| 摘要 |
<p>A Ti(C,N)-based cermet with excellent comprehensive mechanical property, a cutting tool using the cermet and a method for preparing a reinforced and toughened Ti(C,N)-based cermet. The cermet comprises a hard phase, a bounding phase, and a strengthening phase. The hard phase comprises one or more compounds that are selected from a group consisting of carbides, nitrides, carbonitrides and carbonitride solid solutions of Group IV, Group V and Group VI metals in the periodic table, and Ti is a main metallic element that forms the compounds. The bounding phase mainly comprises metals of the iron group. The strengthening phase comprises AlN nanowires and TiAlN compounds formed on junctions between the AlN nanowires and the hard phase compounds. The proportion of the total weight of the Al element in the AlN nanowires and TiAlN compounds based on the weight of the cermet is greater than 0% and equal to or less than 5%. The hardness, bending strength and fracture toughness of the cermet are improved.</p> |
