Fig. 12From: Toward TiO2 Nanofluids—Part 2: Applications and ChallengesSEM and EDX of cutting edge [122]. At a cutting speed of 1500 rpm, feed rate of 0.02-mm tooth, and axial depth of 0.1 mm using nanoparticle-based coolant at a cutting distance of 180 mm (×60 magnification). Reproduced with permission from SpringerBack to article page