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Aluminum alloy electroplating product and preparation method thereof

A technology for aluminum alloys and products, which is applied in the field of aluminum alloy electroplating products and its preparation, can solve the problems of poor appearance of aluminum materials, and achieve the effect of excellent corrosion resistance

Inactive Publication Date: 2012-11-14
东莞市闻誉实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The aluminum material obtained by this method is obviously poor in appearance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The aluminum alloy plate pretreated according to a conventional method is immersed in a plating solution with a temperature of 35° C. as a cathode, and the concentration of iron ions in the plating solution is 0.75 mol / liter, and the concentration of zinc ions is 0.35 mol / liter; Use a graphite plate as the anode; connect the DC power supply, the current density is 4 amps / dm2, and electroplate for 6 minutes; stop the electroplating, take out the aluminum alloy plate deposited with the iron-zinc alloy, and rinse it with deionized water until no acid radical ions are detected. out to obtain an iron-zinc alloy layer with a thickness of 12 microns.

Embodiment 2

[0044] The aluminum alloy plate containing the iron-zinc alloy layer obtained in Example 1 is immersed in a plating solution with a temperature of 40° C. as the cathode. The concentration of palladium ions in the plating solution is 0.04 mol / liter, and the concentration of rhodium ions is 0.02 mol. / liter; the palladium-rhodium alloy plate coated with metal titanium is used as the anode; the DC power supply is connected, and the current density is 2 amps / dm2, and the electroplating is performed for 5 minutes; the electroplating is stopped, and the iron-zinc alloy layer containing the palladium-rhodium alloy is taken out. The aluminum alloy plate is washed with deionized water until no acid radical ions are detected, and a palladium-rhodium alloy layer with a thickness of 3 microns is obtained.

Embodiment 3

[0046] The aluminum alloy plate containing the iron-zinc alloy layer and the palladium-rhodium alloy layer obtained in Example 2 is immersed in a plating solution with a temperature of 35° C. as the cathode, the concentration of titanium ions in the plating solution is 0.02 mol / liter, and the rhodium ions The concentration is 0.006 mol / liter; the titanium-bismuth alloy plate is used as the anode; the DC power supply is connected, the current density is 1 ampere / square decimeter, and the electroplating is performed for 7 minutes; the electroplating is stopped, and the iron-zinc alloy layer deposited on the titanium-bismuth alloy is taken out The aluminum alloy plate with the palladium-rhodium alloy layer is washed with deionized water until no acid radical ions are detected, and a titanium-bismuth alloy layer with a thickness of 2 microns is obtained.

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Abstract

The invention relates to electroplating products, and in particular to an aluminum alloy electroplating product which takes an aluminum alloy as a base material and a preparation method thereof. The aluminum alloy electroplating product comprises an aluminum alloy base material and an electroplating metal layer formed on the surface of the base material, wherein the electroplating metal layer sequentially comprises an iron-zinc alloy layer, a palladium-rhodium alloy layer, a titanium-bismuth alloy layer and a chromium layer from interior to exterior. The method for preparing the aluminum alloy electroplating product comprises the following steps of: sequentially electroplating to form the iron-zinc alloy layer, the palladium-rhodium alloy layer, the titanium-bismuth alloy layer and the chromium layer on the surface of the aluminum alloy base material. According to the aluminum alloy electroplating product, nickel does not participate in the production process, and the aluminum alloy electroplating product has the advantages of excellent corrosion resistance, wear resistance and cold and thermal shock resistance.

Description

technical field [0001] The invention relates to an electroplating product, in particular to an aluminum alloy electroplating product with an aluminum alloy as a base material and a preparation method thereof. Background technique [0002] Aluminum alloy is widely used in aviation, aerospace, transportation, building materials, petroleum, chemical industry, electronics, electric power, national defense and other fields due to its light weight, easy forming and processing, good electrical and thermal conductivity and other excellent properties. Aluminum is easily oxidized in the atmosphere, and as a typical amphoteric metal, it is also easily corroded in acidic and alkaline environments; on the other hand, aluminum alloys also have disadvantages such as low surface hardness and poor wear resistance, so they are used Being very limited, it is necessary to carry out surface treatment to improve the aforementioned situation in order to make the application range of aluminum alloy...

Claims

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Application Information

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IPC IPC(8): B32B15/01C25D5/12
Inventor 叶伟炳
Owner 东莞市闻誉实业有限公司