The Application of Phase Diagram for Interfacial Reactions in Electronic Packaging - Crimson Publishers
The Application of Phase Diagram for Interfacial Reactions in Electronic Packaging by Yee Wen Yen* in Crimson Publishers: Peer Reviewed Material Science Journals
The phase diagram investigation
is basically scientific study of materials science and engineering. The basic
materials knowledge, such as material thermodynamics and kinetic, phase
transformation, and solid state diffusion can be used to explain the intermetallic
compounds (IMCs) formed at the interface. Meanwhile, the phase diagram
information is one of the important tools, as well. The phenomena in the
interfacial reaction should be combined with the phase equilibrium information.
Therefore, we can have a clear understanding of the interfacial reaction
between the atomic diffusion mechanism and the final equilibrium condition. In
the electronic packaging process, lead-free solders are Sn-based alloys, and
the substrate is likely to be the Ni/Cu structure. During the soldering
process, both Cu and Ni are rapidly dissolved into the molten solder, resulting
in the concentration changes of Cu or Ni.
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