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Abstract
Nano-structured zirconium nitride layers – on Si substrates – of various thicknesses (0.1, 3, 10 and 20μm) were irradiated with 167MeV Xe, 250MeV Kr and 695MeV Bi ions to fluences in the range from 3×1012 to 2.6×1015cm−2 for Xe, 1×1013 to 7.06×1013cm−2 for Kr and 1012 to 1013cm−2 for Bi. The purpose of these irradiation experiments is to simulate the effects of fission fragment bombardment on nanocrystalline ZrN. The irradiated layers where subsequently analysed by X-ray diffraction (XRD), transmission electron microscopy (TEM) and nano-indentation hardness testing (NIH) techniques. XRD, TEM and NIH results indicate that ZrN has a very high tolerance to the effects of high energy irradiation.
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