Flaking and wave-like structure on metallic glasses induced by MeV-Energy helium ions

F. Pászti, M. Fried, L. Pogány, A. Manuaba, G. Mezey, E. Kótal, I. Lovas, T. Lohner, L. Pócs

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Ten samples prepared from different kinds of metallic glasses (differing in composition and manufacturing technology) were bombarded by 2 or 1 MeV helium ions with high fluence under different experimental conditions. During bombardment the sample temperature rise caused by irradiation heating was estimated and kept below the temperature that is needed for the investigated metallic glass to crystallize. In all cases the surface deformation processes were dominated by flaking, i.e. nearly from the whole implanted area a layer of uniform thickness corresponding to the applied ion projected range suddenly flaked off. The surface left behind the flaked layer was characterized by a wave-like structure, i.e. by a regular series of asymmetrical elevations. Such periodical elevations which did not appear on the annealed samples are caused by a mechanism developed during the bombardment of the amorphous structure (of metallic glasses) by high energy helium ions. Details of this outstanding phenomena are discussed.

Original languageEnglish
Pages (from-to)273-280
Number of pages8
JournalNuclear Instruments and Methods In Physics Research
Issue numberPART 1
Publication statusPublished - 1983


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