Study of the evolution of helium bubbles in helium-containing titanium films | Zendy

Kang Wang | Zendy; Deng Ai-Hong | Zendy; Liu Li | Zendy; Yue Li | Zendy; Yulu Zhou | Zendy; Qing Hou | Zendy; Bing Zhou | Zendy; Wang Shan-Lin | Zendy

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Study of the evolution of helium bubbles in helium-containing titanium films

Author(s) -

Kang Wang,

Deng Ai-Hong,

Liu Li,

Yue Li,

Yulu Zhou,

Qing Hou,

Bing Zhou,

Wang Shan-Lin

Publication year - 2012

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.61.226802

Subject(s) - materials science , coalescence (physics) , titanium , helium , annealing (glass) , transmission electron microscopy , bubble , composite material , nanotechnology , atomic physics , mechanics , metallurgy , physics , astrobiology

In this paper, the evolution of the He-related defects in the titanium film is experimentally investigated by combining slow positron beam analysis (SPBA) and transmission electron microscope (TEM) technique. The results indicate that small bubbles in the titanium film distribute uniformly at room temperature. With the increment of He concentration, the density of He bubbles in the sample increases correspondingly. Large bubbles are observed in the titanium film containing high He concentration after 973 K high temperature annealing, and it is found that both migration-coalescence and cascade-coalescence around the bigger He bubbles lead to the rapid growth of He bubbles.

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