根据固体与分子经验电子理论(EET),利用平均原子模型对(Mo_(1-x),W_x)Si_2)固溶体进行价电子结构分析,并分别与MoSi_2和WSi_2基体进行比较.结果表明,随着x值的增加,(Mo_(1-x),W_x)Si_2固溶体的主干键络键能、最强键上共价电子数和共价电子总数百分比均逐渐增加,表明固溶体的熔点、硬度和强度均逐渐增加.
According to the empirical electron theory (EET) of solids and molecules, the valence electron structures of (Mo_(1-x), W_x)Si_2 solid solutions were analyzed using the average atom model, and they were compared with those of MoSi_2 and WSi_2 matrix. Results show that with x value increasing, the bond energy of the main bond branch, the covalence electron number on the strongest bond and the percentage of total covalence electron number of (Mo_(1-x), W_x)Si_2 solid solutions all increased gradually, indicating the increase of melting point, hardness and strength of (Mo_(1-x), W_x)Si_2 solid solutions.
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