【摘要】 <正> 通常为改进非晶带的磁性,往往对非晶带进行热处理,并研究其晶化及磁性。这方面的研究工作比较多。但也有人在淬态Al-Cr非晶合金中发现有晶粒。 我们对七种铁基和钴基淬态非晶薄带样品内可能存在晶化进行了研究。方法是分别采用X射线衍射法和差热分析法确证了这七种样品都是非晶态的。而利用电子显微镜做背射电子更多还原

【Abstract】 In order to improve the magnetic properties of amorphous ribbons, heat treatment is often used. After that crystallization and magnetic properties are investigated. [1’2’3]In this paper seven iron and cobalt base as-cast amorphous ribbons are studied to determine whether there is crystallization. Using XRD and DTA methods, we proved the samples to be in the amorphous state. Then using electron microscope back scattering method, we found that crystallization had occurred in the sample surface. Further observation revealed that crystallization had also occured inside the samples. Using the heater of the electron microscope, we compared the crystallization in the as-cast amorphous ribbons to that in the heat treated ones.更多还原