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Aluminum/titanium composite board surface micro-arc oxidation film and preparation method thereof

A micro-arc oxidation and composite plate technology, applied in anodizing, surface reaction electrolytic coating, electrolytic coating, etc., can solve the problems of crevice corrosion and galvanic corrosion at welding crevices, achieve good protection, good repeatability, The effect of uniform and dense coating

Inactive Publication Date: 2015-08-19
GUANGXI UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a micro-arc oxidation on the surface of an aluminum / titanium composite plate by using micro-arc oxidation technology to solve the problems of serious crevice corrosion and galvanic corrosion at the welding gap in the service environment of the aluminum / titanium composite plate Membrane and its preparation method

Method used

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  • Aluminum/titanium composite board surface micro-arc oxidation film and preparation method thereof
  • Aluminum/titanium composite board surface micro-arc oxidation film and preparation method thereof
  • Aluminum/titanium composite board surface micro-arc oxidation film and preparation method thereof

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Embodiment 1

[0022] A method for preparing a micro-arc oxidation film on the surface of an aluminum / titanium composite plate, comprising the following steps:

[0023] 1. Pretreatment: After the aluminum / titanium composite plate sample is polished step by step with sandpaper, it is ultrasonically cleaned in acetone for 15 minutes, and air-dried at room temperature;

[0024] 2. Prepare the coating: take the aluminum / titanium composite plate sample as the anode and the stainless steel plate as the cathode, immerse the anode of the aluminum / titanium composite plate sample in the electrolyte, and then apply a pulse voltage between the cathode and the anode, positive The voltage is 360V, the negative voltage is 0V, and the forward current density is 10A / dm 2 , the negative current density is 0, the frequency is 300Hz, and the positive and negative duty cycle is 10%. The treatment temperature is lower than 60°C, and the treatment time is 30 minutes to obtain a micro-arc oxidation film on the sur...

Embodiment 2

[0027] A method for preparing a micro-arc oxidation film on the surface of an aluminum / titanium composite plate, comprising the following steps:

[0028] 1. Pretreatment: The aluminum / titanium composite plate sample is polished step by step with sandpaper, then ultrasonically cleaned in acetone for 15 minutes, and air-dried at room temperature;

[0029] 2. Prepare the coating: take the aluminum / titanium composite plate sample as the anode and the stainless steel plate as the cathode, immerse the anode of the aluminum / titanium composite plate sample in the electrolyte, and then apply a pulse voltage between the cathode and the anode, positive The voltage is 450V, the negative voltage is 0V, and the forward current density is 10A / dm 2 , the negative current density is 0, the frequency is 500Hz, and the positive and negative duty cycle is 12%. The treatment temperature is lower than 60°C, and the treatment time is 30 minutes, and the micro-arc oxidation film on the surface of th...

Embodiment 3

[0032] A method for preparing a micro-arc oxidation film on the surface of an aluminum / titanium composite plate, comprising the following steps:

[0033] (1) Pretreatment: The aluminum / titanium composite plate sample was polished step by step with sandpaper, then ultrasonically cleaned in acetone for 15 minutes, and air-dried at room temperature;

[0034] (2) Prepare the coating: take the aluminum / titanium composite plate sample as the anode and the stainless steel plate as the cathode, immerse the anode of the aluminum / titanium composite plate sample in the electrolyte, and in the constant current mode, the forward current density is 10A / dm 2 , the negative current density is 0A / dm 2 , the frequency is 500Hz, and the positive and negative duty cycle is 10%. The treatment temperature is lower than 60°C, and the treatment time is 30 minutes, and the micro-arc oxidation film on the surface of the aluminum / titanium composite plate is obtained. The film thickness: the thickness...

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Abstract

The invention discloses an aluminum / titanium composite board surface micro-arc oxidation film and a preparation method thereof. The oxidation film is obtained simultaneously on the surfaces of the two sides of a Ti / Al composite board through one-time micro-arc oxidation treatment. The preparation method of the oxidation film specifically comprises the following steps: taking a composite board sample obtained by explosive welding of an Al base plate and a Ti clad plate as an anode and a stainless steel plate as a cathode, immersing the Al / Ti composite board sample serving as the anode in electrolyte, and treating by using a constant voltage mode or a constant current mode. The oxidation film and the method have the advantages that: 1, the prepared micro-arc oxidation film coating is excellently bonded with a substrate, is uniform and compact and shows superior anti-oxidation performance, corrosion resistance, wear resistance and the like; 2, the preparation method can improve the corrosion resistance of a weld seam, the process is simple and has good repeatability, large-area preparation can be realized, and a guide effect is provided for micro-arc oxidation treatment of a heterogeneous metal composite material.

Description

technical field [0001] The invention relates to the field of a ceramic oxide film on the surface of an aluminum / titanium composite plate, in particular to a micro-arc oxidation film on the surface of an aluminum / titanium composite plate and a preparation method thereof. Background technique [0002] The aluminum / titanium composite plate is a layered composite plate metal prepared by coating a layer of titanium alloy with strong corrosion resistance and oxidation resistance on the surface of the aluminum alloy by the explosive welding composite method, and has the low specific gravity and high thermal conductivity of aluminum. The high temperature resistance and corrosion resistance of titanium and titanium have very broad application prospects in aerospace, nuclear industry, petrochemical and other fields. During the explosive welding process, the plastic deformation, melting and diffusion of the metal occur in the bonding zone, which leads to the formation of metallurgical ...

Claims

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Application Information

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IPC IPC(8): C25D11/04C25D11/26
Inventor 李伟洲陈泉志杨文芬史和生曾建民唐仕光
Owner GUANGXI UNIV
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