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December 2018

Hydrogen in aluminium alloy
Local analysis of hydrogen in aluminum alloy by SIMS
The hydrogen atom easily invades into metals and interacts with various lattice defects, such as dislocations, grain boundary, and secondary particles causing degradation of the mechanical properties, well-known as hydrogen embrittlement. 2D and 3D SIMS imaging of hydrogen trapped at intermetallic particles in a practical aluminum alloy: 6061-T6 that has been exposed to high-pressure hydrogen gas: (A) 2D ion maps of 1H-, together with 28Si-, 52Cr-, 56Fe-, (B) 3D image of 1H-, (C) 3D image of 1H- after thermal desorption measurements. The measurements were performed on an IMS 7f.

Courtesy of J. Yamabe, T. Awane and Y. Murakami, Kyushu University, Japan

Hydrogen trapped at intermetallic particles in aluminum alloy 6061-T6 exposed to high-pressure hydrogen gas and the reason for high resistance against hydrogen embrittlement. J.Yamabe et al. International Journal of Hydrogen Energy, 42, 24560 (2017).