Light-absorbing member and method for producing the same

A manufacturing method and light absorption technology, applied in the field of metal materials, can solve the problems of black particles such as wear, fall off, and existence, and achieve the effect of high utilization value and excellent adhesion of coating film

Inactive Publication Date: 2010-09-22
NIHON PARKERIZING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods still have problems such as the use of expensive silver, the use of harmful water-soluble antimony compounds, the smell of ammonia in the chemical, and the problems in the working environment. Moreover, the adhesion of the film cannot be said to be sufficient, and there are also precipitated black particles. Particles wear, fall off and stain clothes, etc.

Method used

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  • Light-absorbing member and method for producing the same
  • Light-absorbing member and method for producing the same
  • Light-absorbing member and method for producing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0039] The present invention will be described below using examples and comparative examples. The present invention is not limited to the scope shown in the following examples.

[0040] Test plate: As the test plate, the following two types were used: a pure aluminum plate (thickness 1mm, 50×100mm) was degreased with an alkaline degreasing agent (FC-315 manufactured by Parkerizing Co., Ltd. in Japan), washed with water, and dried. and a zinc-coated aluminum plate obtained by dissolving the above-mentioned pure aluminum plate in a zinc-substituted plating bath prepared by dissolving zinc oxide in a sodium hydroxide solution for 30 seconds so that the surface is covered with metallic zinc.

[0041] Treatment: (Examples 1-5, Examples 9-11, Comparative Examples 1-3)

[0042] Prepare a treatment solution (using pure water as a solvent) with the composition shown in Table 1, raise the temperature of the prepared blackening treatment solution to 50° C., and immerse the test panel fo...

Embodiment 6

[0044] A treated plate was prepared with a bath composition in which Al was removed from the treated liquid composition in Example 5, and a solution of 10 g / L of zinc oxalate was applied to the treated plate so that the dry film thickness was 0.2 μm, and dried at 300° C. , make test board.

Embodiment 7

[0046] A treated plate was prepared under the same conditions as in Example 6, and a solution of 10 g / L of alumina sol was applied to the treated plate so that the dry film thickness was 0.5 μm, and dried at 150° C. to prepare a test plate.

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Abstract

Disclosed is a light-absorbing member wherein a black lower layer containing nickel and / or cobalt and an upper layer containing an oxide of at least one element selected from aluminum, magnesium and zinc are formed on a surface containing zinc and / or aluminum. Also disclosed is a method for producing such a light-absorbing member. In this light-absorbing member, a coating film exhibiting high light absorption and excellent wear resistance is formed on a metal material surface which is composed of zinc or an aluminum alloy.

Description

technical field [0001] The invention relates to the surface treatment technology of metal materials, especially galvanized / aluminum materials, galvanized aluminum, zinc / aluminum die castings, sheets, foils and other materials with zinc / aluminum surfaces. More specifically, it relates to light-absorbing components for blackening treatment, light absorption, and anti-reflection purposes used in home appliances and kitchen utensils, optical equipment parts, transportation equipment parts, electronic equipment parts, building materials, etc., and their manufacture method. Background technique [0002] Aluminum and zinc die-castings obtained by replacing galvanizing, steel, aluminum sheets, aluminum radiators, foils, aluminum vapor-deposited films, etc. obtained by electro / hot-dip galvanizing appear white, off-white, silver-white, etc. Therefore, in order to obtain Blackening treatment is often required for high-end, high-quality, anti-reflection of light, and anti-glare. It tu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C28/00C23C18/32
CPCC23C28/3225C23C28/347C23C28/345C23C28/322C23C28/36C23C18/54C23C18/32
Inventor 森和彦冈野泰裕林洋树
Owner NIHON PARKERIZING
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