Abstract
A study was made of the effect of the temperature and time of decomposition of a salt product on the phase composition, microstructure, and magnetic susceptibility of a Bi - Pb - Sr -Ca - Cu - O superconducting ceramics. Holding the powder at 570°C slows the formation of the high-temperature phases, while increasing the decomposition temperature to 840°C and increasing the time of decomposition at 815°C have the same effect on the concentrations of the phases Ca2PbO4, CuO, and (CaSr)2CuO3. The data obtained on magnetic susceptibility, together with the results of microscopic and x-ray spectral studies, made it possible to evaluate the effect of the morphology of the grains and the grain boundaries on the superconductivity of the sintered specimens.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
T. L. Ward, S. W. Lyons, T. T. Kodas, et al., “Characteristics of Bi - Pb - Cr - Ca - Cu - O powders produced by aerosol decomposition and their rapid conversion to the highT c phase,”Physica C,200, 31–42 (1992).
Y. K. Sun and W. Y. Lee, “Preparation of high purity 110 K phase in the Bi(Pb) - Sr - Ca - Cu - O superconductor using modified citrate process,”Physica C,212, 37–42 (1993).
Q. Li, K. Brodersen, N. A. Hjuler, and T. Ereltoft, “Critical current density enhancement in Ag-sheathed Bi-2223 superconducting tapes,”Physica C,217, 360 (1993).
G. Aldika, A. F. Alekseev, P. Bedike, et al., “Production and study of the properties of a Bi(Pb)-HTSC ceramics,” in:Electronic Structure and Properties of Refractory Metals and Compounds [in Russian], Institute for Problems of Material Science, National Academy of Sciences of Ukraine, Kiev (1995), p. 93.
M. Wang, G. Xiong, X. Tang, and Z. Hong, “The formation mechanism of Bi2Sr2Ca2Cu3O6 superconducting phase,”Physica C,210, 413–416 (1993).
G. Xiong, M. Wang, X. Fan, and X. Tang, “The reaction process of the Bi - Sr - Ca - Cu - O system and the forming mechanism of the 2212 superconducting phase,”Appl. Phys.,A-56, 99–102 (1993).
P. Strobel and T. Fournier, “Phase diagram studies in the Bi(Pb)- Sr - Ca - Cu - O system,”J. Less-Common Met.,164/165, 519–525 (1990).
P. Badica, G. Aldica, A. F. Alexeev, et al., “Influence of pyrolization temperature on final characteristics of BSCCO ceramics produced by spray-frozen, freeze-drying method,”J. Mat. Sci. Lett.,15, 187–188 (1996).
G. Aldica, G. M. Mironova, N. C. Popa, et al., “Time-resolved neutron diffraction study of the superconducting phase formation process in the Bi(Pb) - Sr - Ca - Cu- O system,”J. Supercond.,1, Nos. 1/2, 101–107 (1993).
J. S. Luo, N. Merchant, V. A. Maroni, et al., “Kinetics and mechanism of the Bi(Pb)2Sr2Ca2Cu3O10 formation reaction in silver-sheathed wires,”Appl. Supercond.,1, Nos. 1/2, 101–107 (1993).
Author information
Authors and Affiliations
Additional information
Translated from Poroshkovaya Metallurgiya, Nos. 5–6(413), pp. 91–100, May–June, 2000.
Rights and permissions
About this article
Cite this article
Bedike, V.V., Morozov, V.V., Aldika, G. et al. Effect of process parameters in the decomposition of a cryochemical salt product of the Bi - Pb - Sr - Ca - Cu - O system on the structure and properties of a ceramics. Powder Metall Met Ceram 39, 295–302 (2000). https://doi.org/10.1007/BF02684682
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF02684682