Design against fracture of functionally graded thermal barrier coatings using transformation toughening

Tsukamoto, Hideaki (2010) Design against fracture of functionally graded thermal barrier coatings using transformation toughening. Materials Science and Engineering A, 527 13-14: 3217-3226. doi:10.1016/j.msea.2010.01.087


Author Tsukamoto, Hideaki
Title Design against fracture of functionally graded thermal barrier coatings using transformation toughening
Journal name Materials Science and Engineering A   Check publisher's open access policy
ISSN 0921-5093
1873-4936
Publication date 2010-05-25
Sub-type Article (original research)
DOI 10.1016/j.msea.2010.01.087
Volume 527
Issue 13-14
Start page 3217
End page 3226
Total pages 10
Editor M. Kato
E. J. Lavernia
M. J. Starink
E. Werner
J. D. Whittenberger
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Collection year 2011
Language eng
Formatted abstract
This study presents a new theoretical model for design against fracture of zirconia-toughened functionally graded thermal barrier coatings (FG TBCs). A micromechanics-based model, which investigates the effect of the mismatch in material properties of the constituent phases on the transformation toughening mechanism in zirconia-enriched multi-phase composites, has been incorporated with the lamination theory. The developed model enables to engineer ZrO2-toughened multi-phase FG TBCs with required or pre-determined fracture properties by utilizing the synergetic characteristics of their constituent phases. A simulation for ZrO2/Ni FG TBC plates subjected to thermal shock loadings has been conducted. The results demonstrated that within the compositional gradation investigated, the substrate metal (Ni)-rich compositional gradation contributed to high fracture-resistant properties based on fracture-mechanics considerations. This tendency was theoretically and experimentally confirmed with results available in the open literature.
© 2010 Elsevier B.V. All rights reserved.
Keyword Functionally graded materials
Multi-phase composites
Transformation toughening
Stress intensity factor
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2011 Collection
 
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Citation counts: TR Web of Science Citation Count  Cited 10 times in Thomson Reuters Web of Science Article | Citations
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Created: Sun, 09 May 2010, 00:02:39 EST