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Heterogeneous nucleation differs from others due to ________

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Heterogeneous nucleation differs from others due to ________

(a) Faster rate of nucleation

(b) Supercooling

(c) Wetting

(d) Growth

The question was asked in homework.

My doubt stems from Nucleation, Growth and Segregation, Recovery, Recrystallisation and Grain Growth topic in portion Mechanical Working Processes & Phase Transformations of Engineering Material & Metallurgy

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Right answer is (c) Wetting

Easiest explanation: In heterogeneous nucleation, the liquid metal must be wetted with the foreign particles. Wetting is defined as the spontaneous spreading of one phase over the surface of another. Very little or no supercooling occurs in this type of nucleation.

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