Request for analysis: An automotive assembler was experiencing pinhole (or bubble) paint defects on their car hoods. The defects would appear as series of pinholes in long parallel lines on the painted hoods. Objectives: Methodology: Metallographic cross-sections were prepared of several pinhole defects. These were then examined using scanning electron microscopy (SEM) combined with energy dispersive X-ray (EDX) spectroscopy. Elemental X-ray intensity maps were collected in order to show the...
