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Questions and Answers
Which of the following is a result of casting molten material?
Which of the following is a result of casting molten material?
- Grain boundaries (correct)
- Stacking faults
- Lattice distortion
- Substitutional defect
What is an imperfection in a crystal that involves several atoms/ions and occurs over a finite volume of the crystalline material?
What is an imperfection in a crystal that involves several atoms/ions and occurs over a finite volume of the crystalline material?
- Interstitial defect
- Extended defect (correct)
- Substitutional defect
- Vacancy
What is lattice distortion?
What is lattice distortion?
- A point defect produced when an atom is placed into the crystal at a site that is normally not a lattice point
- An atom or an ion missing from its regular crystallographic site
- Imperfections, irregularities, and defects present in real crystals (correct)
- A point defect produced when an atom is removed from a regular lattice point and replaced with a different atom
