Comparison of the thermal transport property measurements of thermally sprayed coatings by the laser and xenon flash techniques

Weiguang Chi, Sanjay Sampath, Hsin Wang

    Research output: Contribution to journalReview articlepeer-review

    5 Scopus citations

    Abstract

    Development of precise and reliable measurement methods is an important step in the study of the thermal transport property of inherently complex systems such as thermally sprayed coatings. In this study, the applicability and repeatability of both the laser and xenon flash techniques have been investigated through the measurements on the coatings made from ceramics, metals, alloys, and composites. For the four series of material systems, issues such as the effect of powder morphology, coating thickness, spraying technique, chemical composition, and oxidation on the thermal diffusivity as well as the corresponding measurement repeatability are assessed. This investigation provides information necessary for precise and reliable characterization of the thermal transport property of various thermally sprayed coatings.

    Original languageEnglish
    Pages (from-to)444-448
    Number of pages5
    JournalJournal of Thermal Spray Technology
    Volume16
    Issue number3
    DOIs
    StatePublished - Sep 2007

    Funding

    This research was supported by the MRSEC program of National Science Foundation under award DMR 0080021 and also supported in part by Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Transportation Technologies, as part of the High Temperature Materials Laboratory User Program at Oak Ridge National Lab by the UT-Battelle LLC, for the Department of Energy under contract DE-AC05000OR22725. The authors thank V. Srinivasan, A. Vaidya, and A. Valarezo for their help with specimen preparation. The authors also thank B. G. Ravi for his aid and cooperation.

    Keywords

    • Laser flash
    • Thermal diffusivity
    • Xenon flash

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