Design, Life-Time and Residual Life

Hoffelner, Wolfgang

doi:10.1007/978-1-4471-2915-8_8

Cited by 1 publication

(1 citation statement)

References 27 publications

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“…Next generation nuclear reactor concepts require advanced materials with superior radiation resistance [3,4]. Heavy ion irradiations often induce the formation of various types of damages such as Frenkel pairs, dislocation loops, stacking fault tetrahedrons, cavities and precipitates seriously degrading the properties of materials [5][6][7]. One of the feasible approaches to mitigate radiation damage in materials is to increase their self-healing capacity by introducing a large number of neutral defect sinks, including high angle grain boundaries, twin boundaries (TB), interfaces and free surfaces [8][9][10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

In situ study on surface roughening in radiation-resistant Ag nanowires

Shang

Fan

et al. 2018

Nanotechnology

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Metallic materials subjected to heavy ion irradiation experience significant radiation damage. Free surface is a type of effective defect sinks to improve the radiation resistance in metallic materials. However, the radiation resistance of metallic nanowires (NWs) is largely unknown. Here we show, via in situ Kr ion irradiations in a transmission electron microscope, Ag NWs exhibited much better radiation resistance than coarse-grained Ag. Irradiation-induced prominent surface roughening in Ag NWs provides direct evidence for interaction between defect clusters and free surface. Diameter dependent variation of the surface roughness in irradiated Ag NWs has also been observed. This study provides insight on mechanisms of enhanced radiation resistance via free surfaces in metallic NWs.

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