Precipitation process for forming Bi-Pb-Sr-Ca-Cu-O superconducto

Details Precipitation process for forming Bi-Pb-Sr-Ca-Cu-O superconducto Precipitation process for forming Bi-Pb-Sr-Ca-Cu-O superconducto

1990-07-11

1992-09-15

Clingman, A. Lionel

Superconductor technology: apparatus, material, process

High temperature , per se

Having tc greater than or equal to 150 k

505737, 505782, 505738, 252521, 423593, H01L 3912

Patent

active

051478480

ABSTRACT:
A process for preparing powder of high temperature oxide superconductors of Bi-Pb-Sr-Ca-Cu-O type. In an aqueous solution of nitrate salts of Bi, Pb, Sr, Ca, and Cu metals, an appropriate ratio of triethylamine/oxalic acid was added to form a coprecipitate. Through the process of calcination at a temperature in the range of 750.degree. C. to 800.degree. C. and sintering at a temperature of 860.degree. C., a uniform and fine powder superconductive metal oxide having a critical temperature of 110K is obtained as the final product.

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Shei et al., "Coprecipitation Process for the Preparation of Superconductive Bi-Sr-Ca-Cu Oxides", Mat. Lett. vol. 9, No. 2, Jan. 3, 1990.
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