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    Fracture characteristics of freestanding 8 wt% Y2O3-ZrO2 coatings by single edge notched beam and Vickers indentation tests

    191941_93862_MSEA_13_manu.pdf (938.5Kb)
    Access Status
    Open access
    Authors
    Wan, J.
    Zhou, M.
    Yang, X.
    Dai, C.
    Zhang, Y.
    Mao, W.
    Lu, Chunsheng
    Date
    2013
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Wan, J. and Zhou, M. and Yang, X. S. and Dai, C.Y. and Zhang, Y. and Mao, W. G. and Lu, C. 2013. Fracture characteristics of freestanding 8 wt% Y2O3-ZrO2 coatings by single edge notched beam and Vickers indentation tests. Materials Science and Engineering: A. 581: pp. 140-144.
    Source Title
    Materials Science and Engineering A
    DOI
    10.1016/j.msea.2013.05.086
    ISSN
    0921-5093
    Remarks

    NOTICE: this is the author’s version of a work that was accepted for publication in Materials Science and Engineering: A. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Materials Science and Engineering: A, Volume 581, October 2013, Pages 140–144. http://dx.doi.org/10.1016/j.msea.2013.05.086

    URI
    http://hdl.handle.net/20.500.11937/8302
    Collection
    • Curtin Research Publications
    Abstract

    The freestanding 8 wt% Y2O3–ZrO2 (8YSZ) samples prepared by an air plasma sprayed technique were measured by single edge notched bending tests. The strain evolution and cracking near a pre-existed notch region were in-situ monitored by digital image correlation. With the help of digital image data, the critical bending loads of these notched freestanding 8YSZ samples can be accurately determined. The fracture toughness and micro-hardness of freestanding 8YSZ samples were tested by Vickers indentations. The normalized fracture toughness calculated according to the Weibull statistics is in agreement with the testing and available data. These results are instructive in predicting the lifetime and durability of thermal barrier coatings with irregular geometric structures.

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