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Surface anodization coloring treatment method for titanium and titanium alloy

A technology of anodizing and treatment method, applied in the direction of surface reaction electrolytic coating, electrolytic coating, coating, etc., can solve the problems of complex process steps and high cost, and achieve the effect of less process steps, no color change, and low cost

Inactive Publication Date: 2011-07-06
沈阳天贺新材料开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this patent application has the characteristics of high surface hardness, good bonding force and corrosion resistance, bright color, uniform and no variegated color, and good decorative effect of the colored anodized film, the process steps are still relatively complicated and the cost is also high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1. Put pure titanium in acetone solution for ultrasonic cleaning for 5 minutes, then put it in 5% sodium hydroxide solution for ultrasonic cleaning for 10 minutes, and rinse it for later use;

[0018] 2. Put the cleaned pure titanium into the pickling solution for pickling for 1 min, wherein the ratio of hydrofluoric acid: nitric acid: water is 1:3:8, and rinse it for later use after pickling;

[0019] 3. Put the treated pure titanium into the electrolyte, use stainless steel as the cathode, and pure titanium as the anode for anodic oxidation and coloring. The coloring process is as follows: the voltage is 18V, the distance between the cathode and the anode is 5cm, the area ratio of the cathode and the anode is 5:1, and the time is 1min. After coloring, rinse the pure titanium;

[0020] 4 Put the pure titanium into boiling deionized water, seal it for 15 minutes, and dry it.

[0021] The color retention test of anodized and colored pure titanium: put the anodized and ...

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PUM

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Abstract

The invention discloses a surface anodization coloring treatment method for titanium and titanium alloy, comprising the following technological process: firstly, putting titanium and titanium alloy sample pieces into an acetone solution and a caustic soda solution in sequence for cleaning oil stain, then cleaning with distilled water, drying, and putting the titanium and titanium alloy sample pieces into electrolyte for treatment, wherein the electrolyte is a mixed solution of phosphoric acid and sodium gluconate. The invention has the characteristics of simple technology, good binding force between an oxide film and a substrate, bright and uniform color and lower cost.

Description

technical field [0001] The invention relates to a metal surface treatment method, in particular to a treatment method for anodic oxidation and coloring of titanium and titanium alloy surfaces, and belongs to the technical field of C25D11 / 26 (2006.01) I in the international patent classification table. Background technique [0002] In order to expand the application field of titanium alloy, its surface must be modified. The existing surface treatment technologies for titanium and titanium alloys include: laser cladding surface treatment, surface deposition coating (CVD and PVD method), [0003] Thermal diffusion, surface nano-treatment and anodic oxidation treatment, among which the anodic oxidation treatment process is simple, the oxide film has good wear resistance, contact corrosion resistance and hydrogen embrittlement resistance, and is widely used in industrial production. Titanium and titanium alloy anodic oxidation film can show various colors on the surface with the...

Claims

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Application Information

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IPC IPC(8): C25D11/26
Inventor 高淑春徐国强胡金玲李玉海万智来
Owner 沈阳天贺新材料开发有限公司
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