摘要
根据混合物体积相加原理,由已知单质组分铁和钕(摩尔比分别为72.32%和26.68%)的Hugoniot数据计算出强磁材料钕铁硼在19 GPa^78 GPa压力范围内的状态方程.计算结果表明,理论计算结果与冲击压缩实验数据符合得很好.D-u关系的平均计算误差为±2.30%,P-V关系的平均计算误差为±9.12%.这表明本文基于Gruneisen模型导出的计算方法,在给定压力区间对钕铁硼这类金属间化合物是适用的;并且有理由预言该算法也适用于其它固体混合物及化合物的高压物态方程研究.
According to the Hugoniot date of element Fe and Nd （the mol ratio are 72.32% and 26.68% ） ,we calculated the equation of state of the hard ferromagnet material Nd2Fe14B at pressure rang with 19 GPa～78 GPa based on the volume additive law,the results indicate that the theoretical calculation accord will with the experiments data and the average error of D-u and P-V relation is ± 2.30 % and ± 9.12 %, that indicated the method in the paper has practicability for this kind of metal compound such as Nd2Fe14B, and can also apply this method to calculate the equation of state of other solid mixture and compound.
出处
《四川大学学报（自然科学版）》
CAS
CSCD
北大核心
2007年第6期1292-1294,共3页
Journal of Sichuan University(Natural Science Edition)
基金
国家自然科学基金
中物院基金联合资助项目(10576020)
