Paper Title:
Synthesis of Ultra-Fine ZrB2 Powder by Borothermal Reaction under High Heating Rate
  Abstract

Ultra-fine zirconium diboride (ZrB2) powders have been synthesized by borothermal reduction reaction, using zirconium oxychloride (ZrOCl2•8H2O) as the precursors of zirconia. The thermodynamic variation in the amorphous ZrO2-B system was studied by thermogravimetric and differential thermal analysis (TG-DTA). The precursors containing amorphous ZrO2 and B were heat-treated under a high heating rate. It is shown that the borothermal reaction can be completed at a relatively low temperature (~950 °C) and short duration (~5 min) under a heating rate of 200 °C/min. The synthesized powders have an average crystalline size of 300 nm with oxygen content less than 2.62 wt%.

  Info
Periodical
Edited by
Takashi Goto, Yibing Cheng, Zhengyi Fu and Lianmeng Zhang
Pages
77-80
DOI
10.4028/www.scientific.net/AMR.66.77
Citation
G. Sun, H. Wang, W. M. Wang, Y. C. Wang, Z. Y. Fu, "Synthesis of Ultra-Fine ZrB2 Powder by Borothermal Reaction under High Heating Rate", Advanced Materials Research, Vol. 66, pp. 77-80, 2009
Online since
April 2009
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$32.00
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