Flash evaporation method for producing superconductor powder.

摘要

An apparatus and method for preparing particles of superconductor material includes a container for holding a prepared solution of barium, copper and a rare earth element dissolved in nitric acid. A nozzle is provided to release an aerosol spray of the solution onto the smooth surface of a preheated plate. Contact of the sprayed solution with the hot surface evaporates the sprayed solution to vaporise water in the solution and form an atomically mixed, homogeneous precipitate. A scraper is provided to remove the precipitate from the surface of the plate, and this precipitate is then denitrated and then calcined in a furnace.