Resumo

STOLER, D.; LADO, M.; AGUIRRE VARELA, G  e  DI PRINZIO, C. L.. Flattening of a scratch on ice pure surface. An. AFA [online]. 2019, vol.30, n.2, pp.31-35. ISSN 0327-358X.

In this work the evolution of the width of a line (groove) traced on the surface of a sample of bi-crystalline ice, by means of a metallic sheet, in a direction almost orthogonal to the grain edge (BG) was studied. To perform the measurements, the sample of ice submerged in ultrapure silicone oil was maintained at -5 ^oC to prevent evaporation from occurring and isolate the effect of surface diffusion in this way. Photographs of the groove were periodically taken, approximately for 100 hours, using a camera coupled to an optical microscope. From these images the evolution of the line width was studied. Finally, the ice self-diffusion coefficient was determined at -5 ^oC.

Palavras-chave : surface; diffusion; ice.

        · resumo em Espanhol     · texto em Espanhol     · Espanhol ( pdf )