Abstract
AbstractTwo aspects are especially important in connection with mass transport in solids; these are the phenomenological description of the diffusion process and the discussion of the transport mechanism. In addition to the self‐diffusion of the constituent ions or atoms of a solid, which can be followed only with the aid of radioactive or stable isotopes, other known types of diffusion are the diffusion of trace elements, which can in principle be treated in the same way as self‐diffusion, and chemical diffusion, in which the diffusion partners differ in their chemical composition. Processes of this type are being increasingly studied with the electron beam microprobe. Regardless of the crystallinity and the type of bonding, problems concerned with diffusion in solids can be discussed from a single standpoint by slight adaptation to suit the particular situation in question.
Published Version
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