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Crystallographic point defects

https://en.wikipedia.org/wiki/Crystallographic_defect

Crystalline solids exhibit a periodic crystal structure. The positions of atoms or molecules occur on repeating fixed distances, determined by the unit cell parameters. However, the arrangement of atoms or molecules in most crystalline materials is not perfect. The regular patterns are interrupted by crystallographic defects.

Point defects are defects that occur
only at or around a single lattice point


crystal-lattice

crystal lattice (RHEED), instrument.com.cn

diamond-crystal-lattice

diamond crystal lattice (RHEED), instrument.com.cn


vacancy

vacancy point defect


vac

vacancy point defect in 3d, created via BLC Blender addon

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Crystallographic defects

https://en.wikipedia.org/wiki/Crystallographic_defect

Crystalline solids exhibit a periodic crystal structure. The positions of atoms or molecules occur on repeating fixed distances, determined by the unit cell parameters. However, the arrangement of atoms or molecules in most crystalline materials is not perfect. The regular patterns are interrupted by crystallographic defects.

Three-dimensional macroscopic or bulk defects,
such as pores, cracks, inclusions


cracks

high-magnification optical micrograph showing intergranular cracks with characteristic
manganese sulfideĀ and oxide inclusions in the crack path of a section
across the radial cracks in the heat-treated part
Hydrogen Embrittlement Cracking in a Batch of Steel Forgings


defect

cracks and inclusions bulk defects in 3d, created via BLC Blender addon

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