par Ponslet, André 
;Bariaux, Daniel
Référence Acta Metallurgica, 12, 5, page (593-599)
Publication Publié, 1964-05
;Bariaux, Daniel Référence Acta Metallurgica, 12, 5, page (593-599)
Publication Publié, 1964-05
Article révisé par les pairs
| Résumé : | Copper single crystals thermally etched in vacuum, show a hill and valley surface topography, formed by facets which correspond to (100) and (111) planes. The surface structure formed by these two facets is complemented by a third facet of high indices which is in general bent. The orientation of these facets has been determined by examination in the electron microscope of double replicas and by interpretation of X-ray diagrams. The formation of these facets is ascribed to an anisotropy of the oxygen adsorption on the different crystalline faces. The geometrical equilibrium of the topography is obtained from the minimum of the total free energy of the surface. Experimental results show a value γ100/γ111 = 1.08. The influence of the oxygen partial pressure on the growth kinetics of the facets has also been studied. © 1964. |
