Phase transformation quasicrystalline–amorphous in Zr–Ti–Ni–Cu by swift heavy ions

• Published in: Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms Vol. 245; no. 1; pp. 133 - 136
• Main Authors: Mechler, S., Abromeit, C., Wanderka, N., Macht, M.-P., Zumkley, T., Schumacher, G., Klaumünzer, S.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.04.2006
• Subjects: Amorphization; Electronic energy loss; Quasicrystal; Swift heavy ions; 61.10.Nz; 64.60.My; 68.37.Lp; Swift heavy ions; Amorphization; Electronic energy loss; 61.80.Jh; Quasicrystal; 61.44.Br
• ISSN: 0168-583X; 1872-9584
• DOI: 10.1016/j.nimb.2005.11.090

The stability of the icosahedral quasicrystalline alloy Zr64.5Ti11.4Ni13.8Cu10.3 under irradiation with swift heavy ions was examined. The electronic energy loss (dE/dx)e was varied from 18keV/nm to 38keV/nm and 42keV/nm by use of 300MeV Kr and 350MeV and 593MeV Au ions, respectively. The changes of the microstructure of the quasicrystalline phase were characterized ex situ by X-ray diffraction and transmission electron microscopy (TEM). Irradiation with 300MeV Kr up to a fluence of 5×1013ions/cm2 did not lead to any changes of the microstructure of the quasicrystalline phase, whereas this phase was completely amorphized by the Au-ions already after a fluence of 1×1013ions/cm2. After applying a lower fluence of 1×1011ions/cm2 (593MeV Au) single ion tracks were visualized by TEM.