Is it possible for two screw dislocations of same sign to annihilate each other explain your answer?
It is possible for two screw dislocations of opposite sign to annihilate one another if their dislocation lines are parallel.
What is the difference between the angle of Burgers vector and dislocation line in edge dislocation?
Explanation: The angle between Burgers vector and dislocation line in edge dislocation is 90 degrees while the angle between burger vector and dislocation line for screw dislocation is 0 degree.
What are imperfections or defects?
Crystalline imperfections (or defects) are always present. In addition, impurity atoms are always present. Point defects exist by definition as a point (0 – dimensional) and include vacancies, interstitial atoms, and substitutional impurity atoms.
What are crystal defects and how are they classified?
There are basic classes of crystal defects: point defects, which are places where an atom is missing or irregularly placed in the lattice structure. Point defects include lattice vacancies, self-interstitial atoms, substitution impurity atoms, and interstitial impurity atoms.
What are the different types of crystal defects?
- Point defects (vacancies, interstitial defects, substitution defects)
- Line defect (screw dislocation, edge dislocation)
- surface defects (material surface, grain boundaries)
- Substitutional – one atom is replaced by as different type of atom.
- Interstitial – extra atom is inserted into the lattice structure at a.
What do you mean by crystal defects?
Crystal defect, imperfection in the regular geometrical arrangement of the atoms in a crystalline solid. These imperfections result from deformation of the solid, rapid cooling from high temperature, or high-energy radiation (X-rays or neutrons) striking the solid.
What type of defect is commonly found in NaCl?
Schottky defect type
What type of social metric defect is shown by NaCl?
Schottky defect
What type of stock you metric defect is shown by NaCl?
In stoichiometric defects, NaCl exhibits Schottky defect and not Frenkel defect. NaCl, cation has large size thus it can not fit into voids so thus not show Frankel defect.