Method for preparing super-hydrophobic surface on titanium substrate
A technology of super-hydrophobic surface and titanium substrate, which can be applied to devices for coating liquids on surfaces, special surfaces, coatings, etc. It can solve the problems of complex process, difficult to realize industrialized production, special equipment requirements, etc., and achieve increased surface roughness. degree of effect
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Embodiment 1
[0019] 1.1 Take 100 ml of gold-tin alloy plating solution, use the titanium substrate as the negative electrode, and the platinum-plated titanium mesh as the positive electrode, and perform electrochemical deposition in a two-electrode system. The electrode working area is 1cm2, the deposition current is 0.0005A; the deposition temperature is 50 ℃, the deposition time is 2000s, after the electrodeposition is completed, the titanium substrate is taken out, rinsed repeatedly with deionized water, and dried with nitrogen gas to obtain a titanium substrate covered with a gold-tin alloy film on the surface.
[0020] 1.2 Take 100 ml of concentrated nitric acid with a concentration of 70%, immerse the gold-tin alloy / titanium material prepared in 1.1 into the concentrated nitric acid solution, soak it at room temperature for 5 days, take it out, rinse it repeatedly with a large amount of deionized water, and blow it dry with nitrogen , a titanium substrate covered with a nanoporous gol...
Embodiment 2
[0026] 2.1 Take 100 ml of gold-tin alloy plating solution, use the titanium substrate as the negative electrode, and the platinum-plated titanium mesh as the positive electrode, and perform electrochemical deposition in a two-electrode system with an electrode working area of 1 cm 2 , the deposition current density is 0.0005A; the deposition temperature is 40°C, and the deposition time is 1000s. After the electrodeposition, the titanium substrate is taken out, rinsed repeatedly with deionized water, and dried with nitrogen to obtain a gold-tin alloy film covering the surface. titanium base.
[0027] 2.2 Take 100 ml of concentrated nitric acid with a concentration of 70%, immerse the gold-tin alloy / titanium material prepared in 2.1 into the concentrated nitric acid solution, soak it at room temperature for 5 days, take it out, rinse it repeatedly with a large amount of deionized water, and blow it dry with nitrogen , a titanium substrate covered with a nanoporous gold film ca...
Embodiment 3
[0030] 3.1 Take 100 ml of gold-tin alloy plating solution, use the titanium substrate as the negative electrode, and the platinum-coated titanium mesh as the positive electrode, and perform electrochemical deposition in a two-electrode system with an electrode working area of 1 cm 2 , the deposition current density is 0.0006A; the deposition temperature is 45°C, and the deposition time is 1500s. After the electrodeposition, the titanium substrate is taken out, rinsed repeatedly with deionized water, and dried with nitrogen to obtain a gold-tin alloy film covering the surface. titanium base.
[0031] 3.2 Take 100 ml of concentrated nitric acid with a concentration of 70%, immerse the gold-tin alloy / titanium material prepared in 3.1 into the concentrated nitric acid solution, soak it at room temperature for 5 days, take it out, rinse it repeatedly with a large amount of deionized water, and blow it dry with nitrogen , a titanium substrate covered with a nanoporous gold film ca...
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