公开(公告)号：US20240316629A1

公开(公告)日：2024-09-26

申请号：US18574127

申请日：2021-08-04

申请人： NINGXIA ORIENT TANTALUM INDUSTRY CO., LTD.

发明人： Xiaoping Li ,  Yajun Zhang ,  Xingyu Li ,  Wanyong Tuo ,  Jing Ma ,  Lei Liu ,  Saili Che

IPC分类号： B22F1/142 ,  B22F1/05 ,  B22F1/065 ,  B22F1/145 ,  B22F9/02 ,  B22F9/04 ,  C22C27/02

CPC分类号： B22F1/142 ,  B22F1/05 ,  B22F1/065 ,  B22F1/145 ,  B22F9/023 ,  B22F9/04 ,  C22C27/02 ,  B22F2201/00 ,  B22F2202/13 ,  B22F2301/20 ,  B22F2304/10 ,  B22F2998/10 ,  B22F2999/00

摘要： A method for preparing tantalum-tungsten alloy powder includes the following steps: providing a tantalum-tungsten alloy ingot; repeatedly smelting the tantalum-tungsten alloy ingot; forging a product of the previous step; placing the product of the previous step in a hydrogen atmosphere to perform a hydrogenation heat treatment; mechanically crushing the product of the previous step to obtain a coarse powder; sieving, from the coarse powder, a powder having a particle size ranging from a μm to b μm, wherein a=10-20 and b=50-60; performing dehydrogenation heat treatment on the product of the previous step under vacuum; adding a magnesium powder to the product of the previous step to perform a deoxygenation heat treatment; and performing plasma spheroidization treatment on the product of the previous step such that the sphericity of the powder reaches more than 99%.