Abstract
A study of the devitrification of glasses in the system Bi2O3-SrO-CaO-CuO has been carried out to assess the feasibility of producing useful superconducting material particularly in wire form. A wide range of glass compositions in this system has been devised, prepared and devitrified to produce glass-ceramics. DTA, XRD, EDS and density measurements have been made. The results of the study show that materials produced in this way are of low strength and contain voids, characteristic of glass-ceramics with low nucleation density. These defects must be overcome for useful materials to be produced.
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