Crystallization behavior of iron-based amorphous nanoparticles prepared sonochemically

Naoya Enomoto, Shingo Hirata, Miki Inada, Katsuro Hayashi

研究成果: ジャーナルへの寄稿学術誌査読

6 被引用数 (Scopus)

抄録

In general, a rapid quenching is required to obtain an amorphous metal. It is known that an intensive ultrasonication generates a very high temperature within cavitation bubbles in a very short moment, which enables a rapid quenching process in a liquid phase synthesis. In this study, the sonochemically-derived “amorphous iron” from Fe(CO)5 was carefully examined by XRD, TEM, TG-DTA. The product was found to be an amorphous containing a certain amount (∼15%) of volatile component that can be removed by heating in a nitrogen flow. After annealed in the inert atmosphere at 600 °C, cooled down to room temperature, and then exposed in air (oxygen), the sample showed a strong exotherm accompanied by a weight gain. This is due to oxidation of fine metallic iron. Experimental operations of such a reactive material were examined.

本文言語英語
ページ(範囲)563-568
ページ数6
ジャーナルUltrasonics Sonochemistry
35
DOI
出版ステータス出版済み - 3月 1 2017

!!!All Science Journal Classification (ASJC) codes

  • 化学工学(その他)
  • 環境化学
  • 放射線学、核医学およびイメージング
  • 音響学および超音波学
  • 有機化学
  • 無機化学

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