XPS research of floor oxidation of steel carbides: Fullerenes, Nanotubes and Carbon Nanostructures: Vol 0, No 0
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XPS research of floor oxidation of steel carbides: Fullerenes, Nanotubes and Carbon Nanostructures: Vol 0, No 0


Summary

Steel carbides MC (HfC, NbC, ZrC, TaC and TiC) that have been uncovered to air underneath the ambient temperature situation for a time period have been characterised by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), excessive decision transmission electron microscopy (HRTEM) and Raman. Contemporary MC samples uncovered to the air for various time (recent, sooner or later, one week and one quarter) illustrated sudden oxidation diploma of the surfaces. XRD checks supplied very restricted data, because the oxidation course of occurred from the floor on the nanometer scale. Nevertheless, the XPS checks supplied extra complete data for the MOx (HfO2, ZrO2, Nb2O5, Ta2O5 and TiO2) movie and MC (HfC, NbC, ZrC, TaC and TiC) interlayer. In the meantime, the HRTEM and Raman checks might give some further or supporting data for XPS checks, when the samples have been uncovered to the air for longer time (one week or one quarter). In the meantime, this analysis is the primary to indicate that the oxidation progress of the steel surfaces of HfC, NbC, ZrC, TaC and TiC can happen in air underneath the ambient temperature situation and the oxidation movie is about 2–5 nm. In the meantime, a brand new oxidation mechanism of steel carbides MC (HfC, NbC, ZrC, TaC and TiC) uncovered to air underneath the ambient temperature situation can also be proposed, contemplating the obtained Raman, TEM and XPS outcomes that might clearly verify the formation of HfO2 and free carbon.

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