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Vol.47, No.6, 344 ~ 349, 2009
Title
Fabrication of 4.25 Co0.53Fe0.47-Al2O3 Composite by High Frequency Induction Heated Combustion Synthesis and Sintering
이동목 Dong Mok Lee , 조광명 Kwang Myoung Jo , 손인진 In Jin Shon
Abstract
Dense 4.25 Co0.53Fe0.47-Al2O3 composite was simultaneously synthesized and consolidated by pulsed current activated combustion method within 2 min from mechanically activated powders. Consolidation was accomplished under the combined effects of a pulsed current and mechanical pressure. Dense 4.25 Co0.53Fe0.47-Al2O3 with relative density of up to 96% was produced under simultaneous application of 80 MPa pressure and the pulsed current. Fracture toughness and hardness of the composite are 6 MPa·m1/2 and 570 kg/mm2 respectively. (Received March 3, 2009)
Key Words
combustion synthesis, composite materials, nanopowder, Fe-Al2O3, Co-Al2O3
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