Hydrogen microscopy – Distribution of hydrogen in buckled niobium hydrogen thin films
Hydrogen microscopy – Distribution of hydrogen in buckled niobium hydrogen thin films
复制标题
氢显微镜 â 屈曲铌氢薄膜中氢的分布
DOI:
10.1016/j.ijhydene.2013.08.006
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发表时间:
2013
影响因子:
7.2
通讯作者:
Günther Dollinger
中科院分区:
文献类型:
--
作者:
Stefan Wagner;Marcus Moser;Christoph Greubel;Katrin Peeper;Patrick Reichart;Astrid Pundt;Günther Dollinger
Hydrogen absorption in thin metal films clamped to rigid substrates results in mechanical stress that changes the hydrogen's chemical potential by ΔμH(σ) = −1.124σkJ/molHforσmeasured in [GPa]. In this paper we show that local stress relaxation by the detachment of niobium hydrogen thin films from the substrate affects the chemical potential on the local scale: using coincident proton–proton scattering at a proton microprobe, the hydrogen concentration is determined with μm resolution, revealing that hydrogen is not homogenously distributed in the film. The local hydrogen solubility of the film changes with its local stress state, mapping the buckled film fraction. In niobium hydrogen thin films loaded up to nominal concentrations in the two-phase coexistence region, the clamped film fraction remains in the solid solution phase, while the buckles represent the hydride phase. These results are compared to a simple model taking the stress impact on the chemical potential into account.
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DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
M. Moser;P. Reichart;C. Greubel;G. Dollinger
通讯作者:
G. Dollinger
DOI:
--
发表时间:
2002
期刊:
影响因子:
--
作者:
P. Reichart;G. Dollinger;A. Bergmaier;G. Datzmann;A. Hauptner;H. Körner
通讯作者:
H. Körner
DOI:
10.1016/0001-6160(87)90288-4
发表时间:
1987
期刊:
Acta Metallurgica
影响因子:
--
作者:
R. Kirchheim;J. Hirth
通讯作者:
J. Hirth
DOI:
--
发表时间:
2004
期刊:
影响因子:
--
作者:
P. Reichart;G. Dollinger;A. Bergmaier;G. Datzmann;A. Hauptner;H. Körner;R. Krücken
通讯作者:
R. Krücken
影响因子:
6.2
作者:
J. Kürschner;S. Wagner;A. Pundt
通讯作者:
A. Pundt