Korean Journal of Metals and Materials (대한금속재료학회지)

The Korean Institute of Metals and Materials (대한금속재료학회)
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Fabrication and Properties of Nanostructured $3Ti-2Al_2O_3$ Composites by a Pulsed Current Activated Sintering Method

펄스전류 활성 소결법에 의한 나노구조의 $3Ti-2Al_2O_3$ 복합재료 제조 및 특성

  • Park, Na-Ra (Division of Advanced Materials Engineering and the Research Center of Hydrogen and Fuel Cell, Engineering College, Chonbuk National University) ;
  • Shon, In-Jin (Division of Advanced Materials Engineering and the Research Center of Hydrogen and Fuel Cell, Engineering College, Chonbuk National University)
  • 박나라 (전북대학교 신소재공학부 수소연료전지연구센터) ;
  • 손인진 (전북대학교 신소재공학부 수소연료전지연구센터)
  • Published : 2013.11.05
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Abstract

Nanopowders of $TiO_2$ and Al were prepared from a high energy ball milling method to fabricate sintered $3Ti-2Al_2O_3$ composites with nanostructures. A dense nanocrystalline $3Ti-2Al_2O_3$ composite was consolidated by a pulsed current activated sintering method from the mechanically activated powder. Consolidation of dense $3Ti-2Al_2O_3$ 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 $7 MPa{\cdot}m^{1/2}$, respectively.

Keywords

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