Consolidation and mechanical properties of nanostructured MoSi2-SiC-Si3N4 from mechanically activated powder by high frequency induction heated sintering

Abstract

A dense nanostructured MOSi2-SiC-Si3N4 composite was sintered by the high frequency induction heating method within 2 min from mechanically activated powder of MO2N, MO2C and Si. Highly dense MoSi2-SiC-Si3N4 composite was produced under simultaneous application of a 80 MPa pressure and the induced current. Mechanical properties and grain size of the composite were investigated. The average hardness and fracture toughness values obtained were 1420 kg/mm(2) and 4.5 MPa m(1/2), respectively. (C) 2010 Elsevier B.V. All rights reserved.