Metallurgical Engineering > GATE 2019 > Nucleation
The critical radius (in nm, rounded off to one decimal place) of nickel nucleus during solidification at 1673 K is _______.
Given: Enthalpy of fusion of nickel = 2.65 × 10⁹ J⋅m⁻³;
Liquid-solid interfacial energy = 0.5 J⋅m⁻²; and Equilibrium melting temperature of nickel = 1728 K.
Given: Enthalpy of fusion of nickel = 2.65 × 10⁹ J⋅m⁻³;
Liquid-solid interfacial energy = 0.5 J⋅m⁻²; and Equilibrium melting temperature of nickel = 1728 K.
Explanation
Correct : 11.8
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