발간논문

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Vol.50, No.4, 310 ~ 316, 2012
Title
Mechanical Properties and Fabrication of Nanostructured 1.5TiAl-Al2O3 Composite by Pulsed Current Activated Sintering
김원백 Won Baek Kim , 왕희지 Hee Ji Wang , 노기민 Ki Min Roh , 조성욱 Sung Wook Cho , 임재원 Jae Won Lim , 손인진 In Jin Shon
Abstract
Nano-powders of 1.5TiAl and Al2O3 were synthesized from 1.5TiO2 and 3Al powders by high energy ball milling. Nanocrystalline Al2O3 reinforced composite was consolidated by pulsed current activated sintering within 2 minutes from mechanochemically synthesized powders of Al2O3 and 1.5TiAl. The relative density of the composite was 99.5%. The average hardness and fracture toughness values obtained were 1250 kg/mm2 and 10 MPa·m1/2, respectively.
Key Words
compound, nanostructure, sintering, mechanical properties
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