Unlocking the Synergistic Impact of Laser Texturing and Ti3C2Tx MXene Coatings - Substrate-Specific Tribological Insights

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Data for the Main Article: Figure 1. Schematic illustration of the overall idea. Light microscopy images from laser-textured AISI 304 steel samples. Figure 2. Coefficient of friction (COF) vs. time curves for the polished AISI 304 steel reference (SRef) and steel samples Figure 3. Coefficient of friction (COF) vs. time records for the polished TiAl6V4 substrates (TRef) and TiAl6V4 samples. Figure 4. Laser confocal microscopy measurement procedure. Figure 5. Exemplary scanning electron microscopy images. Figure 6. Scanning electron microscopy images and EDX point analyses on the wear track together with Corresponding Raman spectra for the AISI 304 steel and TiAl6V4 surfaces. Figure 7. Focused ion beam (FIB) cross-section of an MXene-coated TiAl6V4 and steel sample with the corresponding position for FIB cutting in the center of the wear track as well as the prepared TEM lamella. Figure 8. Transmission electron microscopy (TEM)-EDX analysis for MXene-coated steel and TiAl6V4 surfaces Figure 9. High-resolution TEM images of a wear track in the AISI 304 steel sample with a 6 µm line-like laser texture and MXene-coated and TiAl6V4 sample with a laser pocket (15 µm line-like pattern with MXene coating) revealing a demixing of the MXenes with a clearly visible carbon layer in the middle of the pocket. Data for the Supporting Information: Figure 1: Atomic illustration of Ti3C2Tx Table 1: Summary of the used sSample labeling of study portfolioin this study. Table 2: Average depth values for each textured sample in the scope of thethis study. Figure 2: Selected areas for Raman measurements discussed in the mail article Figure. 6 Figure 3: Bright-field image of multi-layer MXenes embedded in the laser-pocket of TiAl6V4 sample shown in Figure 7a2 with detail of demixing with carbon and MXene layers. Figure 4: Energy dispersive spectroscopy results for the laser pocket in Figure 7a2 that shows a) pronounced carbon peak inside the pocket, b) notable titanium and carbon signals in the MXene layer as well as c) titanium and vanadium peaks for the TiAl6V4 substrate . Figure 5: Bright-field image of MXene layers in laser-pocket of AISI 304 sample, shown in Figure 7b2 illustrating the ongoing bending and folding of the MXene layers.

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