NIOBIUM TARGET MATERIAL AND PREPARATION METHOD THEREFOR

摘要

Provided is a method for preparing a niobium target material, including: firstly hot extruding a niobium tube blank, and then processing an inner hole of the hot extruded niobium tube blank, thereby obtaining a niobium target material. During a process for preparing a niobium target material of the present invention, the surface of a niobium tube blank is firstly coated with a glass powder, and because the surface of the niobium tube blank is spray-coated with the glass powder, it has a better lubrication effect during an extrusion process, so that the surface quality of the niobium tube blank is better; the subsequent hot extrusion processing and heat treatment facilitate the refinement and homogenization of grains of the niobium tube blank; and finally, the extruded niobium tube blank is machined, and the inner hole of the niobium tube blank is bored and milled by special cutters, so that broken chips can be continuously discharged from the inner hole, avoiding the problem of the influence of accumulation of the broken chips in the inner hole on the surface processing of the inner hole, thereby obtaining a niobium target material with interior uniform grains and a relatively low value of surface roughness. Also provided is a niobium target material.