Fig. 11: Extended simplified pixel activity-level distribution (sPAD) of streak-linked particles.
From: Intermetallic particles trigger streaking corrosion in AA7075-T6

a sPAD of a steak-linked particle from the sample in Fig. 1, and b sPAD of a streak-linked particle from the sample in Fig. 6 both show arrest of activity increase and resumption at a later time when they linked to a propagating streak. The dashed magenta line in the simplified pixel activity distribution plots indicates when the propagating streak connected to the IMPs and also mark the beginning of the near-horizontal behaviours.