INVESTIGADORES
DI PRINZIO Carlos Leonardo
artículos
Título:
Measurement of self-diffusion on ice surface
Autor/es:
NASELLO, OLGA BEATRIZ; DI PRINZIO, CARLOS LEONARDO
Revista:
SCRIPTA MATERIALIA
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Año: 2007 vol. 56 p. 1071 - 1073
ISSN:
1359-6462
Resumen:
The self-diffusion coefficient on ice surface has been measured by studying the formation of grain boundary (GB) grooves on thesurface of polycrystalline ice samples annealed at temperatures between 2 and 15 C. Samples were encapsulated with silicone oil,10 enabling the assumption that the formation of the groove takes place only by surface diffusion. Photographs of polycrystalline icesamples viewed between crossed-polaroid filters were used to determined the time taken by the groove to grow to a width of approximately10 lm. It was shown that ice surface has a self-diffusion coefficient very close to those measured in supercooled water.
