Preparation Research of CaB₆ Powder by Self-Propagating High-Temperature Synthesis

Abstract:

Self-propagating High-temperature Synthesis (SHS) method was adopted to synthesize powder containing CaB₆, and the power was leaching by sulfuric acid. Effects of reaction atmosphere, magnesium addition, H₂SO₄ acidity and leaching temperature on the performances of CaB₆ powder was investigated, the microstructure of products were researched by SEM and XRD, the results show that the phases of products by SHS are CaB₆、Mg₃B₂O₆ and Ca₃B₂O₆, and high purity CaB₆ powders are obtained after the products by SHS was leaching by Sulfuric acid. The SHS conditions are the vacuum atmosphere and 30% excessive magnesium addition and the leaching conditions are 55% acidity of Sulfuric acid and 40°C leaching temperature, the perfect and uniform grain of CaB₆ powers are obtained at the above conditions.

• Periodical: Advanced Materials Research (Volumes 284-286)
• Pages: 2106-2109
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.284-286.2106
• Online since: July 2011
• Authors: Yi Yong Wang, Hui Jin
• Keywords: Acidity, Leaching Temperature, Purity, Reaction Atmosphere

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