Phase formation in the diffusion couple of aluminum thin film and gold bulk and the influence of calcium on the phase formation

Masaki Hanai, Masafumi Houkyou, Naoki Utiyama, Akio Fuwa

    Research output: Contribution to journalArticle

    2 Citations (Scopus)

    Abstract

    The behavior of phase layer growth in the diffusion couple of aluminum thin films and gold bulks at the temperatures from 523 K to 773 K was studied by means of SEM, EPMA and optical microscopy. The effect of calcium addition on phase layer growth was also studied. The experimental results show: before the disappearance of aluminum thin films, five intermetallic phases in its equilibrium phase diagram form in the couple and after the aluminum disappearance, the phases with a lesser gold content disappear in sequences. After the disappearance of the AuAl2, AuAl and Au2Al phases, the Au4Al phase grows in the Au5Al2. Kirkendall voids are found to form in the Au5Al2, adjacent to Au4Al. The addition of a small amount of calcium to the Au bulks affects the morpohology, making void sizes smaller and diffusion easier, thus promoting the growth of the Au4Al phase.

    Original languageEnglish
    Pages (from-to)37-43
    Number of pages7
    JournalNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
    Volume60
    Issue number1
    Publication statusPublished - 1996

    Fingerprint

    Aluminum
    Gold
    calcium
    Calcium
    gold
    aluminum
    Thin films
    voids
    thin films
    phase diagrams
    microscopy
    Electron probe microanalysis
    Intermetallics
    Phase diagrams
    Optical microscopy
    intermetallics
    Scanning electron microscopy
    scanning electron microscopy
    Temperature
    temperature

    Keywords

    • Aluminum thin film
    • Calcium addition
    • Diffusion couple
    • Gold bulk
    • Kirkendall void
    • Phase formation

    ASJC Scopus subject areas

    • Metals and Alloys

    Cite this

    Phase formation in the diffusion couple of aluminum thin film and gold bulk and the influence of calcium on the phase formation. / Hanai, Masaki; Houkyou, Masafumi; Utiyama, Naoki; Fuwa, Akio.

    In: Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals, Vol. 60, No. 1, 1996, p. 37-43.

    Research output: Contribution to journalArticle

    @article{3de05664645d468d8527dcf82c025aba,
    title = "Phase formation in the diffusion couple of aluminum thin film and gold bulk and the influence of calcium on the phase formation",
    abstract = "The behavior of phase layer growth in the diffusion couple of aluminum thin films and gold bulks at the temperatures from 523 K to 773 K was studied by means of SEM, EPMA and optical microscopy. The effect of calcium addition on phase layer growth was also studied. The experimental results show: before the disappearance of aluminum thin films, five intermetallic phases in its equilibrium phase diagram form in the couple and after the aluminum disappearance, the phases with a lesser gold content disappear in sequences. After the disappearance of the AuAl2, AuAl and Au2Al phases, the Au4Al phase grows in the Au5Al2. Kirkendall voids are found to form in the Au5Al2, adjacent to Au4Al. The addition of a small amount of calcium to the Au bulks affects the morpohology, making void sizes smaller and diffusion easier, thus promoting the growth of the Au4Al phase.",
    keywords = "Aluminum thin film, Calcium addition, Diffusion couple, Gold bulk, Kirkendall void, Phase formation",
    author = "Masaki Hanai and Masafumi Houkyou and Naoki Utiyama and Akio Fuwa",
    year = "1996",
    language = "English",
    volume = "60",
    pages = "37--43",
    journal = "Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals",
    issn = "0021-4876",
    publisher = "Japan Institute of Metals (JIM)",
    number = "1",

    }

    TY - JOUR

    T1 - Phase formation in the diffusion couple of aluminum thin film and gold bulk and the influence of calcium on the phase formation

    AU - Hanai, Masaki

    AU - Houkyou, Masafumi

    AU - Utiyama, Naoki

    AU - Fuwa, Akio

    PY - 1996

    Y1 - 1996

    N2 - The behavior of phase layer growth in the diffusion couple of aluminum thin films and gold bulks at the temperatures from 523 K to 773 K was studied by means of SEM, EPMA and optical microscopy. The effect of calcium addition on phase layer growth was also studied. The experimental results show: before the disappearance of aluminum thin films, five intermetallic phases in its equilibrium phase diagram form in the couple and after the aluminum disappearance, the phases with a lesser gold content disappear in sequences. After the disappearance of the AuAl2, AuAl and Au2Al phases, the Au4Al phase grows in the Au5Al2. Kirkendall voids are found to form in the Au5Al2, adjacent to Au4Al. The addition of a small amount of calcium to the Au bulks affects the morpohology, making void sizes smaller and diffusion easier, thus promoting the growth of the Au4Al phase.

    AB - The behavior of phase layer growth in the diffusion couple of aluminum thin films and gold bulks at the temperatures from 523 K to 773 K was studied by means of SEM, EPMA and optical microscopy. The effect of calcium addition on phase layer growth was also studied. The experimental results show: before the disappearance of aluminum thin films, five intermetallic phases in its equilibrium phase diagram form in the couple and after the aluminum disappearance, the phases with a lesser gold content disappear in sequences. After the disappearance of the AuAl2, AuAl and Au2Al phases, the Au4Al phase grows in the Au5Al2. Kirkendall voids are found to form in the Au5Al2, adjacent to Au4Al. The addition of a small amount of calcium to the Au bulks affects the morpohology, making void sizes smaller and diffusion easier, thus promoting the growth of the Au4Al phase.

    KW - Aluminum thin film

    KW - Calcium addition

    KW - Diffusion couple

    KW - Gold bulk

    KW - Kirkendall void

    KW - Phase formation

    UR - http://www.scopus.com/inward/record.url?scp=0029735293&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=0029735293&partnerID=8YFLogxK

    M3 - Article

    AN - SCOPUS:0029735293

    VL - 60

    SP - 37

    EP - 43

    JO - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals

    JF - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals

    SN - 0021-4876

    IS - 1

    ER -