一种难熔高熵合金块体及制备方法
By employing a sintering method combining high current density pulsed current and high pressure with an ultra-fast heating rate, the problems of long preparation time and low density of refractory high-entropy alloy bulk materials have been solved, achieving efficient and low-cost preparation of refractory high-entropy alloy bulk materials with high metallurgical bonding strength and excellent corrosion resistance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- UNIV OF SCI & TECH BEIJING
- Filing Date
- 2023-11-09
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies are insufficient to prepare refractory high-entropy alloy bulk materials with high density and high microstructure uniformity in a short period of time, and also suffer from high production costs and low efficiency.
A method combining high current density pulsed current and high pressure with an ultra-fast heating rate was used to rapidly sinter refractory high entropy alloy powder in a sintering device. A sintering mold composed of graphite foil and insulating corundum tube was used to improve temperature uniformity and prevent contamination, thus producing a high-density refractory high entropy alloy bulk.
High density and uniform microstructure of refractory high-entropy alloy blocks were achieved in a short time, improving the metallurgical bonding strength, corrosion resistance and oxidation resistance of the material, and reducing production time and energy consumption.
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Figure CN117531997B_ABST