Aluminum alloy surface easy-cleaning micro-arc oxidation ceramic membrane layer and preparation method thereof

A technology of aluminum alloy surface, micro-arc oxidation, applied in anodizing and other directions, can solve the problems of long time and high energy consumption in the preparation process of easy-cleaning ceramics, and achieve the effects of good oil resistance, high energy utilization rate and simple process

Inactive Publication Date: 2014-10-08
DALIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the preparation process of the existing easy-to-clean ceramics takes a long time and consumes a lot of energy, and can only be applied to a small number of fired products, which limits its application. Clean micro-arc oxidation ceramic coating and preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0012] Specific implementation mode 1: In this implementation mode, the micro-arc oxidation ceramic film layer on the surface of aluminum alloy is prepared by micro-arc oxidation, and the surface energy is greater than 73.1mJ / m 2 , polar molecular weight greater than 60.0mJ / m 2 , the residual amount of oil pollution per unit area A≤0.05×10 -4 g cm 2 Easy-to-clean micro-arc oxidation ceramic coating on the aluminum alloy surface.

[0013] Advantages of this embodiment: the surface energy of the easy-to-clean micro-arc oxidation ceramic film prepared in this embodiment is greater than 72.8mJ / m 2 , polar molecular weight greater than 58.0mJ / m 2 , the residual amount of oil pollution per unit area A≤0.05×10 -4 g cm 2 , The thickness of the film layer is 10-80μm, which has good oil resistance and self-cleaning ability.

specific Embodiment approach 2

[0014] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the thickness of the easy-to-clean micro-arc oxidation ceramic film on the surface of the aluminum alloy is 10 μm to 80 μm. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0015] Specific implementation mode three: the preparation method of the micro-arc oxidation ceramic coating on the surface of the aluminum alloy in this implementation mode is carried out according to the following steps:

[0016] With the aluminum alloy workpiece as the anode and the stainless steel plate of the electrolytic cell as the cathode, the anode of the aluminum alloy workpiece is immersed in the working solution, and then a bipolar pulse power supply is applied on both sides of the cathode and anode, and the forward voltage is 350V ~ 650V , The reverse voltage is 20V ~ 120V, the current density is 0.5A / dm 2 ~20A / dm 2 , the frequency is 200Hz-2000Hz, the duty ratio is 10%-40%, and the temperature is lower than 80°C, and the treatment is 3min-60min, and the easy-cleaning micro-arc oxidation ceramic film on the surface of the aluminum alloy is obtained.

[0017] In this embodiment, the micro-arc oxidation power source used is a bipolar pulsed micro-arc oxidation powe...

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Abstract

The invention discloses an aluminum alloy surface easy-cleaning micro-arc oxidation ceramic membrane layer and a preparation method thereof, and relates to an aluminum alloy surface ceramic membrane layer and a preparation method thereof. The invention aims at solving the problems that the existing easy-cleaning ceramic is long in preparation time, high in energy consumption, and limited in application as the existing easy-cleaning ceramic only can be applied to some products formed by sintering. The aluminum alloy surface easy-cleaning micro-arc oxidation ceramic membrane layer is prepared by micro-arc oxidation. The preparation method is as follows: by taking an aluminum alloy workpiece as an anode and a stainless plate of an electrolytic cell as a cathode, soaking the anode of the aluminum alloy workpiece in working liquid; and then, applying bipolar pulse power to the two sides of the cathode and the anode, carrying out micro-arc oxidization treatment to obtain the aluminum alloy surface easy-cleaning micro-arc oxidation ceramic membrane layer. The invention is used for the aluminum alloy surface easy-cleaning micro-arc oxidation ceramic membrane layer and the preparation method thereof.

Description

technical field [0001] The invention relates to a ceramic film layer on the surface of an aluminum alloy and a preparation method thereof. Background technique [0002] Ceramic products are widely used in our life because of their durability and exquisite texture. Cleaning the dirt of ceramics has naturally become an essential link. Common oil stains are mainly cortex based on palmitic acid and oleic acid, as well as vegetable oil, animal oil and mineral oil such as diesel oil and lubricating oil. The essence of washing is the process in which the detergent replaces the oil film from the surface of the object to be cleaned. In addition to the time-consuming and labor-intensive process of cleaning the oil stains on ceramic surfaces, the use of detergents can also cause adverse health and environmental effects. With the continuous enhancement of health awareness, people favor easy-to-clean ceramic products that can be cleaned without detergent, are oil-resistant, and self-c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/04C25D11/06
Inventor 吕鹏翔
Owner DALIAN UNIV
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