抄録
The effects of the amount of Pb additive and the cooling rate after sintering are investigated to develop the fabrication technique of Bi system'superconductor. The temperature in which no specimen is softened, 844°C, is selected as a sintering temperature and the growth of the superconducting phase is investigated. The most favorable content of Pb is 0.2% from the results of the measurement of the magnetic susceptibility and X-ray diffraction and SEM observation. From the results of the experiments to investigate the effect of cooling rate after the sintering, specimen which has the most slow cooling rate, 0.4°C/min, has most high Tc phase.
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