Iron-based superconductor preparation method based on cold isostatic pressing and directional solidification technology
A technology of directional solidification and cold isostatic pressing, which is applied in cable/conductor manufacturing, electrical components, circuits, etc., and can solve problems such as poor grain connectivity, insufficient powder density, and current consumption
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Embodiment 1
[0024] (1): Ingredients. Mix 7.8g of iron powder with a purity higher than 99.99%, 11.25g of arsenic powder, 0.62g of cobalt powder and 10.3g of barium flakes in a glove box under inert gas protection conditions to obtain mixed raw materials.
[0025] (2): Ball milling. Put the mixed raw materials into a ball mill tank, seal it and put it into a ball mill for ball milling for 8 hours at a ball milling speed of 350 rpm, and mix the various raw materials evenly.
[0026] (3): Silicone sleeve seal. Put the uniformly mixed powder into a cylindrical silica gel sleeve with an inner diameter of 15 mm and a thickness of 3 mm under vacuum or inert gas protection conditions and seal it well.
[0027] (4): cold isostatic pressing. Put the sealed silicone sleeve with the powder into the cold isostatic pressing equipment, pressurize the original powder into a high-density shaped billet. Cold isostatic pressing pressure 140MPa, holding time 20min.
[0028] (5): Directional solidificati...
Embodiment 2
[0032] (1): Ingredients. Mix 7.8g of iron powder with a purity higher than 99.99%, 11.25g of arsenic powder, 0.62g of cobalt powder and 10.3g of barium flakes in a glove box under inert gas protection conditions to obtain mixed raw materials.
[0033](2): Ball milling. Put the mixed raw materials into a ball mill tank, seal it and put it into a ball mill for ball milling for 8 hours at a ball milling speed of 350 rpm, and mix the various raw materials evenly.
[0034] (3): Silicone sleeve seal. Put the uniformly mixed powder into a cylindrical silica gel sleeve with an inner diameter of 15 mm and a thickness of 3 mm under vacuum or inert gas protection conditions and seal it well.
[0035] (4): cold isostatic pressing. Put the sealed silicone sleeve with the powder into the cold isostatic pressing equipment, pressurize the original powder into a high-density shaped billet. Cold isostatic pressing pressure 160MPa, holding time 20min.
[0036] (5): Directional solidificatio...
Embodiment 3
[0040] (1): Ingredients. Mix 7.8g of iron powder with a purity higher than 99.99%, 11.25g of arsenic powder, 0.62g of cobalt powder and 10.3g of barium flakes in a glove box under inert gas protection conditions to obtain mixed raw materials.
[0041] (2): Ball milling. Put the mixed raw materials into a ball mill tank, seal it and put it into a ball mill for ball milling for 8 hours at a ball milling speed of 350 rpm, and mix the various raw materials evenly.
[0042] (3): Silicone sleeve seal. Put the uniformly mixed powder into a cylindrical silica gel sleeve with an inner diameter of 15 mm and a thickness of 3 mm under vacuum or inert gas protection conditions and seal it well.
[0043] (4): cold isostatic pressing. Put the sealed silicone sleeve with the powder into the cold isostatic pressing equipment, pressurize the original powder into a high-density shaped billet. Cold isostatic pressing pressure 160MPa, holding time 30min.
[0044] (5): Directional solidificati...
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