Dresden 2014 – scientific programme
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MI: Fachverband Mikrosonden
MI 2: Untersuchung von kondensierter Materie mittels Positronen-Annihilation
MI 2.7: Talk
Monday, March 31, 2014, 12:15–12:30, MER 02
Ion implantation induced damage in ZrO2 probed by a slow positron beam — Wolfgang Anwand1, Xin Ou2, Maik Butterling1, and •Andreas Wagner1 — 1Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiation Physics, POB 51 01 19, 01314 Dresden, Germany — 2Helmholtz-Zentrum Dresden-Rossendorf, Institute of Ion Beam Physics and Materials Research, POB 51 01 19, 01314 Dresden, Germany
ZrO2 in a cubic phase is generally known as YSZ (yttria-stabilized zirconia). YSZ is a promising material which exhibits excellent radiation resistance and chemical stability. It can be applied e.g. for the inter-matrix layer of fuel cells or for covering and storage of nuclear waste. The effect of irradiation on YSZ has already been intensively investigated via single ion beam implantation. Most of the experimental work was performed in order to simulate the radiation damage from alpha particles by He+ implantation, or to simulate the neutron radiation damage as well as the damage introduced from alpha recoils by implantation of heavy ions. Both I ions and He ions were implanted into YSZ samples. Single implantation of I ions as well as He ions, implantation of both types of ions at different sequence, and a simultaneous implantation with a dual beam were carried out in order to create varying defect profiles. Thereby it was intended to distinguish the various influences of the heavy and light ions on the defect profiles and to clarify a possible He retention or release after implantation. The implantation-induced damage was investigated by a mono-energetic slow positron beam.