Figure 10: P L-edge XANES spectra of the polyphosphate tribofilm in fluorescence yield (FY) and total electron yield (TEY) modes, respectively.
From: Chemical nature of alkaline polyphosphate boundary film at heated rubbing surfaces
TEY (10 nm) spectrum is obtained from the area after etching. The peak ‘a’ is typical characteristic of polyphosphate glass. The height of this peak (compared with peak c) is related to the polyphosphate chain length.
