Characterization of interface between particles in Al powder compacts by pulse electric current sintering

Guoqiang Xie, Osamu Ohashi, Norio Yamaguchi, Minghui Song, Kazuo Furuya, Tetsuji Noda

    Research output: Contribution to journalConference articlepeer-review

    5 Citations (Scopus)

    Abstract

    Characterization of the bonding interfaces among particles of Al powder compacts prepared by pulse electric current sintering (PECS) process was investigated by means of scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HRTEM). The direct metal- to-metal bonding interfaces and the metal-to-oxide film layer-to-metal bonding interfaces were observed in Al powder compacts. The fraction of the direct metal-to-metal bonding interfaces in the powder compacts increased with increasing in sintering temperature or loading pressure. The oxide film covered at Al powder particles surface was broken and dispersed by plastic deformation of powder particles under loading pressure. Increasing in sintering temperature or loading pressure, the breakdown of oxide film was promoted.

    Original languageEnglish
    Pages (from-to)97-102
    Number of pages6
    JournalMaterials Science Forum
    Volume423-425
    DOIs
    Publication statusPublished - 2003
    EventProceedings of the Seventh International Symposium on Functionally Graded Materials - Beijing, China
    Duration: 2002 Oct 152002 Oct 18

    Keywords

    • Aluminum
    • Bonding interface
    • Oxide film
    • Powder compact
    • Pulse electric current sintering
    • Transmission electron microscopy

    ASJC Scopus subject areas

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

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