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펄스 전류 활성 연소합성과 소결에 의한 4.25 Co0.53Fe0.47-Al2O3 복합재료제조
이동목 ( Dong Mok Lee ),조광명 ( Kwang Myoung Jo ),손인진 ( In Jin Shon ) 대한금속재료학회 ( 구 대한금속학회 ) 2009 대한금속·재료학회지 Vol.47 No.6
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)