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把大块金属玻璃合金系作为一物质系统 ,利用加和性原则分别计算其物理结构参数 ,即混合熵Smix、摩尔原子半径差εd、摩尔原子电负性差εe、热扩散率α以及熔点与熔化焓之比Tm/Hm等 ,分别把大块金属玻璃的临界冷却速度Rc、最大尺寸Zmax以及Zmax/Rc作为合金玻璃形成能力的目标 ,用Origin6.1软件分别对εd·εe·α·Smix·Tm/Hm(记做Л)和Rc,Zmax及Zmax/Rc做统计图。结果表明 :如果以Rc作为合金玻璃形成能力的目标 ,Л为 0 .0 2～ 0 .175时合金的玻璃形成能力最好 ;如果以Zmax作为合金玻璃形成能力的目标 ,Л为 0 .0 47～ 0 .15时合金的玻璃形成能力最好 ;如果以Zmax/Rc作为合金玻璃形成能力的目标 ,Л为 0 .0 3～ 0 .15时合金的玻璃形成能力最好。综合的最佳范围为 0 .0 47～ 0 .15。Л是一个比较理想的表征合金玻璃形成能力的新参数
The bulk metal glass system is used as a material system, and the physical structure parameters are calculated respectively according to the additive principle, that is, the mixing entropy Smix, the difference of the molar atom radius εd, the difference of the molar electronegativity εe, the thermal diffusivity α and the melting point and melting Enthalpy ratio Tm / Hm, respectively, the bulk metal glass critical cooling rate Rc, maximum size Zmax and Zmax / Rc as the glass forming ability of the objective, with Origin6.1 software were εd · εe · α · Smix · Tm / Hm (recorded as Л) and Rc, Zmax and Zmax / Rc do statistics. The results show that if Rc is used as the target of the glass forming ability of alloy, the glass forming ability of alloy is the best when ¯0.02 ~ 0.75. If Zmax is the target of glass forming ability of alloy, ~ 0 .15 when the best glass forming ability of the alloy; if Zmax / Rc as a glass forming ability of the target, Л 0 .03 ~ 0 .15 when the best glass forming ability of the alloy. The best range for synthesis is 0 .0 47 ~ 0 .15. Л is an ideal new parameter to characterize the formation of alloy glass