interstitial atom
chemistry
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crystal defects
- In crystal: Crystal defects
…them; such atoms are called interstitials. Thermal vibrations may cause an atom to leave its original crystal site and move into a nearby interstitial site, creating a vacancy-interstitial pair. Vacancies and interstitials are the types of defects found in a pure crystal. In another defect, called an impurity, an atom…
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hydrogen absorption in metals
- In hydrogen: Reactivity of hydrogen
These are often called interstitial hydrides because, in many cases, the metallic crystal lattice merely expands to accommodate the dissolved hydrogen without any other change.
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