Fabrication of Al2O3/Cu nanocomposites by atmosphere-controlled sintering and their properties

Abstract

The microstructure and mechanical property of hot-pressed Al 2O3/CU nanocomposites with a different temperature for atmosphere changing from H2 to Ar have been studied. When the atmosphere changed from H2 to Ar gas at 1450°C, the hot-pressed composite was characterized by inhomogeneous microstructure and low fracture strength. On the contrary, when the atmosphere changed at a lower temperature of 1100°C, a more homogeneous microstructure and higher fracture strength was observed.