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. 2017 Nov 24;7:16270. doi: 10.1038/s41598-017-16465-4

Figure 1.

Figure 1

Scanning electron microscopy surface microstructure of the titanium rod (Ф2 mm × 7 mm). (A) before and (B) after PEO. Following PEO, the surface of the titanium rod became porous. X-ray diffraction patterns (inset in B) of the surface indicate that the porous surface layer is composed of PEO. PEO, plasma electrolytic oxidation.