[Analysis Case] Investigation of Defects on Plastic Grill Surface

For some reason, the Cu plating has grown abnormally! It is assumed that Ni plating has been applied on top of it!

We would like to introduce the defect investigation conducted on the plastic grill surface at our company. In the surface observation, it was noted that some defects extend from the surface, and there are traces that appear to be where the protruding parts have broken off. The center of these traces is Cu, with Ni detected around it. In the cross-sectional observation, the voids within the Cu area were large, and there were gaps in the Cu/plastic just below the defect and in the immediate vicinity of the defect, from which C (Mg, Si) was detected. As a result, we concluded that the defects likely occurred after the Cu plating experienced abnormal growth due to some cause (such as plastic depressions or impurities) and subsequently collapsed, with Ni plating applied on top. [Case Overview] ■ Surface Observation - Some defects extend from the surface. - Traces were observed where the protruding parts seem to have broken off. - The center of these traces is Cu, with Ni detected around it (according to EDX analysis). *For more details, please refer to the related links or feel free to contact us.

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