발간논문

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Vol.51, No.11, 821 ~ 829, 2013
Title
Fabrication and Properties of Nanostructured 3Ti-2Al2O3 Composites by a Pulsed Current Activated Sintering Method
박나라 Na Ra Park , 손인진 In Jin Shon
Abstract
Nanopowders of TiO2 and Al were prepared from a high energy ball milling method to fabricate sintered 3Ti-Al2O3 composites with nanostructures. A dense nanocrystalline 3Ti-2Al2O3 composite was consolidated by a pulsed current activated sintering method from the mechanically activated powder. Consolidation of dense 3Ti-Al2O3 composites with a relative density of up to 99% was accomplished under the combined contribution of a pulsed current and a mechanical pressure of 60 MPa. The hardness and fracture toughness of the fabricated composites were 1207 kg/mm2 and 7 MPa￥m1/2, respectively.
Key Words
composite, 3Ti-2Al2O3, sintering, nanomaterials, mechanical properties
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