Method for preparing HA-containing biological composite film layer through ultrasonic-assisted titanium alloy micro-arc oxidation hydro-thermal treatment
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A bio-composite membrane, micro-arc oxidation technology, applied in coatings, surface reaction electrolytic coatings, electrolytic coatings, etc., to achieve the effect of improving corrosion resistance and wear resistance, improving corrosion resistance, and high bonding strength
Pending Publication Date: 2022-02-11
江苏通和生物医药科技有限公司
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[0007] The purpose of the present invention is to prepare a biological composite film on the surface of titanium alloy by combining ultrasonic-assisted micro-arc oxidation and hydrothermal treatment, which effectively solves the shortcomings of preparing titanium alloy biofilm by a single method, thereby improving the corrosion resistance and surface quality of titanium alloy. biological activity
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Embodiment approach 1
[0027] First, the preparation of the electrolyte: 6g / L sodium silicate, 1 g / L of calcium acetate, 0.8 g / l sodium sodium hydrogen sodium, 0.55 g / L sodium hydrogen phosphate, 3 ml / L propanol and 5 ml / L lactate, sodium In turn, poured into the deionized water to obtain an electrolytic solution.
[0028] Second, the preparation of the hydrothermal solution: 0.839 g / l NaOH was limited to dissolve in deionized water, the pH is 9, and then ultrasonic treatment for 30 min, resulting in a hydrothermal solution.
[0029]Third, the preparation of the micro-arc oxide film layer of ultrasound synergies: pretreatment (400 #, 800 #, 1000 # and 1500 # sandpaper water rubbing, using a titanium alloy material, then use acetone, alcohol and deionized water The titanium alloy of the sample was easily cleaned by the sample, and then the preparation) was placed in the electrolyte as an anode, the stainless steel plate was used as the cathode, and the micro-arc oxidation treatment was 15 m...
Embodiment approach 2
[0043] The present embodiment differs from the first embodiment that the electrolyte in the step one is from the concentration of 8 g / L sodium silicate, 2 g / L acetate, 1.5 g / L hexaposphatsolate solution, 1 g / L sodium dihydrogen phosphate Solution, 3 g / L sodium hydroxide, 3 ml / L propanol and 8 ml / L sodium lactate. Other parameters are identical to the implementation.
Embodiment approach 3
[0045] The present embodiment differs from the first embodiment to the electrolyte in the steps from the concentration of 10 g / L sodium silicate, 5 g / L acetate, 2 g / l hexagonophosphate solution, 4g / L phosphate dihydrogen sodium hydrogen sodium hydrogen sodium hydrogen phosphate solution, 5g / L sodium hydroxide, 2 ml / L propanol and 4.5 ml / L sodium lactate. Other parameters are identical to the implementation.
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Abstract
The invention discloses a preparation method of an HA biological composite film layer through ultrasonic and micro-arc oxidation titanium alloy surface hydro-thermal treatment. The method comprises the following steps: immersing a pretreated titanium alloy as an anode into a biological electrolyte, taking a stainless steel sheet as a cathode, carrying out micro-arc oxidation by using a direct-current pulse power supply and the optimized biological electrolyte, preparing a biological ceramic membrane layer, cleaning a sample, and drying the cleaned sample; and then placing the dried sample in a liner of a hydrothermal reaction kettle, dissolving NaOH into deionized water, adjusting the pH value, pouring the hydrothermal solution into the liner of the reaction kettle, and finally carrying out heat preservation treatment. The biological membrane layer obtained by combining ultrasonic synergistic micro-arc oxidation and hydrothermal treatment has high wear resistance and corrosion resistance of a micro-arc oxidation membrane layer and excellent biological activity of hydroxyapatite, and meanwhile, the ultrasonic synergism has an improvement effect on the thickness, element distribution and the like of the micro-arc oxidation membrane, so that the generation of hydroxyapatite can be promoted; and the morphology and distribution of hydroxyapatite are homogenized.
Description
Technical field [0001] The present invention relates to a method of preparing a biofilm layer surface on a titanium alloy. Corrosion resistance and surface biological activity and bone dudiating. Background technique [0002] Titanium and its alloys have good biocompatibility and excellent corrosion resistance, which has good application potential in the biological field. However, titanium alloys also have poor wear resistance, and the corrosion environment in the human body is extremely complicated, and corrosion resistance needs to be further improved. When as an implant, it does not function well, which is severely inhibited. It applies and develops in biomedical neighborhoods. Preparation of hydroxyapatite (HA) membrane is one of the main directions of current titanium alloy surface modification. The present invention is a composite biofilm layer containing HA by ultrasonic auxiliary micro-arc oxidation composite water heat treatment on the surface of the titanium alloy. [0...
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