Figure 8
The figure contains two panels labeled (a) and (b), presenting surface morphology and elemental composition of the material. Panel (a) shows a grayscale microscopic image of the sample surface. The field of view appears smooth and uniform, with faint diagonal polishing marks and a few tiny scattered dark specks. A scale bar in the lower right corner is labeled “10 micrometers”, indicating the spatial reference of the micrograph. Panel (b) presents an energy-dispersive X-ray spectroscopy (E D S) spectrum plotted with a horizontal axis labeled “kiloelectron volts” ranging from 0 to 15 with an interval of 5 and the vertical axis labeled “c p s per electron volt”, ranging from 0 to 150 with an interval of 50. The spectrum is displayed as a yellow-filled curve on a blue background. Two dominant peaks labeled “F e” appear near low energies of 0.7 kiloelectron volts and around 6.5 kiloelectron volts, indicating iron as the primary element. Additional smaller labeled peaks correspond to “M n”, “C r”, “V”, “C o”, “S i”, O”, and “C u”, appearing mainly below 10 kiloelectron volts. Minor “C u” peaks are visible at higher energies, likely associated with the measurement setup.(a) SEM image; (b) EDS quantitative analysis image of newly polished Q235 steel at 298 K. Source(s): Authors’ own work