EFFECT OF COATING CONTENT ON THE PROPERTIES OFA1(OH)3–Y(OH)3/ZrB2COMPOSITE PARTICLES

Jie-Guang Song (), Lian-Meng Zhang, Jun-Guo Li and Jian-Rong Song
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Jie-Guang Song: State Key Lab of Advanced Technology for Materials, Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
Lian-Meng Zhang: State Key Lab of Advanced Technology for Materials, Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
Jun-Guo Li: State Key Lab of Advanced Technology for Materials, Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
Jian-Rong Song: State Key Lab of Advanced Technology for Materials, Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China

Surface Review and Letters (SRL), 2007, vol. 14, issue 03, 445-449

Abstract: Zirconium diboride is widely applied to high-temperature materials, but it is easily oxidized at high temperature. To increase the oxidation resistance of zirconium diboride at high temperature, theA1(OH)3–Y(OH)3is coated on theZrB2surface to prepareA1(OH)3–Y(OH)3/ZrB2composite particles. In this paper, the effect of coating content on the properties ofA1(OH)3–Y(OH)3/ZrB2composite particles is investigated. It is analyzed that the particle size and particle size distribution ofA1(OH)3–Y(OH)3/ZrB2composite particles is increased with the coating content. The dispersion ofZrB2particles is largely increased with the coating content of 0%–20%; the dispersion ofZrB2particles is similar when the coating content is from 20% to 30%. The oxidation resistance ratio of theZrB2particles with 30% coating content is the best than that of other conditions—it is about three times more than that of the originalZrB2particles.

Keywords: Zirconium diboride; coating content; composite particles; particle size; dispersion; oxidation resistance (search for similar items in EconPapers)
Date: 2007
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DOI: 10.1142/S0218625X07009530

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