Method of manufacture of ceramic materials

摘要

A method of manufacture of a ceramic material comprises the steps of preparing a melt of the ceramic materials, cooling the melt slowly through the freezing point of the material to initiate solidification, holding the melt at a temperature below the freezing point of the material whilst solidification progresses and characterised in that during solidification an ultrasonic field is applied to the melt. The melt composition may be selected to include an excess of one or more ceramic materials so as to produce a second phase dispersed in the solidified product during solidification. Also claimed is a ceramic material produced by the method described. The ceramic material may be a superconductor.