کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9841622 | 1525794 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Preparation of Bi-2223/Ag tapes with pre-annealed precursor powders
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Several kinds of precursor powders with varied phase assemblages were prepared by pre-annealing the commercial BSCCO 2223 powders in pure Ar, O2 or mixed gas (7.5% O2 + 92.5% Ar) at elevated temperatures, and then were made into monofilament Bi-2223/Ag tapes. Annealing the powders in pure Ar at 700 °C for 10 h greatly retarded the 2223 phase formation at the initial reaction stage, consequently lowered the Jc value of the fully processed Bi-2223/Ag tapes. The sample fabricated by using the precursor powder pre-annealed in 7.5% O2 showed the best Jc property (25 kA/cm2, 77 K, 0 T). The microstructures of the samples made from various precursor powders were examined, which were correlated to their different phase formation behaviors and transport properties.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica C: Superconductivity and its Applications - Volumes 426â431, Part 2, 1 October 2005, Pages 1138-1142
Journal: Physica C: Superconductivity and its Applications - Volumes 426â431, Part 2, 1 October 2005, Pages 1138-1142
نویسندگان
C.H. Jiang, H. Kumakura,