کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1814067 1025644 2008 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermodynamic properties of some gallium-based binary alloys
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Thermodynamic properties of some gallium-based binary alloys
چکیده انگلیسی

We have studied the concentration dependence of the free energy of mixing, concentration–concentration fluctuations in the long-wavelength limit, the chemical short-range order parameter, the enthalpy and entropy of mixing of Ga–Zn, Ga–Mg and Al–Ga binary alloys at different temperatures using a quasi-chemical approximation for compound forming binary alloys and that for simple regular alloys. From the study of the thermodynamic quantities, we observed that thermodynamic properties of Ga–Zn and Al–Ga exhibit positive deviations from Raoultian behaviour, while Ga–Mg exhibits negative deviation. Hence, this study reveals that both Ga–Zn and Al–Ga are segregating systems, while chemical order exists in Ga–Mg alloy in the whole concentration range. Furthermore, our investigation indicate that Al–Ga binary alloy have a tendency to exhibit ideal mixture behaviour in the concentration range 0⩽cAl⩽0.300⩽cAl⩽0.30 and 0.7⩽cAl⩽10.7⩽cAl⩽1.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 403, Issue 17, 1 August 2008, Pages 2629–2633
نویسندگان
, , , ,