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RESEARCH TRAINING NETWORK 2000-2001

MODELS FOR ENTHALPY AND SPECIFIC HE AT DIFFERENCE BETWEEN UNDERCOOLED LIQUID AND SOLID MIXTURE

A generał parametrie description ofthe enthalp\ difference between undercooled liquid

and stał)le crystal phases is given l>\ SGT1Caccordingto:

AH = A + CT + Dr + et³ + FT¹

>\hich gices a specific lieat difference e\pressed as:

-2

AC. = C + 2DT + 3ET' + FT

Kubaschewski model AC'^S = 2DT + 3ET‘ + FT² (C=0)

l-s

Linear AC/T) model AC., = C + 2DT (E=F=0)

Dubay-Ramachandrarao model AC'^S(T) = (l/2)C_p(T_m)[3T_m²T²- T_m³T³