Preparation technology for gamma phase U-Mo alloy powder
A preparation process and technology of alloy powder, applied in the field of preparation of γ-phase U-Mo alloy powder, can solve the problems of high powder milling cost, easy environmental pollution, huge equipment, etc., to improve hydrogenation efficiency, reduce impurity content, and improve ball milling. The effect of efficiency
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Example Embodiment
[0013] Example 1
[0014] The devices used in this embodiment include a hydrogenation furnace, a planetary ball mill, a muffle furnace, a quartz tube vacuum sealing device, a low-oxygen glove box, and the like.
[0015] First, the U-2Mo alloy rod is vacuum annealed at 800°C for 2 hours. Grind the surface with metallographic sandpaper, remove the surface oxide film with dilute nitric acid, wash with absolute ethanol, quickly place it in a hydrogenation furnace, and store it in a vacuum. The hydrogenation furnace was heated to 60° C., and 0.2 MPa high-purity hydrogen was charged for hydrogenation. The hydrogenation holding time was 2 hours. Then vacuumize to 100Pa, continue to heat up to 350°C, keep it for 1 hour to dehydrogenate the uranium hydride. After dehydrogenation, when the temperature is lowered to 60°C, 0.2MPa high-purity hydrogen is introduced for hydrogenation, and the hydrogenation holding time is 2 hours. After the hydrogenation is completed, the sample is cooled with ...
Example Embodiment
[0017] Example 2
[0018] This embodiment is the same as Embodiment 1, except that the U-7Mo alloy rod is vacuum annealed at 900° C. for 4 hours. Grind with metallographic sandpaper, remove the oxide film on the surface with dilute nitric acid, wash with absolute ethanol, quickly place in a hydrogenation furnace, and store in a vacuum. The hydrogenation furnace was heated to 150°C, and 0.3MPa high-purity hydrogen was charged for hydrogenation. The hydrogenation holding time was 4 hours. Then evacuated to 60 Pa, continue to heat up to 450 ℃, keep for 2.5 hours to dehydrogenate the uranium hydride. After dehydrogenation, when the temperature is lowered to 160° C., 0.3 MPa high-purity hydrogen is introduced for hydrogenation, and the hydrogenation holding time is 4 hours. After the hydrogenation is completed, the sample is cooled with the furnace to obtain layered and granular uranium hydride-molybdenum biphasic products. Use star-shaped ball mill, agate tank and tungsten ball to mak...
Example Embodiment
[0020] Example 3
[0021] This embodiment is the same as embodiment 1, except that the U-10Mo alloy rod is vacuum annealed at 1000° C. for 6 hours. Grind with metallographic sandpaper, remove the oxide film on the surface with dilute nitric acid, wash with absolute ethanol, quickly place in a hydrogenation furnace, and store in a vacuum. The hydrogenation furnace was heated to 250°C, and 0.4MPa high-purity hydrogen was charged for hydrogenation. The hydrogenation holding time was 6 hours. Then evacuated to 30 Pa, continued to heat up to 550°C, and kept for 4 hours to dehydrogenate the uranium hydride. After dehydrogenation, when the temperature is lowered to 250°C, 0.4MPa high-purity hydrogen is introduced for hydrogenation, and the hydrogenation holding time is 6 hours. After the hydrogenation is completed, the sample is cooled with the furnace to obtain layered and granular uranium hydride-molybdenum biphasic products. Use star-shaped ball mill, agate tank and tungsten ball to m...
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