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Reactivity between Sn Ag Solder and Au/Ni Co Plating to Form Intermetallic Phases

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Figure

Fig. 1Schematic illustration of cross section of Ni/Sn–Ag/Au/Ni–20Coplated Kovar joints.
Fig. 4BE images of Ni–xCo/Sn–Ag joints reflowed and held at 513 K.
Fig. 5BE images of Ni–xCo/Au/Sn–Ag joints reflowed and held at 513 K.
Fig. 8BE images and DSC curves of Ni/Sn–Ag and Au/Ni–20Co joints reflowed and held at 513 and 553 K.
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