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|Title: ||Ion beam irradiation effects in strontium zirconium phosphate with NZP-structure type.|
|Authors: ||Gregg, DJ|
|Keywords: ||Thermal Expansion|
|Issue Date: ||1-Mar-2014|
|Publisher: ||ELSEVIER Science BV|
|Citation: ||Gregg, D. J., Karatchevtseva, I., Thorogood, G. J., Davis, J., Bell, B. D. C., Jackson, M., Dayal, P., Ionescu, M., Triani, G., Short, K., Lumpkin, G. R., & Vance, E. R. (2014). Ion beam irradiation effects in strontium zirconium phosphate with NZP-structure type. Journal of Nuclear Materials, 446(1-3), 224-231.|
|Abstract: ||Ceramics with the sodium zirconium phosphate or NZP type structure have potential as nuclear waste form and inert matrix materials. For both applications the material will be subjected to self-radiation damage from alpha-decay of the incorporated actinides. In this study, ion-beam irradiation using Au- and He-ions has been used to simulate the consequences of a-decay and the effects of irradiation on the structural and macroscopic properties (density and hardness) have been investigated. Irradiation by Au-ions resulted in a significant volume contraction of similar to 7%, a reduction in hardness of similar to 30% and a loss in long-range order at fluences above 10(14) Au-ions/cm(2). In contrast, little effect on the material properties was noted for samples irradiated with He-ions up to a fluence of 10(17) ions/cm(2). Thermal annealing was investigated for the highest fluence Au-ion irradiated sample and significant decomposition was observed. © 2014, Elsevier Ltd.|
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