The alloys of the aluminiums-iridium system have been studied in the complete range of composition. About 35 samples were prepared by induction melting and, after an annealing treatment, were subjected to chemical analysis, specific gravity determination, X-ray and micrographic examinations. The existence has been deduced of, at least the following phases: Al5Ir, Al375Ir, Al3Ir (hexagonal, Na3As type), Al2,7Ir (cubic, a deformed AuZn3 type structure) and AlIr (cubic CsCl type). The results are briefly discussed.
Referenze Bibliografiche
[1] R. FERRO, «J. less-common Met.», 1, 424 (1959).
[2] R. FERRO e G. RAMBALDI, «J. less-common Met.», 2, 383 (1960).
[3] R. FERRO, «Rend. Accad. Naz. Lincei», VIII, 29, 70 (1960).
[4] R. FERRO, G. RAMBALDI e R. CAPELLI, «J. less-common Met.», 4, 16 (1962).
[5] R. FERRO e R. CAPELLI, «Rend. Accad. Naz. Lincei», VIII, 34, 659 (1963).
[6] R. FERRO, M. MATTACE-RASO e G. RAMBALDI, «Rend. Accad. Naz. Lincei», VIII, 36, 498 (1964).
[7] R. FERRO, R. CAPELLI e G. RAMBALDI, «Rend. Accad. Naz. Lincei», VIII, 34, 45 (1963).
[8]
R. FERRO,
R. CAPELLI,
A. BORSESE e
G. CENTINEO, «
Rend. Accad. Naz. Lincei», VIII,
45, 54 (
1968). |
fulltext bdim[9] R. FERRO, G. RAMBALDI e R. CAPELLI, «Rend. Accad. Naz. Lincei», VIII, 36, 491 (1964).
[10] R. FERRO, R. CAPELLI e R. MARAZZA, «Rend. Accad. Naz. Lincei», VIII, 41, 85 (1966).
[11] L. E. EDSHAMMER (Institute of Inorg. and Phys. Chemistry, University of Stockholm) ha ottenuto valori leggermente inferiori: a = 4,246 e c = 7,756 Å (comunicazione privata).
[12] P. ESSLINGER e K. SCHUBERT, «Z. Metallk.», 48, 126 (1957).
[13] G. BRAUER, H. NOWOTNY e R. RUDOLPH, «Z. Metallk.», 38, 81 (1947).
[14] K. SCHUBERT e K. ANDERKO, «Z. Metallk.», 42, 321 (1951).
[15] G. RAYNOR The physical metallurgy of magnesium and its alloys, pag. 209, Pergamon Press, London 1959.
Con il contributo del Ministero per i Beni e le Attività Culturali