Preparation method of magnesium-yttrium alloy
An alloy and yttrium powder technology, which is applied in the field of magnesium-rare earth alloy preparation, can solve the problems of inability to form high-purity magnesium-yttrium alloy, generate toxic gas, endanger human health, etc., and achieve strong controllability of yttrium content, uniform distribution, and preparation easy effect
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Embodiment 1
[0038] Design ingredients according to Mg-20%Y alloy, and its preparation method is:
[0039] 1. Mix Mg powder and Y powder evenly by wet method according to the volume ratio of 1:1 and dry naturally. Weigh 200 grams of the mixed powder, and press the mixed powder on a tablet machine with a pressure of 50 MPa to form a round block. The density is 71.5%; the wet mixing method is: adding magnesium powder and yttrium powder to an appropriate amount of absolute ethanol, and mixing them evenly in agate and platinum (the same below);
[0040] 2. Dry the pressed round block in an oven and place it in a quartz tube, disperse and add 521 grams of magnesium particles around the block, then fill the quartz tube with high-purity argon (99.999%) three times, then vacuumize it and use quartz The plug seals the quartz tube, and the vacuum inside the quartz tube is 1Pa after vacuum sealing;
[0041] 3. Place the vacuum-sealed quartz tube in a vertical tube furnace that can tilt and swing, he...
Embodiment 2
[0046] Design ingredients according to Mg-25%Y alloy, and its preparation method is:
[0047] 1. Mix Mg powder and Y powder uniformly by wet method according to the volume ratio of 1:1 and dry naturally. Weigh 200 grams of the mixed powder, and press the mixed powder on a tablet machine with a pressure of 55 MPa to form a round block. The density of the block is 73.1%;
[0048] 2. Dry the pressed round block in an oven and place it in a quartz tube, disperse and add 376 grams of magnesium particles around the block, then fill the quartz tube with high-purity argon (99.999%) three times, then vacuumize it and use quartz The plug seals the quartz tube, and the vacuum inside the quartz tube is 0.8Pa after vacuum sealing;
[0049] 3. Place the vacuum-sealed quartz tube in a vertical tube furnace that can tilt and swing, heat up and melt, and raise the temperature from room temperature to 800°C at a rate of 5°C / min, and then keep it warm for 1.5h. The tube furnace is constantly s...
Embodiment 3
[0052] Design ingredients according to Mg-30%Y alloy, and its preparation method is:
[0053] 1. Mix Mg powder and Y powder uniformly by wet method according to the volume ratio of 1:1 and dry naturally. Weigh 200 grams of the mixed powder, and press the mixed powder on a tablet machine with a pressure of 55 MPa to form a round block. The density of the block is 73.3%;
[0054] 2. Dry the pressed round block in an oven and place it in a quartz tube, disperse and add 281 grams of magnesium particles around the block, then fill the quartz tube with high-purity argon (99.999%) three times, then vacuumize it and use quartz The plug seals the quartz tube, and the vacuum inside the quartz tube is 0.5Pa after vacuum sealing;
[0055] 3. Place the vacuum-sealed quartz tube in a vertical tube furnace that can tilt and swing, heat up and melt, and raise the temperature from room temperature to 820°C at a rate of 5°C / min, and then keep it warm for 1.5h. The tube furnace is constantly s...
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