Izlaganje sa skupa

Transport Control in Crystal Growth from Solution

A. E. Nielsen ; Medicinsk-Kemisk Institut, University of Copenhagen, Copenhagen, Denmark

Sažetak

When a crystal grows or dissolves in a solution the matter has
to pass through a diffusion field. If the crystals do not move relative
to the surrounding liquid their growth or dissolution rate may
be controlled by diffusion through the solution. Crystals of micrometer
size or smaller in aqueous solution may be treated as sta:.
tionary in this respect. For larger crystals also convection may
have influence on the growth or dissolution rate. When a crystal
grows or dissolves by a transport controlled process no information
on the surface processes can be obtained from the empiricar Kmencs
except a lower limit to the rate. As transport processes are more
efficient for small crystals than for large ones, as compared to
surface processes, there are usually better possibilities for obtaining
information about the surface processes when studying small
crystals (fine precipitates) than with larger crystalline bodies (rotating
discs).

Ključne riječi

Hrčak ID:

194577

URI

https://hrcak.srce.hr/194577

Datum izdavanja:

5.11.1980.

Posjeta: 1.100 *