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A Convenient Correlation for Prediction of Binary Eutectics Involving Organic Explosives
Author(s) -
Chapman Robert D.,
Fronabarger John W.
Publication year - 1998
Publication title -
propellants, explosives, pyrotechnics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.56
H-Index - 65
eISSN - 1521-4087
pISSN - 0721-3115
DOI - 10.1002/(sici)1521-4087(199802)23:1<50::aid-prep50>3.0.co;2-e
Subject(s) - thermodynamics , chemistry , melting point , eutectic system , explosive material , physics , crystallography , organic chemistry , microstructure
The best predictor of the extent of eutectic formation between explosive ingredients is the difference between their reciprocal melting temperatures(r 2 =0.838 among 74 examples). Though thermodynamic relationships such as van't Hoff's equation have come to be recognized in recent years as a basis for predicting eutectic behavior, a quantitative correlation to melting point differences as the major contributor to this behavior seems to have been unrecognized in the energetic materials community. The correlation for binary compositions has the form: ln[ X (solute)/ X (solvent)]=−4077.04Δ(T m −1 )−0.0979, where solvent is defined as the lower‐melting component. This correlation is derived on the basis of thermodynamic theory with simple approximations.