CAJ | 학술논문

提出一种能精确考虑固体结合能的四参数通用状态方程, 并且在高压和膨胀区域都具有正确的行为, 不会出现物理上不正确的振荡现象. 新方程可以将Vinet方程和普遍化Lennard-Jones (GLJ) 方程作为特例包括于其中. 将新方程与文献中的典型方程应用于32种金属固体, 结果表明新方程在给出正确结合能数据的同时, 能够很好的拟合实验压缩数据. 结果还表明, 多数金属的相互作用具有短程相互作用的性质, 但是结合能较大相互作用的强度较强.
제출일충능정학고필고체결합능적사삼수통용상태방정, 병차재고압화팽창구역도구유정학적행위, 불회출현물리상불정학적진탕현상. 신방정가이장Vinet방정화보편화Lennard-Jones (GLJ) 방정작위특례포괄우기중. 장신방정여문헌중적전형방정응용우32충금속고체, 결과표명신방정재급출정학결합능수거적동시, 능구흔호적의합실험압축수거. 결과환표명, 다수금속적상호작용구유단정상호작용적성질, 단시결합능교대상호작용적강도교강.
A four-parameter universal equation of state for solids is proposed. The equation is able to exactly consider cohesive energy;no physically incorrect oscillations exist, and its action is correct both at high and expanded regions. It can include the Vinet and generalized Lennard-Jones (GLJ) equations in it as special cases. The new equation and several typical equations in literature are applied to 32 metallic solids. The results show that the new equation can well fit experimental data, and can give correct cohesive energy. The results also show that the interaction for most metallic solids has short range, high cohesive energy and strong strength.