一种难熔高熵合金粉末及其制备方法
The high-energy ball milling method for preparing refractory high-entropy alloy powder solves the problems of element volatilization and oxidation in existing technologies, and realizes efficient and low-cost alloy powder preparation, which is applicable to aerospace, nuclear reactor and other fields.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
- Filing Date
- 2023-12-25
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies for preparing refractory high-entropy alloys suffer from element volatilization losses, component segregation, porosity, and looseness defects. Furthermore, mechanical stirring and grinding in powder metallurgy methods lead to powder oxidation or contamination, making alloying process difficult to control, costly, and resulting in unstable performance.
Refractory high-entropy alloy powder was prepared by high-energy ball milling. The alloying of high-melting-point metals was achieved through solid-state diffusion. Anhydrous ethanol and n-heptane were used as solvents. Mixing and ball milling were carried out under vacuum to ensure elemental uniformity and low oxidation. Near-spherical powder was sieved to control the particle size to within 10 μm.
This method achieves uniform and efficient preparation of refractory high-entropy alloy powders, reduces impurity intrusion rate, simplifies preparation steps, lowers costs, and facilitates large-scale industrial applications.
Smart Images
Figure CN117758124B_ABST