2022年7月
Microstructural Changes and Hydrogen Permeability of Rolled and Annealed Nb30Ti35Co35 Alloys
Materials Transactions
- ,
- ,
- 巻
- 63
- 号
- 7
- 開始ページ
- 981
- 終了ページ
- 986
- 記述言語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.2320/MATERTRANS.MT-M2022003
The relationship between the microstructural changes and hydrogen permeability of rolled and annealed Nb30Ti35Co35 alloys was investigated. The as-cast alloy had a lamellar structure that consisted of bcc-(Nb, Ti) and B2-TiCo phases. Hydrogen permeability decreased with increasing rolling reduction. The granule (Nb, Ti) phase formed in the TiCo matrix after annealing at temperatures of 1173 to 1373 K. The hydrogen permeability of the non-rolled alloys after annealing, which caused microstructural changes, was almost independent of annealing temperature. In contrast, the hydrogen permeability of the rolled alloys increased with increasing annealing temperature. It recovered to 90% of that for the as-cast alloy after annealing at 1373 K, which is higher than the value predicted by the mixing rule for the two phases. Therefore, rolling and annealing effectively increase the hydrogen flux for the industrial preparation of NbTiCo alloy foil for hydrogen production.
- リンク情報
- ID情報
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- DOI : 10.2320/MATERTRANS.MT-M2022003
- ISSN : 1345-9678
- SCOPUS ID : 85134518563