Which among the following equation satisfies heterogeneous nucleation? – McqOptions

MCQOPTIONS

1.	Which among the following equation satisfies heterogeneous nucleation?
A.	Ghet = V*( Gv Gs) + A Gd
B.	Ghet = V*( Gv Gs) Gd
C.	Ghet = V*( Gv Gs) + A + Gd
D.	Ghet = V*( Gv Gs) + A
Answer» B. Ghet = V*( Gv Gs) Gd

Discussion

No Comment Found

Related MCQs

Nucleation on dislocations may also be assisted by solute segregation which can raise the composition of the matrix to nearer that of the precipitate.
In FCC crystals the a/2*[110] unit dislocations can dissociate to produce a ribbon of stacking fault. Which among the following is as an example of the same?
A coherent nucleus with a negative misfit can reduce the critical volume free energy by forming a region of _________
At very small driving forces, when activation energy barriers for nucleation are high, the highest nucleation rates will be produced by grain corner nucleation.
The relative magnitudes of the heterogeneous and homogeneous volume nucleation rate is given as 0.5. Calculate the factor C/C1 (the number of atoms on heterogeneous sites relative to the number within the matrix)? (Consider exp ( G*(hom) G*(het)/kT) to be 1)
What is special about the dark-field electron microscope micrograph?
Excess vacancies are retained during the quench if the age hardening alloys are retained from______
If the G* heterogeneous is given as 5kJ/mol and G* homogeneous is given as 10kJ/mol. Calculate the shape factor?
Calculate the shape factor if the angle tends to 90 degree?
The ability of the grain boundary to reduce the value of critical free energy G* depends on