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Composite material and preparation method thereof

A technology of composite materials and substrates, applied in electrolytic coatings, coatings, surface reaction electrolytic coatings, etc., to achieve beautiful decorative effects and increase value

Inactive Publication Date: 2010-01-06
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method cannot provide a variable multi-color effect for the anodized film of titanium metal

Method used

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  • Composite material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

preparation example Construction

[0017] The preparation method of the composite material provided by the present invention includes forming an oxide film layer with uneven thickness on at least one metal surface of the substrate, and the oxide film layer has different colors with different thicknesses.

[0018] According to the preparation method provided by the present invention, preferably, the oxide film layer is formed by anodic oxidation; the metal is pure titanium or titanium alloy.

[0019] According to the preparation method provided by the present invention, preferably, the anodic oxidation method includes, under anodic oxidation conditions, bringing at least one metal surface of the substrate into contact with an electrolyte, using the substrate as an anode, Anodizing is performed by using a conductive material that does not react with the electrolyte as a cathode, and the conditions of the anodizing are changed to make the thickness of the obtained anodized film layer uneven. Wherein, the cathode c...

Embodiment 1

[0039] Workpiece: 25×50mm pure titanium sheet

[0040] 1. Pretreatment

[0041] (1) polishing

[0042] Using electrochemical polishing, immerse the workpiece in the electrolyte at 20°C as the anode, and use stainless steel as the cathode, at 30A / dm 2 Under the current density, electrolysis for 3 minutes for polishing, so that the workpiece can obtain a smooth and bright surface. Among them, the electrolytic solution is an aqueous solution containing 40% by weight of chromic anhydride and 10% by weight of hydrofluoric acid.

[0043] Clean the workpiece with clean water after polishing.

[0044] (2) Sandblasting

[0045] The 9060 (7660) SA sandblasting machine produced by Dongguan Jichuan Machinery Equipment Co., Ltd. was used to sandblast the polished workpiece. Clean the workpiece with clean water after sandblasting.

[0046] (3) Degreasing

[0047] At room temperature, immerse the sandblasted workpiece in a chemical degreasing solution for 5 minutes for degreasing. The...

Embodiment 2

[0068] Workpiece: 25×50mm pure titanium sheet

[0069] 1. Pretreatment

[0070] The workpiece was pretreated according to the pretreatment method described in Example 1.

[0071] 2. Anodizing

[0072] Contain electrolytic solution in electrolyzer, the electrolytic solution that adopts is identical with embodiment 1.

[0073] Immerse the workpiece after the above pretreatment in the electrolyte of the electrolytic cell, take the workpiece as the anode, and use the stainless steel plate as the cathode, the initial voltage is 30V, the end voltage is 45V, the boosting time is 50 seconds, and in the electrolytic solution Anodizing is carried out at a temperature of 25°C, while the workpiece is moved upwards from the electrolyte into the air at a speed of 1mm / sec. When anodizing for 50 seconds, the workpiece is completely removed from the electrolyte, and the reaction is over.

[0074] Take out the workpiece and clean it.

[0075] 3. Post-treatment of anodized film layer

[00...

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Abstract

The invention provides a composite material, the composite material comprises a substrate, at least one surface of the substrate is metal, the thickness of the metal is 0.8 micron at least, the surface of the metal is an oxide film layer, wherein, the thickness of the oxide film layer is uneven, and the color of the oxide film layer is different along with the difference of the thickness. The invention further provides a preparation method of the composite material. The surface of the composite material can obtain variable multi-color effect according to the composite material and the preparation method in the invention, thereby leading the composite material to obtain beautiful decorative effect and improving value of products.

Description

technical field [0001] The invention relates to a composite material and a preparation method of the composite material. Background technique [0002] Titanium and titanium alloys have excellent characteristics such as non-magnetic, high melting temperature, small thermal expansion coefficient, biological inertness, high specific strength, fracture resistance, and fatigue resistance. They are active metals that can quickly form oxide films like magnesium alloys and aluminum alloys , and can make up for the deficiency that aluminum alloys and magnesium alloys cannot be used under conditions higher than 425°C. Therefore, titanium and titanium alloys are widely used in cutting-edge science and technology fields of national defense, especially in cutting-edge science and technology fields such as aviation, aerospace, and nuclear reactors. In recent years, with the improvement of people's living standards, more and more titanium and titanium alloys are also used in civilian prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/26B44D5/00
Inventor 赵惠玲赵敬棋
Owner BYD CO LTD
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