Fabrication of Al_2O_3/Cu Nanocomposites by Atmosphere-Controlled Sintering and Their Properties

摘要

The microstructure and mechanical property of hot-pressed Al_2O_3/Cu nanocomposites with a different temperature for atmosphere changing from H_2 to Ar have been studied. When the atmosphere changed from H_2 to Ar gas at 1450℃, 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℃, a more homogeneous microstructure and higher fracture strength was observed.