ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

The application of microanalysis for the measurement of critical current density at the electrolysis of cryolite fusions

K. Matiašovský, V. Daněk, and M. Malinovský

Slovak Academy of Sciences, Bratislava

Abstract: A microanalysis was applied for the measurement of the effect of the Al₂O₃ concn. on the crit. c.d. (Jcr) in molten Na₃AlF₆-Al₂O₃. Comparison of the results with data in literature shows that this method can be applied for rapid orientation measurements. In various phases of the electrolysis the wettability of graphite is strongly increased at cathodic polarization and decreased at anodic polarization. The relation of Jcr to the concn. of Al₂O₃ is illustrated by a graph. At 6% (by wt.) of Al₂O₃ Jcr was 6 amp./cm.2 The max. deviation of a measurement was 0.7 amp./cm.2

Full paper in Portable Document Format: 173a211.pdf (in Slovak)

Chemical Papers 17 (3) 211–216 (1963)