Abstract
A one‐end‐closed yttria‐stabilized zirconia (YSZ) tube, which is an oxygen ion conductor, was used to remove oxygen from molten copper. A thin layer of porous cermet electrode was deposited on the inner wall of the YSZ tube. The outer surface of the tube was in contact with the melt and the inner surface with a flowing reducing gas. Without applying external EMF, the melt was deoxidized by short‐circuiting the melt with the cermet electrode. The deoxidation process was analyzed and the rate controlling steps were identified. Digital simulation of the process was also conducted to give a detailed insight into the deoxidation process.
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