PSI - Issue 50

E.G. Zemtsova et al. / Procedia Structural Integrity 50 (2023) 307–313 Author name / Structural Integrity Procedia 00 (2019) 000 – 000

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3. Results and discussion 3.1. Investigation of the dependence of the oxide coating structure on the temperature of postsynthetic heat treatment When developing the synthesis of a TiO 2 coating on Ti, the post-synthetic heat treatment temperature varied from 150°C to 500°C with the step of 50°C. The structures were analyzed using SEM. The optimal temperature for post synthetic heat treatment of the film to create a perforated (island-like) oxide coating is found to be 400°C. At this temperature, the perforation areas are commensurate with the size of osteoblast cells, which positively affects the rate of osteoblast cell monolayer formation on the implant surface. Figure 1 shows a micrograph of the synthesized oxide coating, the morphology of which is characterized by micro- and nano-roughness. This two-level hierarchy, as noted earlier, significantly increases the bioactivity of the implant surface.

Fig. 1. Micrographs of a TiO 2 film with micro-roughness and nano-roughness.

The EDX method was used for rapid assessment of the qualitative composition of samples. According to EDX data (Fig.2), the elemental composition of the sample surface contains titanium and oxygen.

Fig.2. EDX spectrum recorded at the corresponding points sample with a TiO 2 coating on Ti.