BULK PROCESSING OF THE (BI,PB)2SR2CA2CU3O(Y) SUPERCONDUCTING OXIDE BY ORTHOGONAL ARRAY

被引：10

作者：

HONG, BS

MASON, TO

CHIANG, CK

FREIMAN, SW

HWANG, NM

机构：

[1] NATL INST STAND & TECHNOL, DIV CERAM, GAITHERSBURG, MD 20899 USA

[2] KOREA RES INST STAND & SCI, TAEJON, SOUTH KOREA

[3] NORTHWESTERN UNIV, SCI & TECHNOL CTR SUPERCONDUCT, EVANSTON, IL 60208 USA

来源：

APPLIED SUPERCONDUCTIVITY | 1993年 / 1卷 / 1-2期

关键词：

D O I：

10.1016/0964-1807(93)90387-H

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Processing of the Bi-2223 phase in the Bi-Pb-Sr-Ca-Cu-O system was investigated using the L18 orthogonal array, which made it possible to deal with seven independent processing variables simultaneously and to reduce the required number of experiments. The seven variables included five in composition and two in post heat treatment conditions-temperature and annealing times. T(c) tended to increase with increasing Sr and decreasing Bi contents within the composition range of the samples prepared in the experiment. The samples which showed almost single 110 K phase by X-ray diffraction were revealed to contain a considerable amount of amorphous phase. The liquid phase, which is known to enhance the formation of the 110 K phase, can reduce contact areas between grains of the Bi-2223 phase, thereby suppressing T(c).

引用

页码：109 / 119

页数：11

共 16 条

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