@inproceedings{1b5744b8725d4569bf868cb761b3e1b4,
title = "Fabrication of Bi-2212/SrSO4 composite superconductors by melting powder mixtures",
abstract = "We fabricated Bi-2212/SrSO4 composite superconductors by the melt casting process and evaluated the effects of the powder mixing method and melting temperature on their microstructure and superconducting properties. In the melt casting process, the Bi-2212 powders were mixed with SrSO4 by hand-mixing (HM) and planetary ball milling (PBM) and then the powder mixtures were melted at 1100°C-1200°C, solidified, and annealed. We found that the powder mixture prepared by PBM was finer and more homogeneously mixed than that prepared by HM, resulting in more homogeneous microstructure and smaller SrS04 and second phases after annealing, The critical current (I c) also varied significantly with the powder mixing method and the melting temperature. The Ic of the annealed rod prepared by PBM was 193 A at 77 K when melted at 110°C, which is higher than that of the annealed rod prepared by HM (132 A). This enhancement in the Ic value for the former is considered to be due to its more uniform microstructure.",
keywords = "Bi-2212, Critical current, Planetary ball milling, SrSO, Transition temperature",
author = "Kim, \{Kyu Tae\} and Jang, \{Seok Hern\} and Lim, \{Jun Hyung\} and Park, \{Eui Cheol\} and Jinho Joo and Lee, \{Hoo Jeong\} and Hong, \{Gye Won\} and Kim, \{Chan Joong\} and Kim, \{Hye Rim\} and Hyun, \{Ok Bae\}",
year = "2007",
doi = "10.4028/0-87849-419-7.1597",
language = "English",
isbn = "0878494197",
series = "Materials Science Forum",
publisher = "Trans Tech Publications Ltd",
number = "PART 2",
pages = "1597--1600",
booktitle = "Progress in Powder Metallurgy - Proceedings of the 2006 Powder Metallurgy World Congress and Exhibition (PM 2006)",
edition = "PART 2",
note = "2006 Powder Metallurgy World Congress and Exhibition, PM 2006 ; Conference date: 24-09-2006 Through 28-09-2006",
}