Nitrogen-doped titanium oxide coating and preparation method and application thereof
A technology of titanium oxide and nitrogen doping, which is applied in coating, surface reaction electrolytic coating, metal material coating technology, etc., can solve the problem of weakened biological activity, prone to bacterial infection, lack of antibacterial properties of titanium implants, etc. question
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Embodiment 1
[0047] (1) Ultrasonic pickling treatment is performed on a pure titanium metal sheet of 10mm×10mm×1mm. The pickling solution is mixed with hydrofluoric acid, nitric acid and ultrapure water at a volume ratio of 1:5:34; followed by deionization Ultrasonic cleaning of water to obtain a clean and uniform surface (see figure 1 shown). Micro-arc oxidation technology is used to in-situ oxidize the titanium metal surface to form a porous titanium oxide coating (calculated as MAO). The specific process conditions and parameters are shown in Table 1. The surface topography images obtained under the process parameters are shown in Figure 2a As shown, the results show that the titanium metal surface forms a porous structure;
[0048] Table 1 is the micro-arc oxidation process conditions and parameters in the present embodiment 1:
[0049] Electrolyte 0.2M sulfuric acid solution oxidation voltage 270V electric current 1.8A frequency 800Hz duty cycl...
Embodiment 2
[0057] Step (1) of this embodiment is the same as that of Embodiment 1, and its detailed description is omitted. (2) Plasma immersion ion implantation was performed on the porous titanium oxide coating obtained by treating the titanium metal surface with the micro-arc oxidation technique in the above-mentioned embodiment 1. The specific injection parameters are shown in Table 3; the surface topography obtained under the injection parameters is shown in Figure 3b As shown, it can be seen from the figure that the porous structure of the micro-arc oxidation coating surface is retained on the surface after nitrogen ion implantation;
[0058] Table 3 shows the nitrogen ion implantation parameters in Example 2:
[0059] local vacuum 4.0×10 -3 Pa
Injection voltage 30kV pulse width 30μs Pulse frequency 100Hz injection time 60min RF power 200W Nitrogen content 15scm
[0060] .
[0061] The nitrogen content of the nitrogen...
Embodiment 3
[0063] Step (1) of this embodiment is the same as that of Embodiment 1, and its detailed description is omitted. (2) Plasma immersion ion implantation was performed on the porous titanium oxide coating obtained by treating the titanium metal surface with the micro-arc oxidation technique obtained in the above-mentioned embodiment 1. The specific injection parameters are shown in Table 4; the surface topography obtained under the injection parameters is shown in Figure 3c As shown, it can be seen from the figure that the porous structure of the micro-arc oxidation coating surface is retained on the surface after nitrogen ion implantation;
[0064] Table 4 is the nitrogen ion implantation parameters in the present embodiment 3
[0065] local vacuum 4.0×10 -3 Pa
Injection voltage 30kV pulse width 30μs Pulse frequency 100Hz injection time 90min RF power 200W Nitrogen content 15 sccm
[0066] .
[0067] The content of...
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