Solid-solution powder, method to prepare the solid-solution powder, ceramic using the solid-solution powder, method to prepare the ceramic, cermet powder including the solid-solution powder, method to prepare the cermet powder, cermet using the cermet powder and method to prepare the cermet

摘要

Disclosed are a solid-solution powder, a method for preparing the solid-solution powder, a ceramic using the solid-solution powder, a method for preparing the ceramic, a cermet powder including the solid-solution powder, a method for preparing the cermet powder, a cermet using the cermet powder and a method for preparing the cermet. According to the present invention, the problem of low toughness due to high hardness that conventional cermets (especially TiC or Ti(CN) based cermet) have is resolved because a complete solid-solution phase without core/rim structure can be obtained as a microstructure, and wherein further increased the hardness as well as the toughness, thereby substantially and considerably increasing general mechanical properties of materials using the ceramic or the cermet and thus substituting WC-Co hard material and allowing manufacturing of cutting tools with high hardness and toughness, and wherein the complete solid-solution phase without core/rim structure can be obtained even in the reducing and carburizing condition of low temperature of 1300 °C or less and relatively short time, thereby increasing an efficiency of the overall process.