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在Co-Ga二元系中,β相的理想成分CoGa在室温的单相均匀范围为36.3—59.8at.-%Ga,它属于立方晶系的CsCl型结构,其点阵常数随Ga成分而变化,在接近理想成分的48at.-%Ga处有一最大值。在富Co端,为替代式固溶体。因为Co原子半径比Ga小,所以可以用原子半径大小来解释其实验现象。但在理想成分的富Ga一端,如果也属于替代式固溶体,则随着Ga含量的增加,点阵常数应增加,但实验的结果与此相反,因此文
In the Co-Ga binary system, the single-phase homogeneous composition of CoGa, which is the ideal composition of the β phase, at room temperature is 36.3-59.8 at .-% Ga, which belongs to the cubic Cs Cs-type structure and has a lattice constant varying with Ga composition Change, there is a maximum near 48at .-% Ga at the ideal. At the Co-rich end, an alternative solid solution. Because the atomic radius of Co is smaller than that of Ga, the experimental phenomenon can be explained by the atomic radius. However, at the Ga-rich end of the ideal composition, if the lattice constant is also an alternative solid solution, the lattice constant should increase as Ga content increases, but the experimental results are the opposite,