Sažetak sa skupa
Interval of homogeneity of the ε-phase and anomalies in the relative dilatation of alloys in the composition interval 95-99 wt.% Zn of the Sb-Zn system
S. Koneska
; Faculty of Physics, University of Skopje, Skopje
G. Mavrodiev
; Faculty of Physics, University of Skopje, Skopje
Sažetak
The results of dilatometric investigations as well as the investigations by the qualitative dynamical differential calorimetry (DDC) method on the Sb-Zn alloys in the composition interval 40-43.5 wt.% Zn indicate a shift of the ε-phase composition interval towards the lower Zn compositions (between 41 and 41.72 wt.% Zn), in comparison with the phase diagram. This conclusion is in agreement with the earlier metallographic investigations of these alloys at room temperature.
The thermal-dilatation analysis of homogenized (400 hours at 300 °C) Sb–Zn alloys in the vicinity of the eutectic composition, 97.4 wt.% Zn, shows an anomalous change in the relative dilatation Δℓ/ℓ, owing to the presence of the eutectic (η + Zn) in the alloys at the temperatures below 409 °C. The metallographic examinations of microstructures at room temperature confirm the presence of this eutectic in the alloys investigated.
Ključne riječi
Hrčak ID:
340711
URI
Datum izdavanja:
15.12.1980.
Posjeta: 171 *