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Ti−V−Cr BCC alloys system with high protium content

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Abstract

This paper aims to study the relationship between the protium absorption properties and alloy composition of Ti−V−Cr alloys. We studied the effects of composition of the alloys and the heat-treatment on the protium absorption-desorption properties of Ti−V−Cr alloys, and found that Ti−35V−40Cr alloys show 2.6 mass% protium capacity. The plateau pressure of the alloys increased with decreasing lattice constants, resulting from increasing Cr content. The main phase of the samples containing more than 15%V was a BCC phase in the cast state. These BCC phase alloys exhibited 2.4 mass% protium. It was also found that the heat-treatment was effective in stabilizing a BCC structure in Ti−V−Cr alloys with low V content. The alloy yields the high capacity of 3.0 mass% protium capacity, which will be the highest value at 313 K reported so far. The alloy will be promising since it contains a low amount of the expensive V element.

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Authors and Affiliations

  1. Department of Materials Science, Graduate School of Engineering, Tohoku University, Aoba-ku 02, 980-8579, Sendai, JAPAN

    M. Okada, T. Tamura, H. Takamura & A. Kamegawa

  2. Honda Motor Company, Tochigi Research Institute, Tochigi, Japan

    T. Kuriiwa

Authors
  1. M. Okada
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  2. T. Kuriiwa
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  3. T. Tamura
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  4. H. Takamura
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  5. A. Kamegawa
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Additional information

This article based on a presentation made in the symposium “The 2nd KIM-JIM Joint Symposium: Hydrogen Absorbing Materials”, held at Hanyang University, Seoul, Korea, October 27–28 under the auspices of The Korean Institute of Metals and Materials and The Japan Institute of Metals.

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Okada, M., Kuriiwa, T., Tamura, T. et al. Ti−V−Cr BCC alloys system with high protium content. Met. Mater. Int. 7, 67–72 (2001). https://doi.org/10.1007/BF03026941

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  • DOI: https://doi.org/10.1007/BF03026941

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