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Journal of the Chemical Society, Chemical Communications


Journal of the Chemical Society, Chemical Communications was published between 1972 - 1995.

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Paper

J. Chem. Soc., Chem. Commun., 1978, 273 - 274, DOI: 10.1039/C39780000273


The role of stress in nucleus development during dehydration of certain alums

Andrew K. Galwey and Giulio G. T. Guarini


Microscopic examination of dehydration nuclei developed on cleaved faces {111} of potassium alum and a mixed K(Al, Cr) alum revealed a characteristic progressive sequence of surface textural changes and crack propagation before and during the initiation and growth of the product phase; these surface modifications are interpreted as evidence that local stresses may be a more important contributory factor in nucleation than has hitherto been recognized.