Article history: Sintering and mixed oxide (MO) growth signiﬁcantly affect the thermal and mechanical properties of Received 9 August 2015 thermal barrier coating system (TBCs) in gas turbine at high temperature. In this work, we numerically Received in revised form analyzed the effects of sintering and MO growth on the interface cracking of TBCs. A thermal-elasto- 29 September 2015 viscoplastic constitutive model was introduced, in which the effect of sintering was studied using a Accepted 6 October 2015 spherical shell model. Based on the same spherical shell model and our previous experimental observa- Available online 9 October 2015 tions, we theoretically derived the evolution of relative density and applied this constitutive model to the sintering of ceramic coating. The numerical results showed that viscosity, initial porosity of ceramic Keywords: and the growth rate of MO had signiﬁcant effects on interface cracking. In contrast, the inﬂuence of ini- Thermal barrier coating tial pore size of ceramic coating was neglectable. Suggestions were also made for the choice of material Sintering during TBCs design. Mixed oxide Interface crack © 2015 Elsevier B.V. All rights reserved. Constitutive model Finite element method 1. Introduction accompanying with macroscopic volumetric shrinkage. According to Coble’s deﬁnition ,
Applied Surface Science – Elsevier
Published: Jan 1, 2016
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera