boundary diffusion

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• Diffusion creep — refers to the deformation of crystalline solids by the diffusion of vacancies through their crystal lattice.[1] Diffusion creep results in plastic deformation rather than brittle failure of the material. Diffusion creep is more sensitive to… …   Wikipedia

• grain boundary diffusion — Смотри зернограничная диффузия …   Энциклопедический словарь по металлургии

• Diffusion boundary layer — The diffusion boundary layer is a thin (usually on the scale of micrometers) layer of fluid which is not mixed with the main body of the fluid (or cellular arrangement in the case of organisms), by virtue of its proximity to the fluid s edge. In… …   Wikipedia

• Diffusion transistor — A diffusion transistor is any transistor formed by diffusing dopants into a semiconductor substrate. Diffusion transistors include some types of both bipolar junction transistors and field effect transistors. The diffusion process was developed… …   Wikipedia

• diffusion limitation — The boundary layer hypothesis; that the proliferation of cells in culture is limited by the rate at which some essential component (almost certainly a growth factor) diffuses from the bulk medium into the layer immediately adjacent to the plasma… …   Dictionary of molecular biology

• 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

• Fick's law of diffusion — Fick s laws of diffusion describe diffusion and can be used to solve for the diffusion coefficient D . They were derived by Adolf Fick in the year 1855. First law Fick s first law relates the diffusive flux to the concentration field, by… …   Wikipedia

• Fick's laws of diffusion — For the technique of measuring cardiac output, see Fick principle. Molecular diffusion from a microscopic and macroscopic point of view. Initially, there are solute molecules on the left side of a barrier (purple line) and none on the right. The… …   Wikipedia

• Radiative transfer equation and diffusion theory for photon transport in biological tissue — Photon transport in biological tissue can be equivalently modeled numerically with Monte Carlo simulations or analytically by the radiative transfer equation (RTE). However, the RTE is difficult to solve without introducing approximations. A… …   Wikipedia

• Robin boundary condition — In mathematics, the Robin (or third type) boundary condition is a type of boundary condition, named after Victor Gustave Robin (1855 1897) who lectured in mathematical physics at the Sorbonne in Paris and worked in the area of thermodynamics.… …   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