Method for silvering kovar alloy interconnection piece
A technology of interconnection sheet and alloy, which is applied in the field of interconnection of solar cells for aerospace, can solve the problems of no improvement in the tensile strength of interconnection sheet and battery sheet, insufficient plating ability and deep plating ability of the coating, high cost of ion implantation process, etc., to achieve The effect of low cost, high yield and stable process
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[0022] Combining the thin, light, small and complex shape of the 0.02mm Kovar alloy interconnection sheet, handle the workpiece with care during the operation, and pay attention to proper shaking up and down in the solution to improve the processing and electroplating effect of the workpiece; the Kovar alloy interconnection sheet is silver-plated The operation steps include: (1) surface screening and wiping and cleaning, (2) combined degreasing, (3) pickling activation, (4) pre-plating, (5) pre-plating silver, (5) silver electroplating and (5) electrochemical passivation, until unloading, dehydration, drying, inspection, The final packaging and storage. Specific steps are as follows:
[0023] ⑴ Surface screening and wiping cleaning: According to the size of the required interconnection piece, select qualified workpieces from the cut 0.02mm thick Kovar alloy interconnection pieces, and carry out workpiece finishing and surface cleaning to ensure flatness and no c...
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