternational Thermal Spray Conference and Exposition, ITSC 2017 - Dusseldorf, Germany
Duration: 7 Jun 20179 Jun 2017

Publication series

NameProceedings of the International Thermal Spray Conference
Volume2

Conference

ConferenceInternational Thermal Spray Conference and Exposition, ITSC 2017
Country/TerritoryGermany
CityDusseldorf
Period7/06/179/06/17

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