【摘要】 应用X射线衍射法测定了Pb-Sn-Bi三元系Pb基α相固溶体的点阵参数,发现点阵间距与成分呈线性变化,对两批实验数据分别进行回归分析,得到点阵参数-浓度关系的统一解析式: α=0.49495X_Pb+0.47813X_Sn+0.50629X_Bi。其F检验置信度大于99.9％,残余标准差σ=6.4×10^-5 nm,分析点阵畸变的影响因素表明尺寸效应是控制固溶体点阵行为的主要因素。更多还原

【Abstract】 The lattice parameters of Pb-based α-phase solid solution in Pb-Sn-Bi ternary system were determined by means of X-ray diffraction. The experimental results show that the lattice parameters vary linearly with the molar fractions. The relationship between lattice parameters varying with compositions of the alloy was obtained by regressive analysis: α=0.49495X_Pb+0.47813X_Sn+0.50629X_Bi. The confidence of F-test is larger than 99.9％ and the standard deviation σ is 6.4×10^-5 nm. The analysis of influence factors on lattice distortion shows that the size effect dominates lattice behaviours.更多还原