Tritium Autoradiography Study on Hydrogen Invading Aluminum from Different Environments
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- Watakabe Takahito
- Major in Materials Science, Graduate School of Science and Engineering, Ibaraki University
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- Itoh Goroh
- Department of Mechanical Engineering, College of Engineering, Ibaraki University
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- Hatano Yuji
- Hydrogen Isotope Research Center, University of Toyama
Bibliographic Information
- Other Title
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- 異なる環境からアルミニウム中に侵入する水素のトリチウムオートラジオグラフィ解析
- コトナル カンキョウ カラ アルミニウム チュウ ニ シンニュウ スル スイソ ノ トリチウムオートラジオグラフィ カイセキ
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Abstract
Behavior of hydrogen that invades pure aluminum, 6061 and 7075 aluminum alloys from two environments, water and hydrogen gas, has been investigated by means of tritium autoradiography, TARG, a technique to visualize the hydrogen atoms in a specimen by using tritium, radioisotope of hydrogen, as a tracer. Sheet specimens of aluminum of 99.99% purity rolled and then annealed, and T6-tempered 6061 and 7075 alloys were subjected to tritium charging in tritiated water and tritium gas, and then to TARG. The TARG was made in the following way. Photographic emulsion was covered on the polished specimen surface, exposed in liquid nitrogen for 14 d, developed, fixed, rinsed and finally observed with an SEM equipped with an EDXS device. In pure aluminum, hydrogen invasion was not detected, while hydrogen was observed in the constituent particles in the two alloys; hydrogen invades 6061 aluminum alloy through Al-Fe-Si phase and 7075 aluminum alloy through Al7Cu2Fe phase. This feature was commonly observed irrespective of the environment, i.e., tritiated water or tritium gas. The number of silver particles detected was larger in 7075 than in 6061.<br>
Journal
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- Journal of the Japan Institute of Metals and Materials
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Journal of the Japan Institute of Metals and Materials 77 (12), 565-570, 2013
The Japan Institute of Metals and Materials
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Keywords
Details 詳細情報について
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- CRID
- 1390001206482075648
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- NII Article ID
- 40019896209
- 130004456375
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- NII Book ID
- AN00187860
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- COI
- 1:CAS:528:DC%2BC2cXivFSntbk%3D
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- ISSN
- 18806880
- 24337501
- 00214876
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- NDL BIB ID
- 025058514
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed