Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1680682 | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms | 2014 | 4 Pages |
Abstract
Blistering behavior in polycrystalline tungsten is investigated under low flux helium and hydrogen ion irradiation. Subsequent to irradiation, the grain orientations near (0Â 1Â 1), (1Â 0Â 1) and (1Â 1Â 1) planes on the surface are analyzed by SEM and EBSD. It is found that blister density is the greatest on the grain orientation near (1Â 1Â 1) plane, and the smallest on the grain orientation near (0Â 0Â 1) plane. Experiments suggest that blistering degree highly depends upon the grain orientation, blisters are easily formed on the grain orientation near (1Â 1Â 1) plane, and medium on the grain orientation near (1Â 0Â 1) plane, and the most rare on the grain orientation near (0Â 1Â 1) plane. The surface resistant orientation of tungsten is orientation near (0Â 0Â 1) plane. The atom binding energy in the crystal plane in combination with the channeling effect of adjacent crystal planes may play an important role for the difference of the surface morphology.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Surfaces, Coatings and Films
Authors
Fangshu Liu, Haitao Ren, Shixiang Peng, Kaigui Zhu,