MSE Video 59: 2D Defects: Surfaces or Interfaces

2D defects: Surfaces or interfaces

[@kumarprateek1061]

Thanku sir for sharing your knowledge with us

[@avusulagnaneshwar948]

which surface has more energy among these Free surface ,Grain boundary & Twin boundary

[@saqibrahi1297]

free surface

[@akithjabed553]

sir vacancy concentration.. how it changes didnt understood

[@introductiontomaterialsscience]

There are sources and sinks of vacancies in the crystal. Free surfaces, grain boundaries and edge dislocations all act as both sources and sinks of vacancies. If an atom from a regular site join these defects they act as source of vacancy.The vacancy concentration increases. If an atom from these sites leave an fill a nearby vacancy they act as sinks of vacancy. Vacancy concentration decreases.

[@emphaticsciencetutorials6354]

Nice