Figure 9
The image contains three microscopic images side by side. The first column shows the corrugated hose, the second column shows the pressure-bearing section, and the third column shows the copper tube. Each row represents a different sample, labeled as 1, 4, 5, and 6. The images display the surface texture and possible corrosion or changes after 168 hours of immersion.Microscopic image of the sample after 168 hours of immersion. Source (s): Authors’ own work