Materials Research Bulletin, Vol.30, No.7, 851-857, 1995
Mechanical-Properties of Hot Isostatically Pressed Zirconia(2 Mol-Percent Yttria)-Reinforced Molybdenum Disilicide Composite
Dense sintered composites of ZrO2(2 mol% Y2O3) and MoSi2 have been fabricated by hot isostatic pressing for 2 h at 1400 degrees C under 196 MPa. The ZrO2 particles in the composites consist of only t-ZrO2. There is no reaction between ZrO2 and MoSi2. Microstructures and mechanical properties are examined, in connection with increased ZrO2 content. The fracture toughness and bending strength of the composite with 40 mol% ZrO2 addition are 6.18 MPa ..m(1/2) and 1034 MPa, respectively.