Calcium carbide superconducting wire preparation method
A superconducting wire, calcium carbide technology, applied in the usage of superconducting elements, superconducting devices, superconducting/high-conducting conductors, etc. Calcium superconducting performance is reduced and other problems, to achieve the effect of improving grain connection performance, high application value and improving superconducting performance
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Embodiment 1
[0022] This embodiment includes the following steps:
[0023] Step 1, placing graphene powder and calcium particles in a ball mill jar, and ball milling under the condition of feeding argon to obtain a mixture of graphene and calcium;
[0024] The rotating speed that described ball mill adopts is 600rpm, and the time is 0.5h, and the ratio of milling ball quality and graphene powder and calcium grain total mass is 2:1;
[0025] The atomic ratio of graphene and calcium in the mixture is 1:2;
[0026] Step 2. Put the mixture obtained in step 1 into a glove box and put it into a niobium tube, and then perform a drawing to obtain a single-core wire with a hexagonal cross-section. After the single-core wire is cut off, it is assembled into Copper-clad casing, and then carry out secondary drawing to obtain a multi-core wire with a circular cross section; the pass processing rate of the first drawing and the second drawing is 10%; the cross-section of the single-core wire is The di...
Embodiment 2
[0030] This embodiment includes the following steps:
[0031] Step 1, placing graphene powder and calcium particles in a ball mill jar, and ball milling under the condition of feeding argon to obtain a mixture of graphene and calcium;
[0032] The rotating speed that described ball mill adopts is 50rpm, and the time is 5h, and the ratio of milling ball quality and graphene powder and calcium grain total mass is 0.5:1;
[0033] The atomic ratio of graphene and calcium in the mixture is 1:0.2;
[0034] Step 2. Put the mixture obtained in step 1 into a glove box and put it into a copper tube, and then perform a drawing to obtain a single-core wire with a hexagonal cross-section. After the single-core wire is cut off, it is assembled into Copper-clad casing, and then carry out secondary drawing to obtain a multi-core wire with a circular cross-section; the pass processing rate of the first drawing and the second drawing is 20%; the cross-section of the single-core wire The dista...
Embodiment 3
[0038] This embodiment includes the following steps:
[0039] Step 1, placing graphene powder and calcium particles in a ball mill jar, and ball milling under the condition of feeding argon to obtain a mixture of graphene and calcium;
[0040] The rotating speed that described ball mill adopts is 200rpm, and the time is 2h, and the ratio of milling ball quality and graphene powder and calcium grain total mass is 1:1;
[0041] The atomic ratio of graphene and calcium in the mixture is 1:0.8;
[0042]Step 2. Put the mixture obtained in step 1 into a glove box and put it into a niobium tube, and then perform a drawing to obtain a single-core wire with a hexagonal cross-section. After the single-core wire is cut off, it is assembled into Copper-clad casing, and then carry out secondary drawing to obtain a circular multi-core wire in cross-section; the pass processing rate of the first drawing and the second drawing is 15%; the cross-section of the single-core wire The distance a...
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