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Coating laminate and manufacturing method thereof

A manufacturing method and a technology for a laminated body, which are applied in chemical instruments and methods, layered products, metal layered products, etc., can solve the problems of increased maintenance frequency of instruments and shortened life of instruments, and achieve corrosion resistance and wear resistance. excellent effect

Active Publication Date: 2022-06-28
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Among the metal parts used in such devices, there is concern that the surface of the metal parts will easily deteriorate due to complex factors such as corrosion and wear, which will lead to an increase in the maintenance frequency of the device and a shortening of the life of the device.

Method used

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  • Coating laminate and manufacturing method thereof
  • Coating laminate and manufacturing method thereof
  • Coating laminate and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] (Production of Example 1)

[0080] As the base material on which the multilayer coating film was formed, a steel SS400 material (50 mm×70 mm×3 mm) whose surface was finished to have an arithmetic mean roughness Ra=0.05 μm by mechanical polishing was used.

[0081] For the formation of the sulfur-containing nickel alloy film, the electroplating solutions shown in Table 1 based on a Watt bath were used. As the target components of the nickel alloy, phosphorus and phosphonic acid were used. Saccharin is used as the sulfur-containing organic compound.

[0082] [Table 1]

[0083] Nickel sulfate 260g / l Nickel chloride 12g / l Boric acid 30g / l Phosphonic acid 25g / l citric acid Moderate saccharin Moderate

[0084] The manufacturing process of the film laminate is along the figure 2 conduct. Specifically, first, as a pretreatment of the base material, a step of removing impurities by degreasing and pickling was performed. In th...

Embodiment 2

[0087] (Production of Example 2)

[0088] In the nickel alloy plating treatment step, except that the thickness of the nickel alloy coating per layer of the multilayer coating was 300 nm and the number of layers was changed to 34 layers, a Film laminate. The overall thickness of the multilayer film was 10.2 μm, which was substantially the same as that of Example 1.

[0089] [Experiment 3]

Embodiment 3

[0090] (Production of Example 3)

[0091] In the nickel alloy plating treatment step, except that the thickness of the nickel alloy coating per layer of the multilayer coating was 1000 nm, and the number of layers was changed to 10 layers, the same procedure as in Experiment 1 was carried out to produce Example 3. Film laminate. The thickness of the entire multilayer film was 10 μm as in Example 1.

[0092] [Experiment 4]

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Abstract

An object of the present invention is to provide a film laminate in which a film that does not contain hexavalent chromium, which is an environmentally problematic substance, and has excellent corrosion resistance and wear resistance is laminated on a base material, and a method for producing the same. The film laminate according to the present invention is a laminate formed by laminating a multilayer film on a base material, and is characterized in that the above-mentioned multilayer film has a plurality of S-containing Ni alloy film layers and the plurality of S-containing Ni alloy film layers. A sulfur-rich layer having a higher S concentration than the S concentration of the S-containing Ni alloy film is formed between the layers of the S-containing Ni alloy film, and the Ni concentration of each of the plurality of S-containing Ni alloy films is 90% by mass. % or more, and the difference in the above-mentioned Ni concentration of each film is within 1 mass %.

Description

technical field [0001] The present invention relates to a film laminate in which a multilayer film is laminated on a substrate, and a method for producing the same. Background technique [0002] In recent years, among various instruments, the tendency to be used in a harsher environment than before is increasing. For example, piping and pumps used in offshore wind power generation facilities and seawater desalination apparatuses, automobiles, construction equipment, etc. in areas where salt damage such as a large amount of snow-melting agents is dispersed are prominent. [0003] In the metal parts used in such devices, there is a concern that the surface of the metal parts is likely to deteriorate due to composite factors such as corrosion and wear, which may lead to an increase in the maintenance frequency of the device and a shortening of the device life. [0004] Currently, for metal parts that are prone to deterioration due to the above-mentioned composite factors, surf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D5/14B32B15/04C25D5/50
CPCB32B15/04C25D5/14C25D5/50B32B15/01C25D3/562C25D5/617C25D5/611Y10T428/12076Y10T428/12049Y10T428/12069Y10T428/12083Y10T428/12118
Inventor 川村利则兼元大
Owner HITACHI LTD