Patent ID: 11919072
Assignee: ZHENGZHOU RESEARCH INSTITUTE OF MECHANICAL ENGINEERING CO., LTD.
Field: Materials, metallurgy (Chemistry)
Classification: CPC B  C  Y | IPC B

Claim 0:
1. A preparation process of multi-component spherical alloy powder, characterized by adopting a plasma rotation electrode process (PREP) method to prepare multi-component spherical alloy powder, and the multi-component alloy includes at least one of refractory metals and compounds thereof, specifically including tungsten, molybdenum, tantalum, niobium, rhenium, tungsten carbide, and tantalum carbide;
wherein the preparation method thereof is as follows:
2.1 preparing a multi-component alloy rod; and
2.2 preparing multi-component spherical alloy powder by the PREP method with the alloy rod of step 2.1;
wherein a direct element mixing method is adopted to prepare the multi-component alloy rod in step 2.1, and the preparation method thereof is as follows:
4.1 conducting powder batching according to the element ratio of the target multi-component alloy, and then carrying out mechanical ball milling by a ball mill, adopting argon for protection in the ball milling process, and adding stearic acid as a process control agent;
4.2 under the protection of argon, putting the ball-milled powder material into a graphite mold, manually compacting the upper and lower ends with graphite pads when the powder material is put into the graphite mold, then putting the graphite mold together with the powder into a furnace cavity of a sintering furnace, and closing a furnace door for hot pressed sintering; and
4.3 treating the surface of the cylindrical multi-component alloy rod obtained by hot pressed sintering to make the dimensional accuracy and surface quality thereof meet the requirements of the PREP method.