期刊
TUNGSTEN
卷 1, 期 3, 页码 229-235出版社
SPRINGERNATURE
DOI: 10.1007/s42864-019-00026-5
关键词
W-TiC; He irradiation; He bubble
资金
- NIFS Collaboration Research Program [NIFS17KLPF055]
To investigate the surface damage of a material by He ions, a dispersion-strengthened W-1wt%TiC alloy was irradiated by 5-keV He ions at 773 K, 973 K, and 1173 K up to an ion dose of 1.8 x 10(21) He m(-2), respectively. No He bubble formation was observed under transmission electron microscopy at any temperature for He doses less than 1.5 x 10(20) He m(-2). When this dose was exceeded, He bubbles grew and void swelling increased with increasing irradiation doses. Naturally, the growth of He bubbles and the void swelling became more pronounced with increasing irradiation temperatures. Compared to the published data on commercially available pure W, the formation of He bubbles was suppressed by TiC particles in the W-TiC alloy, especially at low doses.
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