A preparation method of bi-2223/agau superconducting tape with high current carrying and low thermal conductivity
A bi-2223, superconducting tape technology, applied in the use of superconducting elements, superconducting devices, superconducting/high-conducting conductors, etc. , low density of strip core wire, etc., to achieve the effect of low thermal conductivity, high current-carrying performance and low manufacturing cost
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Embodiment 1
[0027] This embodiment includes the following steps:
[0028]Step 1. In a glove box with an oxygen volume content of 7.5% and a balance gas of argon with a mass purity of 99.995%, a vibrating table is used to install a tube under the condition of a vibration frequency of 40 Hz, and the Bi-2223 precursor powder is passed through a metal funnel Fill the AgAu alloy tube with one end closed, and start the vibrating table to vibrate the AgAu alloy tube, so that the Bi-2223 precursor powder is filled into the AgAu alloy tube, and then the other end of the AgAu alloy tube is sealed to obtain the first tube. Composite; the Bi-2223 precursor powder contains Bi-2212 and CaCuO 2 , and Bi-2212 and CaCuO 2 The molar ratio of the AgAu alloy tube is 1:1, the outer diameter of the AgAu alloy tube is 12mm, the wall thickness is 1mm, and the mass content of the Au element in the AgAu alloy tube is 5%;
[0029] In step 2, the first tube-loading composite body obtained in step 1 is drawn with a...
Embodiment 2
[0034] This embodiment includes the following steps:
[0035] Step 1. In a glove box with an oxygen volume content of 7.5% and a balance gas of argon with a mass purity of 99.995%, a vibrating table is used to install a tube under the condition of a vibration frequency of 40 Hz, and the Bi-2223 precursor powder is passed through a metal funnel Fill the AgAu alloy tube with one end closed, and start the vibrating table to vibrate the AgAu alloy tube, so that the Bi-2223 precursor powder is filled into the AgAu alloy tube, and then the other end of the AgAu alloy tube is sealed to obtain the first tube. Composite; the Bi-2223 precursor powder contains Bi-2212 and CaCuO 2 , and Bi-2212 and CaCuO 2 The molar ratio of the AgAu alloy tube is 1:1, the outer diameter of the AgAu alloy tube is 12mm, the wall thickness is 1.1mm, and the mass content of the Au element in the AgAu alloy tube is 5%;
[0036] In step 2, the first tube-loading composite body obtained in step 1 is drawn wit...
Embodiment 3
[0041] This embodiment includes the following steps:
[0042] Step 1. In a glove box with an oxygen volume content of 7.5% and a balance gas of argon with a mass purity of 99.995%, a vibrating table is used to install a tube under the condition of a vibration frequency of 40 Hz, and the Bi-2223 precursor powder is passed through a metal funnel Fill the AgAu alloy tube with one end closed, and start the vibrating table to vibrate the AgAu alloy tube, so that the Bi-2223 precursor powder is filled into the AgAu alloy tube, and then the other end of the AgAu alloy tube is sealed to obtain the first tube. Composite; the Bi-2223 precursor powder contains Bi-2212 and CaCuO 2 , and Bi-2212 and CaCuO 2 The molar ratio of the AgAu alloy tube is 1:1, the outer diameter of the AgAu alloy tube is 12mm, the wall thickness is 1.5mm, and the mass content of the Au element in the AgAu alloy tube is 5%;
[0043] In step 2, the first tube-loading composite body obtained in step 1 is drawn wit...
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