Abstract
Ceramic processing of YBa 2Cu 3O x-based superconductors and process-related problems are described. Conditions for calcination, sintering and for microstructural development are important considerations for obtaining the superconducting properties. We examine different forming techniques for preparing superconducting components with different sizes, shapes and configurations. We also identify and discuss six problem areas related to (i) the incomplete decomposition of BaCO 3 precursor, (ii) the slow oxidation kinetics of YBa 2Cu 3O x ceramics, (iii) the sensitivity to water of the YBa 2Cu 3O x phase, (iv) the reactivity of the YBa 2Cu 3O x phase with substrates and co-firing materials, (v) the low critical-current density in YBa 2Cu 3O x bulk ceramics, and (vi) the low mechanical strength of YBa 2Cu 3O x ceramics.
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