Titanium and titanium alloy surface anodic oxidation coloring method

An anodizing and titanium alloy technology, applied in the field of metal surface treatment, can solve the problems of single coloring effect, long production time, complicated process, etc., and achieve the effect of simplifying anodizing process, improving efficiency and simple process.

Inactive Publication Date: 2016-01-13
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this patent can obtain anodized films with rich colors, bright colors, good corrosion resistance and good decorative effects, the process is more complicated, and the production time is long and the cost is high.
Publication No. CN101812715 also discloses a black anodized film process. Although the patent obtains a black, uniform and firm anodized film, it can only form a single coloring effect

Method used

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  • Titanium and titanium alloy surface anodic oxidation coloring method
  • Titanium and titanium alloy surface anodic oxidation coloring method
  • Titanium and titanium alloy surface anodic oxidation coloring method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] This implementation provides a method for anodizing and coloring titanium surfaces, which specifically includes the following steps:

[0025] (1) At room temperature, place industrially pure titanium with a size of 10mm×10mm×0.2mm in acetone and ethanol solutions for ultrasonic vibration, take it out after 20 minutes of treatment, and then wash it with deionized water for later use.

[0026] (2) Add 2mL of hydrofluoric acid and 16mL of concentrated nitric acid in sequence to 200mL of deionized water to prepare an electrolytic polishing solution; put the pure titanium sheet after degreasing treatment into the electrolytic polishing solution, use the titanium sheet as the cathode, graphite The plate is an anode, the distance between cathode and anode is 10cm, the area ratio of cathode and anode is 1:2, the voltage is adjusted to 10V, and it is taken out after energizing treatment for 1min; the pure titanium after electropolishing is washed with deionized water successively...

Embodiment 2

[0030] This implementation provides a method for anodizing and coloring titanium surfaces, which specifically includes the following steps:

[0031] (1) Place the rectangular TC4 plate sample in acetone and ethanol solutions for ultrasonic vibration, take it out after 20 minutes of treatment, and then wash it with deionized water for later use.

[0032] (2) Add 6mL of hydrofluoric acid and 12mL of concentrated nitric acid to 200mL of deionized water in turn to prepare an electrolytic polishing solution; put the degreased titanium sheet into the electrolytic polishing solution, use the titanium sheet as the cathode, and graphite plate It is used as an anode, the area ratio of cathode and anode is 1:3, the distance between electrodes is 2cm, the voltage is adjusted to 3V, and it is taken out after 10 minutes of electrification treatment; the samples after electropolishing treatment are washed with deionized water successively, and then ultrasonicated in ethanol solution Wash for...

Embodiment 3

[0036] This implementation provides a method for anodizing and coloring titanium surfaces, which specifically includes the following steps:

[0037] (1) Place the TC4 titanium plate sample successively in acetone and ethanol solutions for ultrasonic vibration, take it out after 20 minutes of treatment, and then wash it with deionized water for later use.

[0038] (2) Add 4mL of hydrofluoric acid and 14mL of concentrated nitric acid to 200mL of deionized water in turn to prepare an electrolytic polishing solution; put the degreased titanium sheet into the electrolytic polishing solution, use the titanium sheet as the cathode, and graphite plate As an anode, the area ratio of cathode and anode is 1:2.5, the distance between them is 5cm, the voltage is adjusted to 5V, and it is taken out after 8 minutes of electrification treatment; the pure titanium after electropolishing treatment is cleaned with deionized water successively, and then ultrasonically cleaned in ethanol solution ...

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Abstract

The invention discloses a titanium and titanium alloy surface anodic oxidation coloring method and belongs to the technical field of metal surface treatment. The method includes the following steps that a cleaned commercial pure titanium sample is put in a solution with a proportion of HF: HNO3: H2O for electrolytic polishing; the cleaned and dried sample is put in a mixed solution of concentrated sulfuric acid and methanesulfonic acid for anodic oxidation treatment; and the sample obtained after being subjected to the anodic oxidation treatment is rapidly cleaned through ethyl alcohol and deionized water and then dried under the vacuum condition so that the colored sample can be obtained. Anodic oxide films in different colors are obtained through control over anodic oxidation voltage and treatment time, and the anodic oxide films are bright and uniform in color and luster and good in corrosion resistance.

Description

technical field [0001] The invention relates to a method for anodic oxidation and coloring of titanium and titanium alloy surfaces, belonging to the technical field of metal surface treatment. Background technique [0002] Titanium and titanium alloys have good mechanical and mechanical properties, low density, high stiffness, low hardness, high temperature resistance, and good corrosion resistance. They are widely used in aerospace, automotive, military, and chemical industries. Titanium and titanium alloys also have some inherent defects, such as low hardness, poor wear resistance, and poor thermal and electrical conductivity. When titanium is in contact with parts of other metal materials, due to the excessive potential difference, galvanic corrosion is very easy to occur, resulting in corrosion of the parts connected to it. In order to further improve the use characteristics of titanium and titanium alloys, it is necessary to carry out surface treatment and modification...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/26
Inventor 詹肇麟杨艳蓉付天琳崔昌兴刘忠李莉刘建雄
Owner KUNMING UNIV OF SCI & TECH
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