Journal of Japan Institute of Light Metals
Online ISSN : 1880-8018
Print ISSN : 0451-5994
ISSN-L : 0451-5994
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Volume 75, Issue 1
Displaying 1-2 of 2 articles from this issue
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RESEARCH ARTICLE
  • Effect of Sn addition on electrochemical activity of ribbons of Mg-Al-Ca anode material for rechargeable magnesium batteries fabricated by rapid solidification
    Yoshitaka FUKUTA, Kensei KIKURA, Tadayoshi TSUKEDA, Tetsuo AIDA, Hiron ...
    2025 Volume 75 Issue 1 Pages 9-13
    Published: January 15, 2025
    Released on J-STAGE: February 15, 2025
    DOIhttps://doi.org/10.2464/jilm.75.9
    JOURNAL FREE ACCESS
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    Magnesium-based batteries are potential candidates for next-generation rechargeable batteries due to the divalent nature of magnesium cations and the natural abundance of magnesium resources. In this study, the electrochemical activity of Mg-6mass%Al-3mass%Ca anodes combined with Sn was investigated. Thin ribbons of the anode specimens were prepared by a single-roll rapid solidification method. The results showed that the electrochemical activity increased upon adding 1 mass% Sn, while it decreased for 3 mass% Sn. Based on the results of an X-ray diffraction analysis, the addition of Sn led to the formation of Mg2Sn and Ca2Sn phases, which increased the lattice distortion. Scanning electron microscopy observations indicated that these secondary phases were homogeneously distributed for 1 mass% Sn addition, while they were coarsely distributed for 3 mass% Sn.

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  • Effect of upset pressure on friction welding of porous aluminum and thermoplastic resin
    Yuta YAMAMOTO, Yoshihiko HANGAI, Hiroyuki TANAKA, Yu GOTO, Kenji OKADA ...
    2025 Volume 75 Issue 1 Pages 14-19
    Published: January 15, 2025
    Released on J-STAGE: February 15, 2025
    DOIhttps://doi.org/10.2464/jilm.75.14
    JOURNAL FREE ACCESS
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    Porous aluminum, which has many pores inside, is lightweight and has excellent shock absorption and sound absorption properties. Because of these characteristics, the use of this material in structural components for automobiles and other vehicles is expected to improve fuel efficiency and collision safety performance. However, porous aluminum has low tensile and flexural strength due to its thin cell walls. Therefore, porous aluminum is expected to be used by combining with dense materials. In this study, we attempted to join aluminum foam fabricated by the precursor method to a thermoplastic resin polycarbonate plate (PCTA) by friction welding. In addition, we verified the effect of upset pressure on friction welding of porous aluminum to PCTA. As a result, high joining strength was obtained by upset pressure at appropriate joining surface temperatures. The results also suggest that upset pressure can prevent air bubbles in the PCTA near the welding interface that generated during welding.

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