Grounding grid NiP-DLC composite corrosion resisting protection coating and preparing method

A technology of protective coating and grounding grid, which is applied in the direction of coating, metal material coating process, connection, etc., can solve the problem that few people pay attention to the research and development of protective coating, and achieve better corrosion resistance and oxidation resistance. High binding force and uniform distribution effect

Inactive Publication Date: 2014-07-30
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In recent years, there have been a large number of researches on the corrosion behavior and diagnosis of grounding grids in China, but little attention has been paid to the development and testing of new protective coatings.

Method used

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  • Grounding grid NiP-DLC composite corrosion resisting protection coating and preparing method
  • Grounding grid NiP-DLC composite corrosion resisting protection coating and preparing method
  • Grounding grid NiP-DLC composite corrosion resisting protection coating and preparing method

Examples

Experimental program
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Effect test

Embodiment 1

[0052] The Q235 steel was processed into a 10*10mm square sample, which was ground step by step with diamond sandpaper, and then the surface of the Q235 steel was mechanically polished. The polished sample was ultrasonically cleaned in alcohol and then dried to obtain a Q235 steel sample.

[0053] Put the Q235 steel sample into the plating solution to deposit a NiP alloy coating on the surface of the Q235 steel sample. The plating solution is a plating solution with a pH of 4.7 prepared by nickel sulfate, sodium hypophosphide, caustic soda and lactic acid, wherein the concentration of nickel sulfate The concentration of sodium hypophosphite is 30g / L, the concentration of sodium hypophosphite is 30g / L, the concentration of lactic acid is 25g / L, and the concentration of caustic soda is 5g / L.

[0054] Put the Q235 steel sample deposited with NiP alloy coating into the anode layer ion source deposition equipment for glow cleaning, see figure 1 , The Q235 steel sample is placed on ...

Embodiment 2

[0056] The Q235 steel was processed into a 10*10mm square sample, which was ground step by step with diamond sandpaper, and then the surface of the Q235 steel was mechanically polished. The polished sample was ultrasonically cleaned in alcohol and then dried to obtain a Q235 steel sample.

[0057] Put the Q235 steel sample into the plating solution to deposit a NiP alloy coating on the surface of the Q235 steel sample. The plating solution is a plating solution with a pH of 5 prepared by nickel sulfate, sodium hypophosphide, caustic soda and lactic acid, wherein the concentration of nickel sulfate The concentration of sodium hypophosphite is 30g / L, the concentration of sodium hypophosphite is 30g / L, the concentration of lactic acid is 25g / L, the concentration of caustic soda is 5g / L, the temperature of the plating solution is maintained at 95°C, and the thickness of the deposited NiP alloy coating is 27μm.

[0058] Put the Q235 steel sample deposited with NiP alloy coating into...

Embodiment 3

[0060] The Q235 steel was processed into a 10*10mm square sample, which was ground step by step with diamond sandpaper, and then the surface of the Q235 steel was mechanically polished. The polished sample was ultrasonically cleaned in alcohol and then dried to obtain a Q235 steel sample.

[0061] Put the Q235 steel sample into the plating solution to deposit a NiP alloy coating on the surface of the Q235 steel sample. The plating solution is a plating solution with a pH of 5 prepared by nickel sulfate, sodium hypophosphide, caustic soda and lactic acid, wherein the concentration of nickel sulfate The concentration of sodium hypophosphite is 30g / L, the concentration of sodium hypophosphite is 30g / L, the concentration of lactic acid is 25g / L, the concentration of caustic soda is 5g / L, the temperature of the plating solution is maintained at 100°C, and the thickness of the deposited NiP alloy coating is 28μm.

[0062] Put the Q235 steel sample deposited with NiP alloy coating int...

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Abstract

The invention discloses a grounding grid NiP-DLC composite corrosion resisting protection coating and preparing method. The coating comprises an NiP alloy coating covering the grounding grid material and a pure carbon type diamond coating covering the NiP alloy coating, wherein the NiP alloy coating is a corrosion resisting coating, and the pure carbon type diamond coating is a high hardness oxidation resistant coating. The coating preparing method comprises the steps that the NiP alloy coating is deposited on the surface of the grounding grid material in a chemical plating mode, and the pure carbon type diamond coating is deposited on the surface of the NiP alloy coating through an anode layer ion source in a vacuum cavity. The coating is more superior in abrasion resistance, corrosion resistance and oxidation resistance, and friendly to the environment. The method is simple in technology and high in deposition efficiency, and the coating is suitable for being produced on a large scale. The thick composite coating can be obtained based on the method, the service life of the coating can be greatly prolonged, and cost can be reduced.

Description

[0001] technical field [0002] The invention belongs to the technical field of thin film materials, and in particular relates to a ground grid NiP-DLC composite anti-corrosion protective coating and a preparation method thereof. Background technique [0003] Power grounding is the need for power system work, lightning protection and safety. It is an important safety barrier for the safe operation of power generation, power transformation and power transmission systems, and an indispensable part to ensure the safe operation of power systems. The grounding grid laid underground will inevitably be eroded and corroded by the surrounding soil environment, resulting in loss and damage. Over the years, once the grounding resistance of the grounding grid is higher than the safe range due to corrosion, it is easy to cause accidents even if it has not yet broken. Even endanger personal safety. [0004] With the continuous expansion of substation capacity, the requirements for the sa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01R4/66H01R43/00C23C28/00C23C18/32C23C14/06
Inventor 万强杨兵罗畅刘辉东
Owner WUHAN UNIV
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