ON THE MECHANISM OF DISSOLUTION OF MAGNESIUM IN AQUEOUS MAGNESIUM CHLORIDE SOLUTIONS II

Authors
  1. Casey, E.J.
  2. Bergeron, R.E.
  3. Nagy, G.D.
Corporate Authors
Defence Research Chemical Labs, Ottawa ONT (CAN)
Abstract
Measurements were made of the effect of pressure on the rate of dissolution of Mg at pH 2.0 in two concentrations of aqueous MgCl2. The induction period of the reaction was studied with a sensitive gas-measuring technique. X-ray diffraction patterns of insoluble reaction products were examined. Monovalent magnesium is an essential intermediate, the rate being controlled by H2 bubble growth through the gelatinous Mg(OH)2 film which remains on and protects the surface in 0.3 m-solution, and by bubble nucleation in 3 m-solution, in which the film is complexed away. Results are used to explain operational characteristics of magnesium water-activated primary batteries and magnesium dry cells.
Report Number
DRCL-158 — Previously accessioned as DSIS 62/01393
Date of publication
15 Apr 1961
Number of Pages
43
DSTKIM No
92-03853
CANDIS No
127182
Format(s):
Hardcopy;Originator's fiche received by DSIS

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