OBRABOTKAMETALLOV MATERIAL SCIENCE Vol. 27 No. 1 2025 Ta b l e 4 Wear investigation for PGB1 Sr. No. Load [N] Speed [rpm] Time [min] Avg. Wear [µm] 1. 30 200 20 3.54 2. 30 500 50 42.35 3. 30 800 80 46.89 4. 50 200 20 57.35 5. 50 500 50 98.96 6. 50 800 80 100.78 7. 70 200 20 105.42 8. 70 500 50 110.54 9. 70 800 80 117.67 Fig. 2. Wear vs Sliding distance. PGB1 Investigation of the wear process of PGB1 as a function of load This section focuses on investigating the influence of 1 wt% bentonite clay on the wear resistance of the composite. As indicated in Table 4, the experiment aimed to assess wear as a function of sliding distance at a constant sliding speed of 2.0434 m/s and various contact load values. The objective of the analysis was to understand the impact of adding 1 % bentonite clay on the wear resistance of the composite under various loads. The results, presented in Fig. 2, show that wear increases with increasing contact load. This trend was observed for all the investigated samples. Comparison with the PGB0 composite (Fig. 2) demonstrates that the addition of 1 % clay leads to a reduction in wear, which is likely due to the action of clay particles as a solid lubricant and an increase in wear resistance under similar operating conditions. However, with increasing load, an increase in the wear of the PGB1 composite is observed. Influence of sliding speed on wear at a constant load of 20 N This section analyzes the influence of sliding speed on wear at a fixed contact load of 20 N. The results, presented in Fig. 3, indicate significant abrasive wear of the material. Wear increases with increasing sliding
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