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. 2019 Jan 9;24(2):224. doi: 10.3390/molecules24020224

Figure 9.

Figure 9

SEM image of PCM worn surfaces: (a) PTFE/CF (×1000); (b) PTFE/CF/Kl (×1000); (c) PTFE/CF (×3000); (d) PTFE/CF/Vl (×3000).