Process for removing a copper mold from a molded body

Details Process for removing a copper mold from a molded body Process for removing a copper mold from a molded body

1993-06-23

1994-11-08

Fiorilla, Christopher A.

Superconductor technology: apparatus, material, process

Processes of producing or treating high temperature...

With material removal by etching, laser ablation, or...

156656, 156666, 264317, 505450, H01L 3912, C23F 100

Patent

active

053627121

ABSTRACT:
In the process for producing molded bodies from precursors of oxidic high-temperature superconductors a copper mold of the desired shape which encloses a solidified bismuth strontium calcium cuprate melt is treated with a solution of a soluble compound containing sulfate anions, an aqueous mineral acid and an oxidizing agent until the copper mold is dissolved. A protective layer of at least one of strontium sulfate or calcium sulfate is formed on the solidified melt.

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patent: 5215961 (1993-06-01), Rayne et al.

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