Electrically Insulative Performances of Ceramic and Clay Films Deposited via Supersonic Spraying

Jong Gun Lee, Do Yeon Kim, Bhavana N. Joshi, Jong Hyuk Lee, Tae Kyu Lee, Jang soo Kim, Dae ho Yang, Woo Young Kim, Salem S. Al-Deyab, Sam S. Yoon

    Research output: Contribution to journalArticlepeer-review

    11 Citations (Scopus)

    Abstract

    Supersonic spray coating techniques were applied to deposit ceramic and clay particles as films for use in electrical insulation. TiO2 and Al2O3 ceramics were aerosol-deposited under vacuum while kaolinite, montmorillonite, and bentonite clays were deposited by cold spraying in open air. The electrical resistivity of Al2O3 and TiO2 were ~109 and ~108 Ω cm, respectively. The resistivity of kaolinite and montmorillonite were ~1012 Ω cm. Bentonite showed the lowest electrical resistivity of ~109 Ω cm among the clays because of the high cation exchange capacity of the material. The film surface morphologies and mechanical properties in the form of hardness and scratchability were also investigated.

    Original languageEnglish
    Pages (from-to)763-769
    Number of pages7
    JournalJournal of Thermal Spray Technology
    Volume25
    Issue number4
    DOIs
    Publication statusPublished - 2016 Apr 1

    Bibliographical note

    Publisher Copyright:
    © 2016, ASM International.

    Keywords

    • aerosol deposition
    • ceramics
    • clays
    • cold spraying
    • electrical insulation

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Surfaces, Coatings and Films
    • Materials Chemistry

    Fingerprint

    Dive into the research topics of 'Electrically Insulative Performances of Ceramic and Clay Films Deposited via Supersonic Spraying'. Together they form a unique fingerprint.

    Cite this