Composite material and preparation thereof

A technology of composite materials and manufacturing methods, applied in the field of high-corrosion-resistant chemical conversion coatings, can solve problems such as difficulty in obtaining and expanding uses, harm to the human body, use restrictions or prohibitions, etc., to achieve efficient manufacturing, high corrosion resistance and resistance to discoloration permanent, easy-to-manufacture effects

Inactive Publication Date: 2008-10-15
NIHON PARKERIZING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hexavalent chromium is harmful to the human body, and its use has been restricted or prohibited
In addition, it is difficult to obtain and expand the use of the nickel-phosphorus alloy plating material having such a colored chemical conversion protective film, especially the use in electronic and electrical equipment.

Method used

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  • Composite material and preparation thereof
  • Composite material and preparation thereof
  • Composite material and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0108] The above-mentioned nickel-phosphorus alloy plating A5052 material (thickness: 0.5 mm) was used as a base material. Prepared: containing fluozirconic acid as a component containing a main metal element, containing hydrofluoric acid as a component containing a halogen element, and containing chromium (III) fluoride as a component containing the first additional element, not containing nitrate ions, the pH Adjust to 4, adjust the temperature to 40° C., and have the chemical conversion treatment liquid having the composition shown in Table 1.

[0109] Immerse the above-mentioned base material in the above-mentioned chemical conversion treatment solution for 10 minutes, then take out the obtained composite metal material after chemical conversion treatment, wash with deionized water, and dry at a temperature of 120°C for 10 minutes . No warm water treatment. The analysis and evaluation results are shown in Table 2.

Embodiment 2

[0111] In the same manner as in Example 1, a composite material was manufactured, analyzed and evaluated. However, as shown in Table 1, the chemical conversion treatment liquid and treatment conditions were changed.

[0112] That is, in the chemical conversion treatment liquid, fluotitanic acid was used as the main metal element-containing component, the Ti concentration was changed to 150 ppm, the amount of hydrofluoric acid used was changed so that the F concentration was 300 ppm, and the concentration of chromium (III) fluoride was changed. The amount used was such that the Cr(III) concentration was 100 ppm, the pH of the chemical conversion treatment solution was changed to 3, the treatment temperature was changed to 60° C., and the treatment time was changed to 5 minutes.

[0113] The analysis and evaluation results are shown in Table 2.

Embodiment 3

[0115] Composite materials were produced in the same manner as in Example 1, and analyzed and evaluated. However, as described in Table 1, the composition and treatment conditions of the chemical conversion treatment liquid were changed.

[0116] That is, using fluozirconic acid as the main metal element-containing component, changing its usage amount so that the Zr concentration is 100ppm, and adding fluotitanic acid and adjusting the usage amount so that the Ti concentration is 100ppm, using hydrofluoric acid as the halogen-containing The composition of the elements was changed so that the concentration of F was 500ppm. Chromium (III) fluoride was used as a component containing the first additional element, and the quantity was changed so that the concentration of Cr(III) was 100ppm. The pH was changed to 4.5, the treatment temperature was changed to 50° C., and the treatment time was changed to 5 minutes.

[0117] The analysis and evaluation results are shown in Table 2. ...

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Abstract

The invention provides a composite material. The composite material is formed by implementing a chemical transformation treatment for a solid material which is provided with a Ni-P alloy coating, doesn't have coloring caused by the chemical transformation treatment or has less coloring, and has excellent corrosion resistance and discoloring resistance. The chemical transformation treatment is implemented for the Ni-P alloy coating on a substrate via adopting following chemical transformation treatment solution to form a chemical transformation capsula layer. The chemical transformation capsula layer is processed water washing so as to obtain the composite material. The chemical transformation treatment solution comprises main metal elements which comprise Zr and/or Ti and halogen, and pH is in the range of 2.0 to 6.0; the chemical transformation capsula layer comprises the main metal elements in the range of 1mg/m<2> to 30mg/m<2>, phosphorus element and oxygen element respectively in the range of 1mg/m<2> to 100mg/m<2>.

Description

technical field [0001] The present invention relates to a composite material and a manufacturing method thereof. In more detail, it relates to a base material formed of a nickel-phosphorus alloy-plated metal, plastic and ceramic material, and a non-colored high-corrosion-resistant chemical conversion coating, without Composite material which is colored and has high corrosion resistance and high discoloration resistance and method for its manufacture. Background technique [0002] Chromate treatment is known as a chemical conversion treatment for the purpose of preventing corrosion and discoloration of nickel-phosphorus plating coatings, particularly electroless nickel-phosphorus alloy plating coatings, applied to the surface of metal materials and the like. Hexavalent chromium is contained in this chromate treatment bath and the film formed by it. Hexavalent chromium is harmful to the human body, and its use has been restricted or prohibited. Therefore, it is desired to de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/48C23C22/06C23C22/34C23C22/48C23C28/00
CPCC23C22/47C23C2222/10C23C22/361
Inventor 宫崎雅矢森和彦斋木幸则小岛隆司
Owner NIHON PARKERIZING
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