X-ray diffraction and differential thermal analysis of splat-quenched gold-germanium alloy
1975; Elsevier BV; Volume: 18; Issue: 2 Linguagem: Inglês
10.1016/0025-5416(75)90181-0
ISSN1873-4928
Autores Tópico(s)Semiconductor materials and interfaces
ResumoBy X-ray diffraction and differential thermal analysis it is shown that the constitution of a splat-quenched gold - germanium eutectic alloy is dependent on the initial melt temperature. Whereas specimens quenched from high temperature contain the previously reported β (h.c.p.) and γ (b.c.t.) phases those quenched from just above the eutectic point do not contain β. On isochronal annealing both the β and γ decompose in single stages to the equilibrium gold and germanium. The decomposition of the γ has an associated enthalpy change of about 3.5 kJ mol−1 and an activation energy of 0.114 ± 0.003 MJ mol−1.
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