Fig. 1From: Fusion-bonded epoxy composite coatings on chemically functionalized API steel surfaces for potential deep-water petroleum explorationMicrophotographs of API 5L X42 carbon steel after etching with Nital 2 %. a Optical microscopy (×200), and b scanning electron microscopy (secondary electrons, SE, ×1500). c Ferrite grain size distributionBack to article page