Preparation method of nano apatite rod-like crystals on surface of pure titanium-based nano tube
A nanotube and apatite technology, applied in the field of biomedical engineering, can solve problems such as uneven structure, low crystallinity of coating, and low bonding strength
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Embodiment 1
[0023] Take a 1cm × 1cm pure titanium sheet and polish it with 400-mesh, 800-mesh, and 1000-mesh silicon carbide sandpaper until the surface is smooth. Sonicate in acetone, ethanol and deionized water for 10 minutes. After cleaning, wash it in 1 M HF and 5 M HNO 3 Chemical polishing was carried out for 30 s in the pickling solution mixed with a volume ratio of 1:1, and after taking it out, it was ultrasonically cleaned with deionized water for 10 min, and dried in the air for later use. Take 50 g of ethylene glycol and 1 g of deionized water respectively, add 0.25 g of ammonium fluoride to form an electrolyte solution of ethylene glycol / deionized water / ammonium fluoride system, use the smooth titanium sheet as the anode, and the platinum sheet as the cathode , anodized in the electrolyte for 2 h at a voltage of 30 V, the samples were taken out, washed with deionized water, and dried naturally. Observing its surface structure with SEM, it can be seen that a layer of tubular str...
Embodiment 2
[0025] Take a 1cm × 1cm pure titanium sheet and polish it with 400-mesh, 800-mesh, and 1000-mesh silicon carbide sandpaper until the surface is smooth. Sonicate in acetone, ethanol and deionized water for 10 minutes. After cleaning, wash it in 1 M HF and 5 M HNO 3 Chemical polishing was carried out for 30 s in the pickling solution mixed with a volume ratio of 1:1, and after taking it out, it was ultrasonically cleaned with deionized water for 10 min, and dried in the air for later use. Take 50 g of ethylene glycol and 1 g of deionized water respectively, add 0.25 g of ammonium fluoride to form an electrolyte solution of ethylene glycol / deionized water / ammonium fluoride system, use the smooth titanium sheet as the anode, and the platinum sheet as the cathode , anodized in the electrolyte for 3 h at a voltage of 20 V, the sample was taken out, washed with deionized water and dried naturally, a tubular structure perpendicular to the base surface was formed on the smooth pure tita...
Embodiment 3
[0027] Take a 1cm × 1cm pure titanium sheet and polish it with 400-mesh, 800-mesh, and 1000-mesh silicon carbide sandpaper in sequence until the surface is smooth, and then ultrasonically clean it with acetone, ethanol and deionized water for 10 minutes. 3Chemical polishing was carried out for 30 s in the pickling solution mixed with a volume ratio of 1:1, and after taking it out, it was ultrasonically cleaned with deionized water for 10 min, and dried in the air for later use. Take 50 g of ethylene glycol and 1 g of deionized water respectively, add 0.25 g of ammonium fluoride to form an electrolyte solution of ethylene glycol / deionized water / ammonium fluoride system, use the smooth titanium sheet as the anode, and the platinum sheet as the cathode , anodized in the electrolyte for 1 h at a voltage of 40 V, the samples were taken out, washed with deionized water and dried naturally. Put the above treated samples in a calcium nitrate alcohol solution with a concentration of 1 ...
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