Abstract
Bulk tube conductors of Bi 1.84 Pb 0.4 Sr 2 Ca 2.2 Cu 3 O 10+x with addition of silver varying from 0 to 25 wt% (not reported earlier) were systematically studied using X-ray diffraction (XRD), scanning electron microscopy (SEM), electrical transport and a.c. susceptibility techniques. The tube conductors formed by cold isostatic pressing (CIP) of the powders obtained from spray drying method have been made successfully. It was found that Ag addition has not only affected the formation of the desired Bi-2223 phase and the microstructure of these large bulk tube samples thereby influencing on the critical current ( I c ),it also reduces the contact resistance to minimize the cryogen losses. These variations have been found to be Ag content dependent. An optimized value of 10 wt% Ag has been found to produce the best quality tubes showing reproducible I c value > 120 Amp at 77 K which is in general a requirement to energies of the cryogen free conventional/HTSC superconducting magnets below 20 K.
Similar content being viewed by others
References
Comert H, Altunbans M, Dzhafarov T D, Kucukomeroglu T, Asadov Y G and Karal H 1994Supercond. Sci. Technol. 7 284
Dorri D, Herd K, Laskaris E T, Tkaczyk J E and Lay K W 1991IEEE Trans. Magn. M-27 1858
Dou S X, Song K H, Liu H K, Sorrell C C, Apperley M H, Gouch A J, Savvides N and Hensley D W 1989Physica C 160 533
Dou S X, Liu H K, Apperley M H, Song K H and Sorrell C 1990Supercond. Sci. Technol. 3 138
Dzhafarov T D, Comert H, Altunbans M, Alver U, Kucukomeroglu T and Kopaya A Y 1995J. Alloys Comp. 221 246
Grivel J C and Flukiger R 1994Physica C 229 177
Grivon F, Leriche A, Cottevielle C, Kermarrec J C, Petitbon A and Fervier A 1991IEEE Trans. Magn. M-27 1866
Jin S, Tiefel T H, Sherwood R C, Van Dover T W, Davis M E, Kammlott G W and Fastnacht R A 1988Phys. Rev. B37 7850
Jones T E, Schindler J W, Ross R D, Thibado P M and Megimis W C 1990Phys. Rev. B41 7197
Maeda H, Tanaka Y, Fukutomi M and Asano T 1988Jpn. J. Appl. Phys. 27 L2109
Matsushita T, Suzuki A, Kishida T, Okuda M and Naito H 1994Supercond. Sci. Technol. 7 222
Michishita K, Ikuhara Y H and Kubo Y 1996Bismuth based high temperature superconductors (eds) H Maeda and K Tagano (New York, Basel, Hong Kong: Marcel Dekker Inc) p. 12
Ohkura K, Mukai H, Hikata T, Ueyama M, Kato T, Fujikami J, Muranaka K and Sato K 1994Advances in superconductivity VI (eds) T Fujita and Y Shiohara (Tokyo: Springer-Verlag) p. 735
Okada Met al 1996Jpn. J. Appl. Phys. 35 L623
Satou M, Yamada Y, Murase S, Kitamura T and Kamisada Y 1994Appl. Phys. Lett. 10 640
Savvides N 1990Physica C 165 371
Weinberger B R, Lynds L, Potrepka D M, Snow D B, Burila C T, Eaton H F and Lipolli E 1989Physica C 1 6191
Wu J Let al 1991IEEE Trans. Magn. M-27 1861
Yamada Y, Yanagiya T, Hasebe T, Jikihara K, Isluzuka M, Yasuhara S and Ishihara M 1993IEEE Trans. Appl. Supercond. AS-3 923
Yamada Y 1996Bismuth based high temperature superconductors (eds) H Maeda and K Togano (New York, Basel, Hong Kong: Marcel Dekker Inc.) p. 277
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Ekbote, S.N., Padam, G.K., Sharma, M. et al. Preparation and characterization of Ag-added Bi1.84Pb0.4Sr2Ca2.2Cu3O10+x bulk tube conductors for cryogen free superconducting magnet. Bull Mater Sci 24, 603–609 (2001). https://doi.org/10.1007/BF02704008
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02704008