GATE XE · 2022 · XE-C
Question 62: Thermodynamics, Kinetics and Phase Transformations
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Question 62
XE-CNAT2 marksNeeds review
A spherical β particle nucleates from the α matrix on a non-deformable substrate δ, forming a contact angle of θ as shown in the schematic.
The value of
is ________. (Round off to three decimal places)
= Gibbs free energy change at the critical radius for homogeneous nucleation
= Gibbs free energy change at the critical radius for heterogeneous nucleationα-β interfacial energy = 0.4 J/m²
α-δ interfacial energy = 0.3 J/m²
β-δ interfacial energy = 0.02 J/m²
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2022XE-C
GATE XE 2022 · Paper 1
Engineering Sciences · Original paper archive
- Section
- Section XE-C
- Question type
- Numerical answer (NAT)
- Marks
- 2 marks
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