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Problems on the mechanically induced polymorphic transformation
Author(s) -
Senna M.
Publication year - 1985
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170200216
Subject(s) - metastability , grinding , materials science , phase (matter) , atmospheric pressure , thermodynamics , transformation (genetics) , chemical physics , crystallography , mineralogy , chemistry , chemical engineering , metallurgy , physics , organic chemistry , engineering , biochemistry , meteorology , gene
Some typical experimental results are presented and discussed phenomenologically on the topics; (i) the transformations which are readily carried out with the aid of mechanical stimulation but hardly by simple heating (PbO, ZnS); (ii) formation of metastable phases under the influence of mechanical stresses from the phase which is stable at room temperature under the atmospheric pressure (CdS, CdSe); (iii) pseudo‐equilibrium between polymorphs during grinding (CaCO 3 ).
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