However, the rectangularity of the three materials did not show a significant trend throughout the friction process, as shown in Figure 10 e.
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Study of Tribological Properties and Evolution of Morphological Characteristics of Transfer Films in PTFE Composites Synergistically Reinforced with Nano-ZrO<sub>2</sub> and PEEK Particles.
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The sentences
The individual transfer film areas of Nano-ZrO 2 /PTFE and Nano-ZrO 2 /PEEK/PTFE showed a trend of increasing first and then decreasing.
The uniformity of the two transfer films with added nanoparticles showed an increasing trend at the beginning of the friction.