Method for preparing high-purity powder material, application thereof, and double-phase powder material

Abstract

The present disclosure provides a method for preparing a high-purity powder material, an application thereof, and a double-phase powder material. The high-purity powder material is prepared through an 'atomization comminuting process and de-phasing method'. The preparation method comprises the following steps: firstly preparing intermediate alloy powders with first-phase particles wrapped by a second-phase matrix through an atomization comminuting process. Impurity elements are enriched into the second-phase matrix and the first-phase particles are purified during the solidification of the intermediate alloy powders; By removing the second-phase matrix in the intermediate alloy powders, a high-purity target powder material originated from the original first-phase particles can be obtained. The preparation method of the present disclosure has the characteristics of a simple process, easy operation, and low cost, and can be used to prepare nano-level, sub-micron-level, and micro-level multiple high-purity powder materials, which has a good application prospect in catalytic materials, powder metallurgy.