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A vacancy is a point defect where an atom is added to the lattice site.
False
It is possible to create a material that is completely free of vacancies.
False
The equilibrium number of vacancies in a material decreases with increasing temperature.
False
A self-interstitial occurs when an atom is missing from the crystal lattice.
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For a solid solution to form, the crystal structure must change when solute atoms are added to the host material.
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Dislocations can only be one-dimensional defects in a crystal lattice.
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Edge dislocation involves an extra portion of a plane of atoms that terminates outside the crystal.
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The Burgers vector for an edge dislocation is perpendicular to the lattice distortion.
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Most dislocations in crystalline materials are either pure edge or pure screw dislocations.
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Dislocations under a microscope are observed as bright lines due to their nature.
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