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本文测定了铝单晶体不同的晶面的磁化率值;并对多晶铝中晶粒大小对磁化率的影响进行了初步探讨。试验结果表明,磁化率与原子面密度之间存在着一定的函数关系。低指数晶面中,以(111)面的磁化率为最小(约为0.541×10~(-6)cm~3/g);其次是(100)面,约为0.561×10~(-6)cm~3/g;而(110)面的磁化率比较大,约为0.614×10~(-6)cm~3/g。高指数晶面的磁化率均比较高,如(310)面约为0.745×10~(-6)cm~3/g, (311)面为0.730×10~(-6)cm~3/g。上述方向性对多晶体铝的磁化率值有明显的影响。其规律是:磁化率随着晶粒细化而减小。在一定条件下,晶粒大小的作用甚至会超过杂质元素的作用。
In this paper, the susceptibility values of different crystal planes of aluminum single crystal were measured. The influence of the grain size on the magnetic susceptibility of polycrystalline aluminum was also discussed. The experimental results show that there is a certain functional relationship between magnetic susceptibility and atomic density. In the low index crystal plane, the magnetic susceptibility of the (111) plane is the smallest (about 0.541 × 10 -6 cm 3 / g), followed by the (100) plane about 0.561 × 10 -6 ) cm ~ 3 / g, while the magnetic susceptibility of (110) plane is relatively large, about 0.614 × 10 ~ (-6) cm ~ 3 / g. The magnetic susceptibility of high index crystal plane is relatively high, for example, the (310) plane is about 0.745 × 10 -6 cm 3 / g and the (311) plane is 0.730 × 10 -6 cm 3 / g . The above orientation has a significant effect on the susceptibility of polycrystalline aluminum. The law is: magnetic susceptibility decreases with the grain refinement. Under certain conditions, the role of grain size even more than the role of impurity elements.