| Title |
Rapid Sintering of Nanostructured (Mo,W)Si2 and its Mechanical Properties |
| Authors |
강현수(Hyun Su Kang); 손인진(In Jin Shon) |
| DOI |
https://doi.org/10.3365/KJMM.2014.52.8.623 |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
Compounds; Nanostructured materials; Sintering; Mechanical properties |
| Abstract |
Abstract: Nanocrystalline materials have received much attention as advanced engineering materials due to improved physical and mechanical properties. As nanomaterials undoubtedly possess high strength and hardness, as well as excellent ductility and toughness, more attention has been paid to the application of nanomaterials. Nanopowders of Mo, W and Si were made by high-energy ball milling. A dense nanostructured (W,Mo)Si2 compound was sintered by the pulsed current activated combustion method within 2 minutes from mechanically activated powders of Mo, W and Si. A highly dense (Mo,W)Si2 compound was produced under simultaneous application of a 80 MPa pressure and the pulsed current. Mechanical properties and microstructure were investigated. The hardness and fracture toughness of (Mo,W)Si2 were 1242 kg/mm2 and 4.3 MPa.m1/2, respectively. The mechanical properties were better than monolithic MoSi2 or WSi2. |