INFLUENCE OF SYNTHESIS CONDITIONS ONAl(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 06, 1135-1141

Abstract: Although Zirconium diboride(ZrB2)is a desirable combination with some good properties, it is easily oxidized in the high-temperature air to impact high-temperature properties, which dwindles the applied range. In order to decrease oxidization and improve the high-temperature properties ofZrB2, the surface ofZrB2is coated withAl(OH)3–Y(OH)3to synthesizeAl(OH)3–Y(OH)3/ZrB2composite particles. In this paper, the conditions of synthesizingAl(OH)3–Y(OH)3/ZrB2composite particles by the co-precipitation method are investigated.Al(OH)3–Y(OH)3/ZrB2composite particles are synthesized under different conditions, but the conditions of synthesizingAl(OH)3–Y(OH)3/ZrB2composite particles with the better coating quality requirepH= 9, the appropriate concentration (Al3+= 0.017mol/L,Y3+= 0.01mol/L) of composite solution, reaction time of 60 min, titration speed of 0.05 ml/s, using the dispersant in theZrB2suspension and the ultrasonic dispersion, respectively.

Keywords: ZrB2composite particles; co-precipitation method; synthesis condition; coating quality (search for similar items in EconPapers)
Date: 2007
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DOI: 10.1142/S0218625X07010718

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