Silver plating pitting: smart fixes for a stubborn defect

Summary for silver plating pitting Discussion

Pitting of silver plating on copper alloy is the issue Deen raised when he reported pits in a silver finish plated to about 150 mil thickness. Anders suggested checking the bath first: try carbon filtration, verify the brightener, and analyze the carbonate level because excessive carbonate may be contributing to the defect. The editor added that there are other related discussions on silver pits, pointing readers to letter 42418 for more background if Anders’ advice does not fully solve the problem. The thread does not identify a single confirmed root cause, but it points to bath maintenance and solution chemistry as the first practical places to investigate. In short, the discussion frames pitting as a process-control problem rather than a plating-thickness issue alone, with filtration, brightener condition, and carbonate buildup highlighted as likely suspects.