- grain boundary diffusion
- Смотри зернограничная диффузия.
Энциклопедический словарь по металлургии. — М.: Интермет Инжиниринг. Главный редактор Н.П. Лякишев. 2000.
Grain boundary strengthening — (or Hall Petch strengthening) is a method of strengthening materials by changing their average crystallite (grain) size. It is based on the observation that grain boundaries impede dislocation movement and that the number of dislocations within a … Wikipedia
Grain boundary — A grain boundary is the interface between two grains in a polycrystalline material. Grain boundaries disrupt the motion of dislocations through a material, so reducing crystallite size is a common way to improve strength, as described by the Hall … Wikipedia
Diffusion creep — refers to the deformation of crystalline solids by the diffusion of vacancies through their crystal lattice. Diffusion creep results in plastic deformation rather than brittle failure of the material. Diffusion creep is more sensitive to… … Wikipedia
Grain growth — refers to the increase in size of grains (crystallites) in a material at high temperature. This occurs when recovery and recrystallisation are complete and further reduction in the internal energy can only be achieved by reducing the total area… … Wikipedia
зернограничная диффузия — [grain boundary diffusion] 1. Диффузия по границам зерен. Коэффицент диффузии по границам зерен на несколько порядков больше, чем внутри зерна. Энергия активации зернограничной диффузия, Qз.г, значительно меньше, чем объемной Qоб. Qз.г / Qоб =… … Энциклопедический словарь по металлургии
Sintering — is a method used to create objects from powders. It is based on atomic diffusion. Diffusion occurs in any material above absolute zero but it occurs much faster at higher temperatures. In most sintering processes the powdered material is held in… … Wikipedia
Electromigration — is the transport of material caused by the gradual movement of the ions in a conductor due to the momentum transfer between conducting electrons and diffusing metal atoms. The effect is important in applications where high direct current… … Wikipedia
Creep (deformation) — For other uses, see Creep (disambiguation). v · d · e Materials failure modes Buckling … Wikipedia
Mylonite — An amphibolitic mylonite showing a number of (rotated) porphyroclasts: a clear red garnet left in the picture while smaller white feldspar porphyroclasts can be found all over. Location: the tectonic contact between th … Wikipedia
advanced ceramics — ▪ ceramics Introduction substances and processes used in the development and manufacture of ceramic materials that exhibit special properties. As is pointed out in the article ceramic composition and properties, ceramics are… … Universalium