Consolidation of Cu based amorphous powder by hot pressing method

Amorphous Cu50Zr40Ti10 powder was fabricated in the particle size range <50 mu m by gas atomisation method. Gas atomised Cu50Zr40Ti10 amorphous powder exhibits the glass transition temperature T-g of 629.5 K and the crystallisation temperature T-x of 693.2 K respectively. The gas atomised Cu50Zr40Ti10 amorphous powder possesses a high supercooled liquid region Delta T-x of 63.7 K suitable for being hot pressed. In addition, the Cu50Zr40Ti10 amorphous powders were consolidated by hot pressing method based on an L-9(3(4)) orthogonal design. The optimum consolidation condition for the Cu50Zr40Ti10 amorphous powder is first precompacted under the pressure of 75 MPa, and then consolidated under the pressure of 450 MPa at the temperature of 380 degrees C respectively. The significance of three factors is examined by the analysis of variance for the density and thermal conductivity respectively. The effect of three factors on the density and thermal conductivity is also discussed.