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INFLUENCE OF DISPERSION ON COATING EFFECT OFZrB2@Al(OH)3–Y(OH)3CORE-SHELL COMPOSITE PARTICLES

Author

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  • JIE-GUANG SONG

    (School of Mechanical and Materials Engineering, Jiujiang University, Jiujiang 332005, China)

  • YANG-LIANG LI

    (School of Mechanical and Materials Engineering, Jiujiang University, Jiujiang 332005, China)

  • GANG-CHANG JI

    (School of Mechanical and Materials Engineering, Jiujiang University, Jiujiang 332005, China)

  • DA-MING DU

    (School of Mechanical and Materials Engineering, Jiujiang University, Jiujiang 332005, China)

  • MING-HAN XU

    (School of Mechanical and Materials Engineering, Jiujiang University, Jiujiang 332005, China)

  • LIAN-MENG ZHANG

    (State Key Lab of Advanced Technology for Materials, Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China)

Abstract

ZrB2are widely applied because of some excellent performances; however,ZrB2is easily oxidized in the high-temperature air. To reach betterAl(OH)3–Y(OH)3composite shell and higher coating ratio on theZrB2particles surfaces,ZrB2particles must be adequately dispersed in theZrB2suspension during the coating process. The dispersion ofZrB2particles and the influence of dispersion on coating effect ofZrB2@Al(OH)3–Y(OH)3core-shell composite particles were investigated. The dispersion ofZrB2suspension adding the polyelectrolyte dispersant is better than that ofZrB2suspension adding the nonionic dispersant; the dispersant content is 2 vol% ofZrB2suspension to reach the best dispersion. The best dispersion is obtained by the ultrasonic dispersion for 10 min.ZrB2particles are coated using the dispersant and the ultrasonic dispersion in theZrB2suspension to obtain the better coating effect. The dispersion ofZrB2particles is increased with increasing the coating content.

Suggested Citation

  • Jie-Guang Song & Yang-Liang Li & Gang-Chang Ji & Da-Ming Du & Ming-Han Xu & Lian-Meng Zhang, 2009. "INFLUENCE OF DISPERSION ON COATING EFFECT OFZrB2@Al(OH)3–Y(OH)3CORE-SHELL COMPOSITE PARTICLES," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 16(02), pages 231-239.
    • Handle: RePEc:wsi:srlxxx:v:16:y:2009:i:02:n:s0218625x09012536
    DOI: 10.1142/S0218625X09012536
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    Keywords

    ZrB2; dispersion; coating effect; composite particles;
    All these keywords.

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