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Vol.50, No.11, 861 ~ 867, 2012
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| Title |
| Fabrication and Mechanical Properties of a Nanostructured TiN-AlN Composite by Pulsed Current Activated Sintering |
| 김원백 Won Baek Kim , 서창열 Chang Yul Suh , 노기민 Ki Min Roh , 임재원 Jae Won Lim , 심현보 Hyun Bo Shim , 박현국 Hyun Kuk Park , 손인진 In Jin Shon |
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| Abstract |
| A dense nanostructured TiN-AlN composite was prepared from high-energy ball milled TiN-AlN mixture powders by pulsed current activated sintering (PCAS). A highly dense TiN-AlN bulk composite was obtained within 2 minutes at 1500℃ with the simultaneous application of 80 MPa pressure and pulsed current. The fine crystalline structure of the TiN-AlN mixture, which was obtained by high-energy milling, was effectively maintained during PCAS and resulted in the enhancement of the mechanical properties. The micro hardness and fracture toughness of TiN-AlN composite were 1780 kg/mm2 and 5 MPa.m1/2, respectively. The mechanical properties were higher than monolithic AlN or TiN. |
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| Key Words |
| Composites, nanostructured materials, sintering, mechanical properties |
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