The peculiarities of structure, superconductive (SC) and mechanical propert
ies variations of melt-textured Y, Nd, (Y,Nd)-123-based and Y,Sm-123-based
with additions of Ag high-temperature superconductors (HTS) vs. high-pressu
re (2-5 Cpa) high-temperature (750-1500 degreesC)-time (10-30 min) treatmen
t conditions are presented. The process of high-pressure-high-temperature (
E-IP-HT) sintering of SC YBa2Cu3O7-delta ceramics from YBa2Cu3O7-delta powd
er is also discussed. The HP-HT treatment and sintering enable us to manufa
cture practically poreless HTS with improved mechanical characteristics for
a short time. High pressure heating allows the superconductive characteris
tics of investigated Y-123 structural type HTS to he preserved or increased
. (C) 2001 Elsevier Science B.V. All rights reserved.