Analysis for Mechanism of Crystal Orientation of Materials by Imposition of a High Magnetic Field

晶体取向是决定电、磁、机械等性能的最关键因素之一，因此在各个工艺中都需要发展晶体取向方法。一般来说，材料的磁化率随晶体取向的不同而不同，利用这一特性使我们能够建立晶体取向方法。在强磁场下进行了Fe-C合金的凝固过程、电沉积和气相沉积过程以及碳纤维的石墨化过程，研究了Fe-C合金中沉积石墨的晶体取向以及电沉积和气相沉积过程中得到的沉积膜，并对后者过程中碳纤维的强度进行了检测。在凝固、电沉积和气相沉积过程中发现了晶体取向的可能性，在碳纤维石墨化过程中增强了碳纤维的强度。

The crystal orientation is one of the most crucial factors to determine the electric, magnetic and mechanical properties, etc., so that the development of crystal alignment methods in each process has been desired. As in general, materials have different magnetic susceptibilities depending on the crystal orientation, the utilization of this property enables us to establish crystal alignment methods.Solidification process of Fe-C alloy, electrodeposition and vapordepositiopn processes and graphitization process of carbon fiber were carried out under a high magnetic field and the crystal orientation of deposited graphite in Fe-C alloy and deposited films obtained in the electrodeposition and vapordepositiopn process were studied and the strength of carbon fibers in the latter process was examined. The possibility of the crystal orientation has been found in the solidification and electrodeposition and vapordepositiopn processes and the carbon fibers have been strengthend in the graphitization process of carbon fiber.