Method for preparing bio-piezoelectric composite gradient coating on surface of titanium or titanium alloy
A piezoelectric composite and gradient coating technology, which is applied to surface reaction electrolytic coatings, devices for coating liquid on the surface, coatings, etc., can solve the problems of low piezoelectricity of bio-piezoelectric coatings, and promote bone The effect of growth and broad application prospects
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Embodiment 1
[0056] Step 1, prepare the titanium dioxide coating substrate on the pure titanium surface, and modify the HA powder at the same time:
[0057] Step 1.1: Polish the pure titanium surface step by step with SiC sandpaper of 400 mesh to 1500 mesh, then place it in acetone, absolute ethanol and deionized water for 10 minutes to remove oil, then pickle once, and finally use deionized Ultrasonic cleaning with water and absolute ethanol for 10 minutes each, and air-dried for later use;
[0058] Step 1.2, preparing a 500nm porous titanium dioxide coating on the pure titanium surface by micro-arc oxidation;
[0059] Step 1.3, dissolve 0.5g of silane coupling agent KH-550 in 100g of deionized water to make a solution of silane coupling agent KH-550, and immerse the pure titanium coated with titanium dioxide on the surface into the solution of silane coupling agent KH-550 1h, then take it out and rinse it with deionized water to obtain the modified titanium dioxide coated substrate.
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Embodiment 2
[0069] Step 1, prepare a titanium dioxide coating substrate on the surface of pure titanium, and modify the HA powder at the same time;
[0070] Step 1.1: Polish the pure titanium surface step by step with 400-1500-mesh SiC sandpaper, then place it in acetone, absolute ethanol, and deionized water for 20 minutes to remove oil, then pickle three times, and finally use deionized Water and absolute ethanol were ultrasonically cleaned for 20 min each, and dried for later use.
[0071]In step 1.2, a 20 μm porous titanium dioxide coating is prepared on the pure titanium surface by an anodic oxidation method.
[0072] Step 1.3: Dissolve 2g of silane coupling agent KH-570 in 100g of absolute ethanol to form a silane coupling agent KH-570 solution, and immerse the pure titanium coated with titanium dioxide on the surface into the silane coupling agent KH-570 solution for 3 hours , and then take it out and rinse it with deionized water to obtain the modified titanium dioxide coated sub...
Embodiment 3
[0086] Step 1, preparing a titanium dioxide coating substrate on the surface of the titanium alloy, and simultaneously modifying the HA powder;
[0087] Step 1.1: Polish the surface of the titanium alloy step by step with SiC sandpaper of 400 mesh to 1500 mesh, then place it in acetone, absolute ethanol and deionized water for 16 minutes to remove oil, then pickle twice, and finally use deionized Water and absolute ethanol were ultrasonically cleaned for 16 min each, and dried for later use.
[0088] In step 1.2, a 15 μm porous titanium dioxide coating is prepared on the surface of the titanium alloy by micro-arc oxidation.
[0089] Step 1.3: Dissolve 3.5g of silane coupling agent KH-570 in 100g of tert-butanol to form a solution of silane coupling agent KH-570, and immerse the titanium alloy coated with titanium dioxide on the surface into the solution of silane coupling agent KH-570 2h, and then take it out and rinse it with deionized water to obtain the modified titanium d...
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