• kinetics of dissolution and isothermal solidification for gold-enriched solid–liquid interdiffusion (slid) bonding

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 852
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     this paper presents the development and characterization of a fluxless die-attach soldering process based on gold-enriched solid–liquid interdiffusion (slid). eutectic au-sn and pure au were deposited by jet vapor deposition (jvd) onto two substrates, assembled in a sandwiched structure, and processed in a vacuum furnace using different temperatures and times. microstructural characterization, based on scanning electron microscopy (sem) and energy dispersive x-ray spectroscopy (eds) analysis, revealed the formation of sound joints governed by the interdiffusion of the main constituents. kinetic studies for the dissolution and the isothermal solidification stages were conducted. differential scanning calorimetry (dsc) revealed a solder joint that is thermally stable up to 498°c, thus demonstrating the effectiveness of using the slid process for the production of joints which require a lower processing temperature compared with their remelting point. based on these findings, the recommended final bonding parameters are processing temperature and time of 340°c (310°c < t p < 340°c) and 5 min, respectively.

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