Measurement of hydrogen content in molten aluminum using proton conducting ceramic sensor.

Abstract

In order to carry out in-situ measurement of hydrogen content in molten aluminum, a galvanic cell type hydrogen sensor was constructed using CaZr0.9In0 .1O3- as a solid electrolyte. This sensor exhibited stable electromotive force (emf) corresponding to hydrogen content (S). A linear relation was found between emf and logarithm of S2. The hydrogen content determined by this sensor was in good agreement with that measured by Telegas method.