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Effect of water vapor and hydrogen treatments on the surface structure of Ni$$_{3}$$Al foil

Ni$$_{3}$$Alフォイルの表面構造に関する水蒸気および水素処理の効果

Xu, Y.*; Ma, Y.*; 櫻井 惇也*; 寺岡 有殿; 吉越 章隆 ; 出村 雅彦*; 平野 敏幸*

Xu, Y.*; Ma, Y.*; Sakurai, Junya*; Teraoka, Yuden; Yoshigoe, Akitaka; Demura, Masahiko*; Hirano, Toshiyuki*

The Ni$$_{3}$$Al foils were heat treated in water vapor at 873 K for 1 h followed by H$$_{2}$$ reduction at 873 K for 1 h. The effects of the water vapor treatment and the H$$_{2}$$ reduction on the surface structure of the Ni$$_{3}$$Al foils were investigated by means of scanning electron microscopy and synchrotron radiation X-ray photoemission spectroscopy. Both Ni and Al were oxidized during the water vapor treatment; fine NiO particles were formed on the surface, accompanied by the formation of Al(OH)$$_{3}$$ and NiAl$$_{2}$$O$$_{4}$$/Al$$_{2}$$O$$_{3}$$. The NiO particles were reduced to metallic Ni and the Al(OH)$$_{3}$$ was decomposed to Al$$_{2}$$O$$_{3}$$, whereas the NiAl$$_{2}$$O$$_{4}$$ and Al$$_{2}$$O$$_{3}$$ remained unchanged during the H$$_{2}$$ reduction, forming a Ni-enriched porous structure on the surface layer of NiAl$$_{2}$$O$$_{4}$$/ Al$$_{2}$$O$$_{3}$$.

使用言語

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English

掲載資料名

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Applied Surface Science

巻

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315

号

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ページ数

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p.475 - 480

発行年月

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2014/10

発表会議名

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開催年月

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開催都市

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開催国

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キーワード

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no keyword

特許データ

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PDF

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論文URL

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https://doi.org/10.1016/j.apsusc.2014.02.144

研究データの公開先DOI

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使用施設

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SPring-8(大型放射光施設)

広報プレスリリース

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論文解説記事
(成果普及情報誌)

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受委託・共同研究相手機関

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物質・材料研究機構

Access

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- Accesses

InCites™

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パーセンタイル：31.93

分野：Chemistry, Physical

Altmetrics

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