Defects in materials

Описание: 0:00 demos for context about why we might care about defects and imperfections in materials
9:42 calculating vacancy concentration and fraction from vacancy activation energy.
11:33 example calculation of vacancy fraction
16:36 vacancy amounts in metals
17:31 vacancy vs self-interstitials in metals
21:00 point defects in ceramics (Frenkel defect vs Schottky defect)
23:21 atoms growing on surfaces (edge growth)
26:36 non-stoichiometric materials with defects
27:58 how vacancies relate to thermal expansion
33:00 alloys
35:55 determining whether dopant is substitutional or interstitial
37:18 aliovalent substitution and associated defects (oxygen vacancies in YSZ)