Jet-Impingement Effects of Alumina-Nanofluid on Aluminum and Copper

Figure 8

Optical microscopy images of alloy 110 copper before and after (112-hour) test with (reference fluid, without nanoparticles) 50/50% ethylene glycol/water (magnification: 5000x). Preexisting pitting and seemingly clustered ones after treatment are circled.