某合金中a为母相，卢为析出相，a/β界面能为0.5 J/，a/a界面能为0.6 J/。
①求β相在a相界面上形核(双球冠状)的接触角θ以及在界面上形核的f(θ)因子。
②设a相界面厚度δ和晶粒直径D之比δ/D=，利用第4题中所得的结果，求ln(/。(和分别为在界面和在晶粒内形核的形核率)

A.5
B.174.24.96:6088/Latex/latex.action?latex=bV57Mn0%3D'
C.6
D.174.24.96:6088/Latex/latex.action?latex=bV57Mn0%3D'
E.174.24.96:6088/Latex/latex.action?latex=MTBeey01fQ%3D%3D'
F.174.24.96:6088/Latex/latex.action?latex=SV97Mn0%3D'
G.174.24.96:6088/Latex/latex.action?latex=SV97M30%3D'
H.174.24.96:6088/Latex/latex.action?latex=SV97Mn0%3D'
I.174.24.96:6088/Latex/latex.action?latex=SV97M30%3D'

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