Table 2 The value of parameters used in the calculation the ratio of critical nucleation energy of γ and β-BT2.
Parameter | Symbol [unit] | Value |
|---|---|---|
Ti-O coordination number of crystal | Zγ, Zβ | 6.15, 5.27 |
Ti-O coordination number of undercooled melt | Z 1 | 5.496 − 4.361 × 10−4T |
Enthalpy of fusion | \({\rm{\Delta }}{H}_{{\rm{f}}}^{{\rm{\gamma }}}\), \({\rm{\Delta }}{H}_{{\rm{f}}}^{{\rm{\beta }}}\) [kJ·mol−1] | 81.4, 71.21 |
Density (crystal) | ργ, ρβ [kg·m−3] | 5.12, 4.7357 |
Density (melt) | ρ1 [kg·m−3] | 4.82-0.0004T57 |
Molar mass | M [g/mol] | 313.13 |
Surface tension of melt | σ1 [mN·m−1] | 349-0.03(T − Tf)63 |
