| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5454402 | Journal of Nuclear Materials | 2016 | 6 Pages |
Abstract
W nano-fuzzes have been formed due to the large-flux and low-energy (200eV) He+ irradiation at W surface temperature of 1480 °C. Microscopic evolution of W nano-fuzzes during annealing or low-energy (200 eV) He+ bombardments has been observed using scanning electron microscopy and thermal desorption spectroscopy. Our measurements show that both annealing and He+ bombardments can significantly alter the structure of W nano-fuzzes. W nano-fuzzes are thermally unstable due to the He release during annealing, and they are easily sputtered during He+ bombardments. The current study shows that W nano-fuzzes act as a metastable state during low-energy and large-flux He+ irradiation at an elevated temperature.
Related Topics
Physical Sciences and Engineering
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Nuclear Energy and Engineering
Authors
Yunfeng Wu, Lu Liu, Bing Lu, Weiyuan Ni, Dongping Liu,