Search results
Results from the WOW.Com Content Network
Atomic diffusion in polycrystalline materials is therefore often modeled using an effective diffusion coefficient, which is a combination of lattice, and grain boundary diffusion coefficients. In general, surface diffusion occurs much faster than grain boundary diffusion , and grain boundary diffusion occurs much faster than lattice diffusion .
العربية; বাংলা; Беларуская; Беларуская (тарашкевіца) Bosanski; Dansk; Ελληνικά; Español; فارسی
At the 2017 Consumer Electronics Show, Markforged unveiled the Metal X, which is a 3D printer capable of 3D printing metal parts at a low cost, under $100k. [8] The process has been referred to as ADAM (Atomic Diffusion Additive Manufacturing) technology and it has an in-process laser inspection for dimensional accuracy. [5]
Bahasa Indonesia; Interlingua; IsiXhosa ... Diffusion is the net movement of anything ... atomic diffusion is used to model the stellar atmospheres of chemically ...
Each atomic species can be given its own intrinsic diffusion coefficient ~ and ~, expressing the diffusion of a certain species in the whole system. The interdiffusion coefficient D ~ {\displaystyle {\tilde {D}}} is defined by the Darken's equation as:
The Kirkendall effect is the motion of the interface between two metals that occurs due to the difference in diffusion rates of the metal atoms. The effect can be observed, for example, by placing insoluble markers at the interface between a pure metal and an alloy containing that metal, and heating to a temperature where atomic diffusion is reasonable for the given timescale; the boundary ...
A diffusionless transformation, commonly known as displacive transformation, denotes solid-state alterations in crystal structures that do not hinge on the diffusion of atoms across extensive distances. Rather, these transformations manifest as a result of synchronized shifts in atomic positions, wherein atoms undergo displacements of distances ...
Atomic diffusion on the surface of a crystal. The shaking of the atoms is an example of thermal fluctuations. Likewise, thermal fluctuations provide the energy necessary for the atoms to occasionally hop from one site to a neighboring one. For simplicity, the thermal fluctuations of the blue atoms are not shown.