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Method for preparing titanium surface black oxidation titanium film

A titanium oxide film, black technology, applied in the direction of surface reaction electrolytic coating, electrolytic coating, coating, etc., can solve the problem that black titanium oxide film cannot be obtained, and achieve the effect of low cost and simple preparation process

Inactive Publication Date: 2008-05-14
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] With titanium oxide as the target material, the titanium oxide film can also be deposited on the titanium surface by radio frequency sputtering deposition process and electron beam evaporation titanium oxide and other physical vapor deposition techniques, but the black titanium oxide film can also not be obtained.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] The sample made of industrial titanium material TA1 is heated and oxidized in the atmosphere, and a titanium oxide film with a thickness greater than 2 μm is formed on the surface. Wash the sample with water and dry it, then place it in a vacuum chamber, heat the sample under a vacuum condition with a vacuum degree higher than 5 Pa, keep it at 300°C for 50 minutes, then cool it down, and take it out when the temperature is lower than 50°C Like this, at this time, a black titanium oxide film with a thickness of 0.5 to 10 μm is formed on the titanium surface.

Embodiment 2

[0014] The sample made of Ti6Al4V titanium alloy is treated with anodic oxidation in phosphoric acid solution to form a titanium oxide film with a thickness greater than 0.01 μm on its surface. Wash the sample with water and dry it, then put it into a vacuum chamber, and under the vacuum condition with a vacuum degree higher than 5Pa, pass inert gas argon to heat the sample, keep it at 200°C for 300 minutes, and then cool it down. When the temperature was lower than 50° C., the sample was taken out, and at this time, a black titanium oxide film with a thickness of 0.01 to 0.02 μm was formed on the titanium surface.

Embodiment 3

[0016] The sample made of TC11 titanium alloy was treated with micro-arc oxidation to form a titanium oxide film with a thickness greater than 10 μm on its surface. Wash the sample with water, dry it, and then place it in a vacuum chamber. The vacuum degree is better than 5×10 -2 Under the vacuum condition of Pa, heat the sample, keep it at 1000°C for 1 minute, then cool down, and take out the sample when the temperature is lower than 50°C. At this time, a black titanium oxide film with a thickness greater than 3 μm is formed on the titanium surface.

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Abstract

The invention discloses the preparation method of black titanium oxide film at titanium surface. The preparation process is: after atmospheric oxidation, anodized or micro-arc oxidation, a titanium oxide film with more than 0.01Mum thickness is generated at the surface of a clean titanium or titanium alloy specimen. After washing and drying, the specimen which generates the titanium oxide film at surface is arranged in vacuum or non-oxidizing atmosphere for heat treatment, and then a black titanium oxide film is formed at the surface of the titanium. The invention is characterized by simple preparation method of generating black titanium oxide film at titanium surface, low cost and no pollution.

Description

technical field [0001] The invention relates to a method for treating the surface of a titanium material, in particular to a method for preparing a black titanium oxide film on a titanium surface. Background technique [0002] Titanium has the advantages of high specific strength, corrosion resistance, and high temperature resistance. It is one of the key supporting materials for petrochemical, aerospace, marine, and national defense industries. On the other hand, the application of biomaterials and daily necessities such as mobile phone casings and IT peripherals is also expanding. In these application fields, in order to reduce radiant heat, improve concealment performance, and improve corrosion performance, etc., it is necessary to prepare a black oxide film on the titanium surface. [0003] As we all know, in the air at room temperature, an oxide film with a thickness of about 170nm can be formed on the surface of titanium after 2 hours. After 50 days, the oxide film i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C8/10C23C8/80C25D11/26
Inventor 奚正平李争显杜继红高广睿李晴宇王宝云严鹏黄春良
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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