Preparation method of Fe (Se, Te) superconducting wire
A technology of superconducting wire and mixed powder, which is applied in the usage of superconducting elements, superconducting devices, superconducting/high-conducting conductors, etc., can solve the problems of limited oxygen annealing, shorten the ball milling time and meet the performance requirements , Simple and effective with low effect
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Embodiment 1
[0040] This embodiment includes the following steps:
[0041] Step 1. In a glove box filled with argon, place the mixed powder in an agate mortar and grind for 30 minutes; : 0.5:0.05:0.05 molar ratio composition;
[0042] The iron powder is reduced iron powder with a mass purity of 99.99%, the mass purity of the selenium powder, tellurium powder and silver powder is 99.99%, and the mass purity of the selenium dioxide powder is 99.9%;
[0043] Step 2. In a glove box filled with argon, put the ground mixed powder in Step 1 into a tableting mold and seal it, then take it out and place it on a tableting machine for pressing to obtain doped Fe- Se-Te green body; the pressure of the pressing treatment is 10MPa, and the time is 10min;
[0044] Step 3, taking out the doped Fe-Se-Te green body obtained in step 2 from the tableting mold, placing it in a quartz tube, sealing it with a hydrogen-oxygen flame, and then placing it in a sintering furnace for sintering. Obtain Fe(Se,Te) sup...
Embodiment 2
[0057] This embodiment includes the following steps:
[0058] Step 1. In a glove box filled with argon, place the mixed powder in an agate mortar and grind for 30 minutes; :0.5:0.01:0.01 molar ratio composition;
[0059] The iron powder is reduced iron powder with a mass purity of 99.99%, the mass purity of the selenium powder, tellurium powder and silver powder is 99.99%, and the mass purity of the selenium dioxide powder is 99.9%;
[0060]Step 2. In a glove box filled with argon, put the ground mixed powder in Step 1 into a tableting mold and seal it, then take it out and place it on a tableting machine for pressing to obtain doped Fe- Se-Te green body; the pressure of the pressing treatment is 10MPa, and the time is 10min;
[0061] Step 3, taking out the doped Fe-Se-Te green body obtained in step 2 from the tableting mold, placing it in a quartz tube, sealing it with a hydrogen-oxygen flame, and then placing it in a sintering furnace for sintering. Obtain Fe(Se,Te) super...
Embodiment 3
[0071] This embodiment includes the following steps:
[0072] Step 1. In a glove box full of argon, place the mixed powder in an agate mortar and grind for 60 minutes; :0.2:0.01:0.01 molar ratio composition;
[0073] The iron powder is reduced iron powder with a mass purity of 99.999%, the mass purity of the selenium powder, tellurium powder and silver powder is 99.999%, and the mass purity of the selenium dioxide powder is 99.99%;
[0074] Step 2. In a glove box filled with argon, put the ground mixed powder in Step 1 into a tableting mold and seal it, then take it out and place it on a tableting machine for pressing to obtain doped Fe- Se-Te green body; the pressure of the pressing treatment is 5MPa, and the time is 2min;
[0075] Step 3, taking out the doped Fe-Se-Te green body obtained in step 2 from the tableting mold, placing it in a quartz tube, sealing it with a hydrogen-oxygen flame, and then placing it in a sintering furnace for sintering. Obtain Fe(Se,Te) superco...
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