발간논문

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Vol.33, No.9, 1154 ~ 1160, 1995
Title
Preparation of Al2O3 - B4c Composite Powder by Self - Propagating High Temperature Synthesis Process
송성민Sung Min Joo, 고석권Seog Kwon Ko, 이종현Jong Hyeon Lee, 원창환Chang Whan Won
Abstract
A technique based on a SHS(Self-propagating High Temperature Synthesis) process is proposed for manufacturing Al₂O₃-B₄C(ΔH_(f298)) system because of a low exothermic potential of the reactants, a chemical furnace technique, which is an indirect combustion ignition using 3TiO₂/4A1/3C, was introduced to this system. The synthesis of Al₂O₃-B₄C composite powder was affected by the mole ratio and the particle size. The synthesized Al₂O₃-B₄C composite powder have an angular shape, and the mean size of produced particle is about 2.17 micron. The Al₂O₃-B₄C composite powder has a higher purity than the reactants. This is because the impurities are volatilized at the high-temperature generated during the rapid exothermic reaction.
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