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

Jie-Guang Song (), Yang-Liang Li, Gang-Chang Ji, Da-Ming Du, Ming-Han Xu and Lian-Meng Zhang
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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

Surface Review and Letters (SRL), 2009, vol. 16, issue 02, 231-239

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.

Keywords: ZrB2; dispersion; coating effect; composite particles (search for similar items in EconPapers)
Date: 2009
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DOI: 10.1142/S0218625X09012536

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