Compressive deformation of MWCNT porous preform during infiltration of aluminum or magnesium alloy

Hisao Uozumi*, Kenta Kobayashi, Kota Nakanishi, Tadashi Matsunaga, Hiroki Sakamoto, Yukata Mekuchi, Masaki Kuno, Takayuki Tsukada, Kenji Shinozaki, Chitoshi Masuda, Makoto Yoshida

*この研究の対応する著者

    研究成果

    抄録

    Multi-walled carbon nanotube (MWCNT) has sperior high strength, high modulus and high thermal conductivity. The contact angle between MWCNT and molten metal is necessary to estimate the threshold pressure to infiltration. In this study, at first, wettability of the basal plane of graphite by molten aluminum or magnesium was measured using sessile drop method. As the result, the contact angle molten aluminum or magnesium was 127° or 120° respectively. Secondary, wettability of the MWCNT preform by molten aluminum or magnesium was measured. The both molten droplets bounced and rolled on the MWCNT preforms. By means of average values of droplet height, equatorial diameter and interfacial diameter, the contact angle was estimated. As a result, the contact angle between the MWCNT preform and molten aluminum or magnesium was 174° or 165° respectively. By using Cassie's rule of mixture, it was calculated that contact angle between MWCNT and molten aluminum or magnesium was 168° or 150° respectively. Moreover, trial fabrication of MWCNT reinforced aluminum or magnesium alloys composites was carried out by squeeze casting. As the result, these composites were obtained without non-infiltration.

    本文言語English
    ホスト出版物のタイトルICCM International Conferences on Composite Materials
    出版ステータスPublished - 2007
    イベント16th International Conference on Composite Materials, ICCM-16 - "A Giant Step Towards Environmental Awareness: From Green Composites to Aerospace" - Kyoto
    継続期間: 2007 7 82007 7 13

    Other

    Other16th International Conference on Composite Materials, ICCM-16 - "A Giant Step Towards Environmental Awareness: From Green Composites to Aerospace"
    CityKyoto
    Period07/7/807/7/13

    ASJC Scopus subject areas

    • 工学(全般)
    • セラミックおよび複合材料

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