Abstract
Of the many families of high-temperature superconductor, only the properties of those discovered prior to 1989 — Y—Ba—Cu—O, Tl—Ba(Sr)—Ca—Cu—O, and Bi(Pb)—Sr—Ca—Cu—O — have been studied extensively.1 Deformation tests have been performed on YBa2Cu3Ox (Y—123), YBa2Cu4Ox (Y—124), TlBa2Ca2Cu3Ox (Tl—1223), Bi2Sr2CuOx (Bi—2201), Bi2Sr2CaCu20x (Bi—2212), and (Bi,Pb)2Sr2Ca2Cu3Ox (Bi—2223).2–13 The tests have revealed that plasticity is generally limited in these compounds and that the rate-controlling diffusional kinetics for creep are very slow. Nevertheless, hot forming has proved to be quite successful for fabrication of bulk high-temperature superconductors, so long as deformation rates are low or large hydrostatic stresses are applied.13–20
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Goretta, K.C. et al. (1995). Deformation of High-Temperature Superconductors. In: Bradt, R.C., Brookes, C.A., Routbort, J.L. (eds) Plastic Deformation of Ceramics. Springer, Boston, MA. https://doi.org/10.1007/978-1-4899-1441-5_36
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DOI: https://doi.org/10.1007/978-1-4899-1441-5_36
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