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Bao Shujuan. Reductive Reaction Synthesis and Acid-washing Purification of Titanium Diboride Powder[J]. Development and Application of Materials, 2000, 15(5): 17-21. DOI: 10.19515/j.cnki.1003-1545.2000.05.004
Citation: Bao Shujuan. Reductive Reaction Synthesis and Acid-washing Purification of Titanium Diboride Powder[J]. Development and Application of Materials, 2000, 15(5): 17-21. DOI: 10.19515/j.cnki.1003-1545.2000.05.004
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Reductive Reaction Synthesis and Acid-washing Purification of Titanium Diboride Powder

  • Luoyang Ship Material Research Institute, Luoyang 471039, China

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  • Received Date: March 19, 2000
  • Available Online: June 16, 2024
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  • Based on SHS reductive reaction,TiB2mixed powder was synthesized and the high-pure TiB2 was obtained by acid-washing treatment．The effects of synthesis procedure and acid-washing conditions on the purity of TiB2 powder were investigated,and the thermodynamics of acid-washing procedure for synthesized powder were analyzed．The experimental results showed that the chemical reaction of the TiO2-B2O3-Mg system consisted of two parts．In the first step,the elements of B and Ti were reduced by Mg powder,secondly,the TiB2 was formed by chemical combination of the two monomer elements．The purity of TiB2 powder mainly depends on acid-washing conditions．With the concentration of hydrochloric acid and amount of excessive acid increasing and the acid-washing time prolonging,the purity of TiB2 powder increase gradually．Moreover,with the acid-washing temperature rising up,the acid-washing velocity can be considerably quickened．
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