Figure 5 SEM images of the reaction areas: (a) coating broken by lateral growth in soldering area, (b) coating cracked and migrated away, and (c) coating washed out.

Figure 5 SEM images of the reaction areas: (a) coating broken by lateral growth in soldering area, (b) coating cracked and migrated away, and (c) coating washed out.

Figure 5 SEM images of the reaction areas: (a) coating broken by lateral growth in soldering
area, (b) coating cracked and migrated away, and (c) coating washed out.

Figure 5 SEM images of the reaction areas: (a) coating broken by lateral growth in soldering
area, (b) coating cracked and migrated away, and (c) coating washed out.