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用X射线光电子能谱、穆斯堡尔谱学等手段研究了用化学还原法制备的纳米金属玻璃(Fe_(35)Ni_(15)B_(26))的表面状态、结构弛豫及晶化过程。实验结果表明:相对体相而言,微粒表层富镍而缺铁,且表面元素大多处于氧化态;结构弛豫过程中超精细场的逐步变化与微粒中各种短程序的变化相联系;由于微粒中元素分布的不均匀性,其晶化产物有异于相近成分的传统条带铁镍硼金属玻璃的晶化产物。
The surface states, structure relaxation and crystallization of Fe_ (35) Ni_ (15) B_ (26) nanocomposite glass prepared by chemical reduction method were studied by X-ray photoelectron spectroscopy and Mossbauer spectroscopy. process. The experimental results show that: the relative bulk phase, the surface of the particles are nickel-rich and iron deficiency, and most of the surface elements in the oxidation state; the gradual change of the hyperfine field during structural relaxation is related to the changes of various short programs in the particles; In the non-uniformity of the elemental distribution, the crystallization product is different from the crystallization products of the conventional band-shaped iron-nickel-boron metal glass with similar composition.