Method for improving performance of micro-arc oxidation film of titanium alloy by adding nanometer alpha-Al2O3

A technology of micro-arc oxidation and titanium alloy, which is applied in the field of materials, can solve the problems of poor performance of titanium alloy micro-arc oxidation film layer, and achieve the effect of good corrosion resistance, small porosity and few microcracks

Inactive Publication Date: 2016-04-20
王晓芳
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: to provide a 2 o 3 A method for improving the performance of titanium alloy micro-arc oxidation film with elements, so as to solve the existing technical problems of poor performance of titanium alloy micro-arc oxidation film

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  • Method for improving performance of micro-arc oxidation film of titanium alloy by adding nanometer alpha-Al2O3
  • Method for improving performance of micro-arc oxidation film of titanium alloy by adding nanometer alpha-Al2O3
  • Method for improving performance of micro-arc oxidation film of titanium alloy by adding nanometer alpha-Al2O3

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Embodiment

[0016] Embodiment: A kind of adding nano-α-Al 2 o 3 The method of improving the performance of micro-arc oxidation film of titanium alloy by elements. The test material is Al-Cu alloy. The test uses self-made micro-arc oxidation equipment to carry out micro-arc oxidation on titanium alloy in silicate system. Arc oxidation voltage 600V, frequency 400Hz, duty cycle 30%, time 1h; the addition of nanometer α-Al 2 o 3 It is 3g / L.

[0017] Using the above one to add nano α-Al 2 o 3 The method of improving the properties of micro-arc oxidation film of titanium alloy by elements, and obtaining nano-α-Al 2 o 3 Analysis of the microscopic morphology of the micro-arc oxidation film, such as Figure 1~Figure 4 Nano α-Al with different content 2 o 3 SEM image of micro-arc oxidation film layer. It can be seen from the figure that when no additives are added, there are many micro-cracks on the surface of the micro-arc oxidation coating, the porosity is large, and there are few and ...

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Abstract

The invention provides a method for improving the performance of a micro-arc oxidation film of a titanium alloy by adding nanometer alpha-Al2O3. A test material is an Al-Cu alloy; during testing, a self-made micro-arc oxidation apparatus is used for micro-arc oxidation of the titanium alloy in a silicate system, a constant-voltage mode is used for treatment, micro-arc oxidation voltage is 600 V, micro-arc oxidation frequency is 400 Hz, a duty ratio is 30%, and micro-arc oxidation time is 1 h; and the concentration of the added nanometer alpha-Al2O3 is 3 g/L. According to the invention, when the concentration of the added nanometer alpha-Al2O3 is 3 g/L, the microscopic morphology of the film is substantially improved and the comprehensive performance of the film is improved.

Description

technical field [0001] The invention belongs to the field of material technology, in particular to a kind of nanometer α-Al 2 o 3 Elements improve the performance of micro-arc oxidation film on titanium alloy. Background technique [0002] Micro-arc oxidation (MAO) technology is a surface treatment technology with low environmental pollution, easy operation and high treatment efficiency. It puts titanium, magnesium, aluminum and their alloys in the electrolyte, and through the joint action of high temperature and high pressure, thermochemistry, plasma chemistry and electrochemistry, spark discharge is generated on the surface of the material to form a ceramic film in situ. The resulting ceramic film is dense, has good bonding force with the substrate, and has good properties such as wear resistance, corrosion resistance, high temperature impact resistance and electrical insulation. [0003] At present, researchers are mainly studying the effects of additives in the electr...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/26C25D15/00
Inventor 王晓芳
Owner 王晓芳
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