研究了原子尺寸因数和电子因素对准晶形成的影响.利用原子尺寸因数和电子因素构成键参数坐标系统,对稀土族13个金属(La,Ce,Pr,Nd,Sm,Eu,Gd,Tb,Dy,Ho,Er,Yb,Lu)基,已有实验结果的55个准晶进行了系统的研究.研究结果表明:在键参数图中,准晶合金形成区与非形成区明显区分开,准确率为92.73%,并且区分边界可用一条椭圆函数曲线描述,椭圆曲线方程为:((x-m))/(c2)2+((y-n))/(d2)2=1,椭圆曲线参数m,n,c,d可由基体元素的相关参数确定,同时对可能存在的新的二元准晶进行了预测.该方法为定性研究及寻找新型稀土金属基准晶合金开辟了一条新的途径,在材料研究领域具有理论指导意义.
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