Fig. 4From: Bronze preservation by using composite hydrogel coating-loaded corrosion inhibitorsScanning electron microscopy (SEM) images of the gel-coated mineralized copper bronze sheet surface at various magnifications. Scale bars in a, b, c, and d are 0.25, 0.25, 0.2, and 0.2 cm, respectively; a Surface SEM images at a magnification of 50X; b 500X; c, 1000X; and d 2000XBack to article page