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Technology for anodizing thick TA2 titanium alloy material film

An anodizing, titanium alloy technology, used in electrolytic coatings, surface reaction electrolytic coatings, coatings, etc.

Inactive Publication Date: 2018-06-01
XIAN AERO ENGINE CONTROLS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, domestic and foreign periodicals and magazines have no specific information on 8-10 micron thick film anodizing of TA2 titanium alloy.

Method used

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  • Technology for anodizing thick TA2 titanium alloy material film
  • Technology for anodizing thick TA2 titanium alloy material film

Examples

Experimental program
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Embodiment

[0037] 1) The present invention is a bath solution formula and anodization process method for TA2 titanium alloy thick film anodization. Anodize the XX03020-20-01 part.

[0038] 2) The bath formula is:

[0039] Sulfuric acid (H 2 SO 4 , ρ=1.84g / mL) according to 200mL / L preparation;

[0040] Phosphoric acid (H 3 PO 4 , ρ=1.7g / mL) according to 20mL / L preparation;

[0041] Ti 4+ <5 g / L;

[0042] The rest is distilled or deionized water.

[0043] Anodizing by pulse superposition: pulse voltage 200V, duty ratio 1 / 2;

[0044] Anodizing temperature: 6°C;

[0045] compressed air stirring;

[0046] Anodizing time (excluding slow start time and slow down time): 50min;

[0047] Slow start time: 1min;

[0048] Slow down time: 1min;

[0049] After energization, the voltage should rise to 80V within 1 minute, and the pulse superposition method should be used for anodizing. The pulse time is 0.5 seconds. The pulse superposition method should be used for anodizing.

[0050] 3) ...

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Abstract

The invention belongs to the field of material surface processing, and relates to a technology mainly used for anodizing a thick TA2 titanium alloy material film. The technology comprises the step ofanodizing. When anodizing treatment is conducted, a pulse superposition mode is adopted to conduct anodizing treatment, and the basic voltage of pulse superposition is 80V. The pulse voltage of anodizing treatment ranges from 180V to 220V, and the duty ratio of anodizing treatment is 1 / 2. The temperature of a bath solution in the anodizing process is 6+ / -2 DEG C. The reaction time of anodizing treatment comprises the slow start time, the anodizing time and the slow decrease time, wherein the slow start time is 1 minute, the anodizing time ranges from 50 minutes to 70 minutes, and the slow decrease time is 1 minute. The slow start time is the time period taken in the process that the zero voltage is increased to the basic voltage, and the slow decrease time is the time period taken in the process that the basic voltage is reduced to the zero voltage. The technology for anodizing the thick TA2 titanium alloy material film has the advantages that the thickness of the film can range from 8micrometers to 10 micrometers, the corrosion resistance can be obviously improved, and contamination caused by other metal impurities such as iron is avoided.

Description

technical field [0001] The invention belongs to the field of material surface treatment, and relates to a material anodization process, in particular to a process mainly for the anodization of a thick film of TA2 titanium alloy material. Background technique [0002] TA2 titanium alloy is industrially pure titanium, which is mainly used in chemical industry, shipbuilding and medical treatment for corrosion-resistant parts with working temperature below 350°C and little stress. It has many advantages such as high specific strength, light weight, strong heat resistance and corrosion resistance. If the surface of titanium alloy parts is polluted by iron ions during the preparation process, titanium and iron form a micro-battery in the dielectric, and under electrochemical action, hydrogen will penetrate into titanium, resulting in hydrogenation of titanium and becoming brittle, critical titanium alloy parts service life and safety. Anodizing titanium alloys enhances their cor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/26
CPCC25D11/26C25D11/024
Inventor 吴雨桥刘静周佳吴晓伟任可真马小昭
Owner XIAN AERO ENGINE CONTROLS
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