Impurity-enhanced dissolution studies on NaCl crystals
- 1 April 1972
- journal article
- Published by IOP Publishing in Journal of Physics D: Applied Physics
- Vol. 5 (4), 774-776
- https://doi.org/10.1088/0022-3727/5/4/318
Abstract
Dissolution studies were carried out on NaCl crystals, some pure and some doped with various impurities. It was observed that etch pits associated with beaks are obtained only in NaCl crystals doped with CaCl2, if the etchant reported by Hari Babu and Bansigir is used. Of the 26 poisons studied with methyl alcohol as base, only a few of the cadmium and lead salts are capable of giving beaks in NaCl:CaCl2, whereas with the other poisons etch pits without beaks are obtained. These investigations reveal that the poison, the solvent and the impurity decorating the dislocation line influence the formation of beaks in NaCl crystals. The substructure of the grain boundaries in NaCl:CaCl2 crystals has been revealed for the first time, by employing the etching technique. Different types of grain boundaries, junctions between the boundaries and dislocation networks have been recorded.Keywords
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