Abstract
The interface melting process of melt-texturedY Ba2Cu3O7 induced by Ag foils has been investigated in view of developing a large area weldingtechnology. The influence of the processing methodology and the initial microstructureof the melt-textured ceramics has been considered. High temperature quenchexperiments have shown that the interface molten region can become inhomogeneousdue to microstructural features of the initial ceramics such as the pre-existingcracks. It is found that while thick Ag foils () can lead to severe liquid Ag migration, the artificial welds performed with thinner foils() in non-oxygenated melt texturedY Ba2Cu3O7 samples free of cracks are of high quality in large areas. High critical currents throughwelded interfaces have been demonstrated by means of Hall probe magnetic imaging andBiot–Savart inversion calculations.
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