The tin-rich intermediate phases in the alloys of tin with cadmium, indium and mercury

✍ Scribed by G.V Raynor; J.A Lee

• Publisher: Elsevier Science
• Year: 1954
• Weight: 527 KB
• Volume: 2
• Category: Article
• ISSN: 0001-6160
• DOI: 10.1016/0001-6160(54)90197-2

✦ Synopsis

New experiments on the crystal structures of the tm-rrch mtermedrate phases ~s,,_r~, ~a,+=~, Ben-Ho and @m,_~e are briefly reported. All four phases crystallize in the simple hexagonal structure.

The latter may be regarded as formed from the white tin structure by the simple displacement, along the c-axis, of one of the two body-centred tetragonal sub-lattices into which the structure can be divided, followed by a slight modification of the interatomic distances. The form of the first Brillouin zone for the -rsn_rn type of structure is considered, and it is shown that the most probable zone is bounded by planes of the type (11.0) and (10.1) ; overlapping of electrons across the (11.0) planes accounts for the dependence of the axial ratio on electron: atom ratio. The factors affecting the formation of the hexagonal phases are discussed from the point of view of a suggestion by Schubert that the appropriate Brillouin zone for white tin is bounded by ( 220) and ( 121) planes. LA PHASE INTERMEDIAIRE, RICHE EN ETAIN, DES ALLIGES D'ETAIN AVEC LE CADMIUM, L'INDIUM ET LE MERCURE On rapporte brievement de nouvelles experiences sur la structure cristalline des phases intermediairesiriches en etain, -rsn_rn, 7an_n g , hexarronale simole. Cette derniere oeut *