Electroplated Ni stacking membrane and its preparation method

A technology of laminated film and nickel film, which is applied in the field of electroplating Ni laminated film and its preparation, can solve problems such as crack propagation, microcracks, and increased brittleness tendency, and achieves low cost, excellent wear resistance, and simple and easy preparation method line effect

Inactive Publication Date: 2013-11-27
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its disadvantage is that the ultrasonic mechanism is to refine the grains, which will greatly increase the hardness of the nickel coating. When the hard film is too thick, the tendency of brittleness will increase, and microcracks and crack propagation will easily occur.

Method used

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  • Electroplated Ni stacking membrane and its preparation method
  • Electroplated Ni stacking membrane and its preparation method
  • Electroplated Ni stacking membrane and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] After the surface is degreased, it is ultrasonically cleaned in an organic trichlorethylene solution for 5 minutes and then acid-etched and washed with water. The cleaned 304 stainless steel base material is connected to the cathode of the electroplating power supply, and the anode is made of pure nickel plate (nickel content 99.9wt) %), start the ultrasonic generator CSF-1A, adjust its current to 100mA, then hang the plated parts into the electroplating solution placed in the ultrasonic cleaning tank to start electroplating, the electroplating solution formula and process parameters are basically the same as those shown in Table 1. The nickel solution is the same, and the current density applied to the workpiece is 3A / dm 2 , when the coating reaches 120 seconds, the current of the ultrasonic generator is gradually (uniformly) reduced to 0 within 10 seconds, and then the coating is performed without ultrasound for 40 seconds, and then within 10 seconds, the current of th...

Embodiment 2

[0048] The difference from Example 1 is:

[0049] After the surface is degreased, it is ultrasonically cleaned in an organic solution of trichlorethylene for 8 minutes and then acid-etched and washed with water. The cleaned No. 45 steel base material is connected to the cathode of the electroplating power supply, and the anode is made of pure nickel plate (nickel content 99.9%) wt%), start the ultrasonic generator CSF-1A, adjust its current to 150mA, then hang the plated parts into the electroplating solution placed in the ultrasonic cleaning tank to start electroplating, the electroplating solution formula and process parameters are basically the same as those shown in table 1 The nickel plating solution is the same, and the current density applied to the workpiece is 2A / dm 2 , when the coating reaches 120 seconds, the current of the ultrasonic generator is gradually (uniformly) reduced to 0 within 60 seconds, and then the coating is performed without ultrasound for 120 secon...

Embodiment 3

[0052] The difference from Example 1 is:

[0053] After the surface is degreased, it is ultrasonically cleaned in an organic solution of trichlorethylene for 10 minutes and then acid-etched and washed with water. The cleaned aluminum alloy base material is connected to the cathode of the electroplating power supply, and the anode adopts a pure nickel plate (nickel content 99.9wt) %), start the ultrasonic generator CSF-1A, adjust its current to 200mA, then hang the plated parts into the electroplating solution placed in the ultrasonic cleaning tank to start electroplating, the electroplating solution formula and process parameters are basically the same as those shown in Table 1. The nickel solution is the same, and the current density applied to the workpiece is 12A / dm 2 , when the coating reaches 300 seconds, the current of the sonotrode is gradually (uniformly) reduced to 0 within 60 seconds, and then the film is coated for 300 seconds without adding ultrasound, and then wit...

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Abstract

The invention relates to a preparation technology of a stacking membrane, and concretely relates to an electroplated Ni stacking membrane having excellent wear resistance and corrosion resisting performance, high combination strength with substrate which is capable of inhibiting the generation and expansion of crack, and the electroplated Ni stacking membrane and its preparation method solve the problems that fine tunnels capable of passing through the bottom metal are existed on the surface of a routine plated film and the micro-crack is easily generated on the surface of a routine ultrasonic plated film. The electroplated Ni stacking membrane is a Ni plated film produced by intermittently introducing the supersonic wave signals and deposing on the metal substrate material in the process of electroplating, the obtained metallic nickel is in a layered structure. The method comprises the following steps: deoiling, purifying the metal substrate material, electroplating the electroplated Ni stacking membrane, taking out the nickel stacking plated film when the needed thickness is reached, cleaning and drying to obtain the prepared electroplated Ni stacking membrane, wherein the single layer thickness is 0.1-10 micrometers and the total thickness is 4-50 micrometers which can be adjusted according to a practical need.

Description

Technical field: [0001] The invention relates to a preparation technology of a laminated film, in particular to an electroplated Ni laminated film which not only has excellent wear resistance and corrosion resistance, but also has high bonding strength with a base material and can inhibit the generation and expansion of cracks and a preparation method thereof. Background technique: [0002] The development of electroplating technology has a history of 170 years. With its excellent performance, electroless plating has won more and more people's trust, and its application range also covers various fields of industrial production. It has only been more than ten years to industrial application, but the development speed is astonishing, and its potential development space is also huge. With the development of our country's industry and the soundness of various industrial foundations, people have become more interested in electroless nickel plating. A more comprehensive understand...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D5/20C25D3/12
Inventor 于志明牛云松赵健胡家秀
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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