Electrochemical method for preparing HA/ZrO2 (hydroxylapatite/zirconia) gradient coating on surface of medical titanium
A hydroxyapatite and gradient coating technology, applied in the direction of coating, electrolysis process, electrolysis components, etc., can solve the problems of affecting the mechanical properties of the coating, poor coating dispersion, agglomeration of component particles, etc. Corrosion resistance and biocompatibility, mitigation of thermal expansion coefficient mismatch, uniform and dense coating effect
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[0025] Example 1
[0026] (1) Cut the medical pure titanium wire into 1×1×0.1cm titanium sheets; sand the titanium sheet with sandpaper until the surface is smooth and there is no mechanical processing trace; use absolute ethanol, acetone, and deionized water to mix Ultrasonic cleaning for 8min; then HF:HNO 3 : H 2 O=1:1:8 acid solution for acid etching; finally, use deionized water and ultrasonic cleaning for 8min. Pack the sample into the sample bag with tweezers and prepare for the experiment.
[0027] (2) The Ti sheet is the cathode working electrode, the platinum electrode is the counter electrode, the saturated calomel is the reference electrode, and the electrode spacing is 3 cm.
[0028] (3) Weigh 0.5781 g of anhydrous zirconium oxynitrate, dissolve with 100 ml of dilute nitric acid, then dilute the volume to 200 ml, place the beaker on a magnetic stirrer and stir, adjust the pH of the solution with ammonia water to 2.3, and finally obtain a uniform electrolyte. Th...
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[0033] Example 2
[0034] (1) Cut the medical pure titanium wire into 1×1×0.1cm titanium sheets; sand the titanium sheet with sandpaper until the surface is smooth and there is no mechanical processing trace; use absolute ethanol, acetone, and deionized water to mix Ultrasonic cleaning for 8min; then HF:HNO 3 : H 2 O=1:1:8 acid solution for acid etching; finally, use deionized water and ultrasonic cleaning for 8min. Pack the sample into the sample bag with tweezers and prepare for the experiment.
[0035] (2) The Ti sheet is the cathode working electrode, the platinum electrode is the counter electrode, the saturated calomel is the reference electrode, and the electrode spacing is 3 cm.
[0036] (3) Weigh 1.1562 g of anhydrous zirconium oxynitrate, dissolve it with 100 ml of dilute nitric acid, then dilute to 200 ml, place the beaker on a magnetic stirrer and stir, and adjust the pH of the solution to 2.3 with ammonia to obtain a uniform electrolyte. The electrolyte was pu...
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[0039] Example 3
[0040] (1) Cut the medical pure titanium wire into 1×1×0.1cm titanium sheets; sand the titanium sheet with sandpaper until the surface is smooth and there is no mechanical processing trace; use absolute ethanol, acetone, and deionized water to mix Ultrasonic cleaning for 8min; then HF:HNO 3 : H 2 O=1:1:8 acid solution for acid etching; finally, use deionized water and ultrasonic cleaning for 8min. Pack the sample into the sample bag with tweezers and prepare for the experiment.
[0041] (2) The Ti sheet is the cathode working electrode, the platinum electrode is the counter electrode, the saturated calomel is the reference electrode, and the electrode spacing is 3 cm.
[0042] (3) Weigh 1.7343 g of anhydrous zirconium oxynitrate, dissolve it with 100 ml of dilute nitric acid, then dilute to 200 ml, place the beaker on a magnetic stirrer and stir, and adjust the pH of the solution to 2.3 with ammonia water, and finally obtain a uniform electrolyte. The el...
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