Abstract
The electrochemical deoxidation of ZrSiO4 pellets in molten CaCl2 at 850°C in an argon atmosphere was studied. The sintered ZrSiO4 pellet was cathodically polarized against a graphite counter electrode under a constant applied potential. XRD and EDX analyses revealed that ZrSiO4 became ZrSi. Reduction from ZrSiO4 to ZrSi started at the location on the surface around the cathodic current-collector Mo wire and extended to the entire surface. As the electro-deoxidation reaction continued, the oxygen content in the product decreased.
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