Home > Blossary: Defects in Materials
Defects determine many properties of materials (those properties that we call "structure sensitive properties"). Even properties like the specific resistance of semiconductors, conductance in ionic crystals or diffusion properties.

Category: Engineering

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Created by: Naveed

Number of Blossarys: 5

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Dislocations in real materials are most commonly neither pure edge nor pure screw in their character, but are mixed dislocations whose Burgers vectors lie at an intermediate angle to the local ...

Domain: Materials science; Engineering; Category: Metallurgy; Mechanical engineering

The reduction in diameter that occurs as a sample material is subjected to tensile stresses. Necking, in engineering or materials science, is a mode of tensile deformation where relatively large ...

Domain: Materials science; Engineering; Education; Category: Metallurgy; Mechanical engineering; Knowledge

In the original concept of Volterra, the Burgers' vector of a crystal dislocation is a translation vector of the crystal, that is, a vector that connects atom positions so that the crystal can be ...

Domain: Materials science; Engineering; Education; Category: Metallurgy; Mechanical engineering; Knowledge

Point defects are where an atom is missing or is in an irregular place in the lattice structure. Point defects include self interstitial atoms, interstitial impurity atoms, substitutional atoms and ...

Domain: Materials science; Engineering; Education; Category: Metallurgy; Mechanical engineering; Knowledge

Solid materials have pores in them, sometimes these pores are almost microscopic in size, and sometimes they're very visible. Porosity is a measure of how much air or liquid can be absorbed by ...

Domain: Materials science; Engineering; Education; Category: Metallurgy; Mechanical engineering; Knowledge

Dislocations in which the Burgers vector is perpendicular to the dislocation line. Dislocations in real crystals rarely have a pure edge character. Their Burgers vectors lie at various angles to ...

Domain: Materials science; Engineering; Education; Category: Metallurgy; Mechanical engineering; Knowledge

Segregation in materials refers to the enrichment of a material constituent at a free surface or an internal interface of a material. In a polycrystalline solid, a segregation site can be a ...

Domain: Materials science; Education; Engineering; Category: Metallurgy; Knowledge; Mechanical engineering

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