【摘要】 本文采用解方程的方法,计算了S,Se,Te三元素在α-Ti中的最大固溶度C_α的变化规律,并建立了相应的方程式。计算表明,所建立的方程式也适用于Po,算得Po的C_α=0.21（at.-%）,原子实有效电荷z^*=5.26。此外,还根据C_β与C_α的关系估算了S,Se,Te,Po在β-Ti中的最大固溶度C_β分别为0.13,0.24,0.29,0.32（at.-%）。VIA族元素在Ti中的最大固溶度的变化,受该族元素的非金属性及原子半径差的控制,主要控制因素是非金属性。C_α,C_β与△x,△z/r_k,△z/r_cov,z^*/r_k,z^*/r_cov及原子半径差△r有良好的线性关系;C_α和C_β随上述参数的增加呈线性降低。更多还原

【Abstract】 The variation of maximum solubility C_α of S, Se or Te in α-Ti has been calculated by solving the proposed equation. It was shown that the equation is also available to Po, its C_α =0.21 at.-% and the effective electric charge z~*=5.26. The maximum solubility C_β of S, Se, Te or Po in β-Ti was estimated to be 0.13, 0.24, 0.29 or 0.32 at.-% respectively by the correlation between C_β and C_α. Thevariations of C_α and C_β of the elements of group VIA are controlled by nonmetallicity and the difference between the radii of atoms of these elements and Ti, and mainly by their non-metallicity. C_α and C_β have good linear relationships with the difference between electronegativity, the ratio of electric charge and radius of Ti or these elements, the ratio of electric charge and radius of these elements and the difference between atomic radii of Ti and these elements. C_α and C_β decrease linearly with the increase of these parameters.更多还原