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.
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See lessCorrect answer is in the range of 11.5-12.5 @Digbijaya igit described it best. Thank you. Some peripheral lines related to this topic: Critical radius, r*= -2γ/(ΔHf ΔT/ Tm)
Correct answer is in the range of 11.5-12.5 digbijaya igit igit described it best. Thank you.
Some peripheral lines related to this topic:
Critical radius r* = -2y / delta Gv Where delta Gv (driving force)= (delta H * delta T)/ Tm Substituting the values we got Critical radius is 11.28 nm
Critical radius r* = -2y / delta Gv
Where delta Gv (driving force)= (delta H * delta T)/ Tm
Substituting the values we got Critical radius is 11.28 nm
See lessHi, For this problem you need to remember certain formulas or you can derive using energy balance equation. Here is solution given in this video at 10:24 https://www.youtube.com/watch?v=Kr4qL54E-zs&list=PLFS_xICJ_zVPwqvTZ6QToink9EOBilj-x&index=9
Hi,
For this problem you need to remember certain formulas or you can derive using energy balance equation.
Here is solution given in this video at 10:24
https://www.youtube.com/watch?v=Kr4qL54E-zs&list=PLFS_xICJ_zVPwqvTZ6QToink9EOBilj-x&index=9
See less