| Title |
Preparation of Al2O3 - B4c Composite Powder by Self - Propagating High Temperature Synthesis Process |
| Authors |
송성민(Sung Min Joo); 고석권(Seog Kwon Ko); 이종현(Jong Hyeon Lee); 원창환(Chang 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. |