Fabrication of Composite in the System ZrO2(2Y)/WSi2 Part 2 Electrical and Mechanical Properties of Laminated Materials with Three Layers (特集 ニュ-コンポジット材料2) Fabrication of Composite in the System ZrO_2(2Y)/WSi_2 Part 2-Electrical and Mechanical Properties of Laminated Materials with Three Layers-
Well-densified composites with the compositions of ZrO<SUB>2</SUB>(2Y)/WSi<SUB>2</SUB>=60/40 and 80/20 mol% have been fabricated by hot isostatic pressing for 2 h at 1500°C and 196 MPa. Electric resistivities (ρ) between both composites change drastically; the former and latter composites correspond to the metallic and insulating materials, respectively. They are strongly dependent on the textures. Laminated materials with the compositions of ZrO<SUB>2</SUB>(2Y)/WSi<SUB>2</SUB> =(60/40)/(80/20)/(60/40) mol% have been able to be prepared by the same technique. Overall electric resistivities in the perpendicular and parallel directions for the interfaces are determined to be ρ⊥≈1×10<SUB>11</SUB> and ρ//≈1×10<SUB>-4</SUB> Ω⋅cm, respectively. The residual stress as much as ≈200 MPa is induced in the interfaces. The fracture toughness (K<SUB>IC</SUB>) is much affected by the residual stress.
粉体および粉末冶金 43(4), 426-432, 1996-04-15
Japan Society of Powder and Powder Metallurgy