Method for preparing Mg0.8CUO.2B2 superconduct bulk material
A technology of mg0.8cu0.2b2 and superconducting blocks, which is applied in the usage of superconducting elements, the manufacture/processing of superconducting devices, superconducting devices, etc., can solve the problems of complex reaction process, large energy consumption, and large investment in equipment , to achieve the effect of rapid reaction process, energy saving and low investment
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[0013] The present invention adopts powders of Mg and B. First, the powders of Mg, Cu and B are weighed in a stoichiometric ratio of 0.8:0.2:2, and then 1% of the weight of the weighed Mg is added. Then put the weighed Mg, Cu powder and B powder in a ball mill for grinding and mixing. The speed of the ball mill is 200 revolutions per minute, and the time for ball milling is 2 hours. The grinding balls are mixed with Mg, Cu, and B powders. The total weight ratio of the materials is 35-40:1. Press the milled powder into a sheet or column blank under a pressure of 150Mpa, and put it into a vacuum furnace. The vacuum furnace is evacuated or filled with inert gas, and preheated at a heating rate of 30℃ / min. Use an arc to ignite the billet at the top of the billet at ℃. When the ignition temperature reaches 700°C, the arc is extinguished. The reaction is allowed to continue for 3 seconds. The adiabatic temperature is 1461°C. Mg can be obtained by natural cooling to room temperature. 0.8...
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