Abstract
Recycling is fundamental to the sustainable and economic use of natural resources. BulkRE–Ba–Cu–O ((RE)BCO, where RE is a rare earth element or Y) can be used for varietyof sustainable engineering and power sector applications. However, current costs ofproduction and relatively high process failure rates of up to 30% severely limit themanufacture of these materials for industrial use. It is necessary, therefore, to develop aneffective way of recycling failed (RE)BCO bulk samples to reduce both production costsand the consumption of the constituent rare earth elements. Failed, melt processed sampleshave a different chemical composition to that used initially in the precursor powder and, asa result, are generally scrapped, rather than re-processed. We report a novel method forre-processing failed (RE)BCO samples to restore their chemical composition. Failed bulksamples recycled using this process exhibit superconducting properties that are comparableto those of single-grain samples fabricated by conventional top seeded melt growth.
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