Abstract

Isoperibolic calorimetry is used to determine the enthalpies of mixing of liquid alloys of the Ag‒Al–Yb system along two radial sections with a constant ratio of atomic fractions of aluminum and silver: (1) x_Ag/x_Al = 0.46/0.54 at 1271 ± 1 K and (2) x_Ag/x_Al = 0.19/0.81 for 1454 ± 5 K up to x_Yb ∼ 0.2. It is found that melts of the studied system form with the release of a small amount of heat (ΔH_min = −29 kJ/mol), and the minimum ΔH accounts for the middle of the concentration triangle. Using the geometric and analytical Redlich–Kister models, calculations are made for ΔH triple system melts Ag–Al–Yb using similar data for double boundary subsystems.

中文翻译：

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三元体系Ag-Al-Yb熔体的热力学性质

摘要

等代谢量热法用于确定沿两个径向截面以恒定比例的铝和银原子分数混合的Ag‒Al-Yb系统液态合金的混合焓：（1）  x _Ag / x _Al = 0.46 / 0.54 1271±1 K和（2）X_的Ag / X_的Al = 0.19 / 0.81 1454±5K的高达X_镱〜0.2。发现所研究系统的熔融物会散发少量热量（ΔH _min = -29 kJ / mol），并且最小ΔH占浓度三角形的中间。使用几何和解析Redlich–Kister模型，对Δ进行计算H三重系统使用相似的双边界子系统数据熔化Ag-Al-Yb。