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A kind of chemical plating ni-p/ni-mo-p composite structure coating and preparation method thereof

A composite structure, ni-mo-p technology, applied in the field of chemical plating Ni-P/Ni-Mo-P composite structure coating and its preparation, can solve the problems of poor heat exchange performance, pipeline blockage, reduced energy utilization efficiency and the like , to achieve the effect of improving anti-corrosion, improving physics, and improving anti-scaling performance

Active Publication Date: 2018-05-04
DALIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the particularity of sewage water quality, the generated scale is easy to adhere to the sewage source heat pump pipeline, resulting in pipeline blockage, poor heat transfer performance, and reduced energy utilization efficiency

Method used

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  • A kind of chemical plating ni-p/ni-mo-p composite structure coating and preparation method thereof
  • A kind of chemical plating ni-p/ni-mo-p composite structure coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Degreasing and derusting the surface of the metal substrate;

[0026] (2) Polishing the metal substrate after step (1) treatment: the metal substrate is placed in a mixed solution consisting of 50wt% phosphoric acid, 10wt% acetic acid and 40wt% sulfuric acid, placed at a temperature of 60- At 70°C, the soaking time is 2 minutes;

[0027] (3) Plating once: Plating solution A comprises the following components: nickel sulfate 20g / L; sodium hypophosphite 20g / L; citric acid 4g / L; sodium acetate 16g / L; Put the base material in an ultrasonic water bath, then add plating solution A to it, the ultrasonic frequency is 800-1000Hz, and apply plating for 1h;

[0028] (4) Secondary plating: Plating solution B includes the following components: nickel sulfate 30g / L; sodium hypophosphite 10g / L; sodium molybdate 3g / L; citric acid 4g / L; sodium acetate 16g / L; Agent FC-134: 0.1g / L; cerium sulfate 0.5g / L; put the metal substrate treated in step (3) into an ultrasonic water bath, and ...

Embodiment 2

[0033] (1) Degreasing and derusting the surface of the metal substrate;

[0034] (2) Polishing the metal substrate after step (1) treatment: the metal substrate is placed in a mixed solution consisting of 50wt% phosphoric acid, 10wt% acetic acid and 40wt% sulfuric acid, placed at a temperature of 60- At 70°C, the soaking time is 2 minutes;

[0035] (3) Plating once: Plating solution A comprises the following components: nickel sulfate 30g / L; sodium hypophosphite 10g / L; citric acid 6g / L; sodium acetate 14g / L; Put the base material in an ultrasonic water bath, then add plating solution A to it, the ultrasonic frequency is 800-1000Hz, and apply plating for 1h;

[0036] (4) Secondary plating: Plating solution B includes the following components: nickel sulfate 20g / L; sodium hypophosphite 20g / L; sodium molybdate 0.1g / L; citric acid 6g / L; sodium acetate 14g / L; Active agent FC-134: 1g / L; cerium sulfate 0.1g / L; put the metal substrate treated in step (3) into an ultrasonic water bat...

Embodiment 3

[0041] (1) Degreasing and derusting the surface of the metal substrate;

[0042] (2) Polishing the metal substrate after step (1) treatment: the metal substrate is placed in a mixed solution consisting of 50wt% phosphoric acid, 10wt% acetic acid and 40wt% sulfuric acid, placed at a temperature of 60- At 70°C, the soaking time is 2 minutes;

[0043] (3) Plating once: Plating solution A comprises the following components: nickel sulfate 25g / L; sodium hypophosphite 15g / L; citric acid 5g / L; sodium acetate 15g / L; Put the base material in an ultrasonic water bath, then add plating solution A to it, the ultrasonic frequency is 800-1000Hz, and apply plating for 1h;

[0044](4) Secondary plating: Plating solution B includes the following components: nickel sulfate 25g / L; sodium hypophosphite 15g / L; ammonium molybdate 3g / L; citric acid 5g / L; sodium acetate 15g / L; Agent FC-134: 0.6g / L; cerium sulfate 0.3g / L; put the metal substrate treated in step (3) into an ultrasonic water bath, and...

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Abstract

The invention discloses a chemical-plating Ni-P / Ni-Mo-P composite structure coating and a preparation method thereof, belonging to the technical field of functional coatings. The composite structure coating is sequentially composed of a Ni-Mo-P coating and a Ni-P coating from the surface to the metal substrate. The preparation method of the composite structure coating comprises the following steps: carrying out deoiling, derusting and polishing treatment on the metal substrate; chemically plating the Ni-P coating on the surface of the metal substrate as an induction layer; chemically plating the Ni-Mo-P coating on the Ni-P coating; and cleaning, and drying. According to the Ni-P / Ni-Mo-P composite structure coating prepared by the method, the microstructure of the coating is adjusted to improve the physical and chemical properties, thereby obviously enhancing the corrosion resistance and scaling resistance of the pipeline.

Description

technical field [0001] The invention relates to a method for performing anti-corrosion and anti-scaling coating technology on the surface of a pipeline, in particular to an electroless Ni-P / Ni-Mo-P composite structure coating and a preparation method thereof. Background technique [0002] Economic and social development urgently needs new high-efficiency energy-saving technologies. Urban sewage is a kind of urban waste heat-type clean energy. Heat pump cold and heat sources can use urban sewage to heat and cool buildings, which has social benefits of energy conservation and environmental protection. The difficulty in the popularization and application of sewage source heat pump technology is that impurities in sewage easily form scales that cause heat exchange surface pollution and scaling. For the precipitated substances, the fouling mechanism process can be roughly divided into the following steps: first, ions in water react to form salt molecules with lower solubility; se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C18/16C23C18/36C23C18/50
CPCC23C18/1651C23C18/36C23C18/50
Inventor 付传起王宇雍帆
Owner DALIAN UNIV
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