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Ni-P-PFA-SiO2 nano composite coating and preparation method thereof

A technology of ni-p-pfa-sio2 and ni-p-ptfe-sio2, which is applied in the field of Ni-P-PFA-SiO2 nanocomposite coating and its preparation, can solve the problem of poor wear resistance and insufficient hardness of Ni-P coating , high porosity and other problems, to achieve the effect of reducing porosity, improving corrosion resistance and excellent hardness performance

Active Publication Date: 2022-02-08
NORTHEAST DIANLI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the electroless plating on the metal surface is mostly based on Ni-P, but the Ni-P coating has disadvantages such as poor wear resistance, insufficient hardness, and high porosity.

Method used

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  • Ni-P-PFA-SiO2 nano composite coating and preparation method thereof
  • Ni-P-PFA-SiO2 nano composite coating and preparation method thereof
  • Ni-P-PFA-SiO2 nano composite coating and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0045] Polished steel with NaOH 20g / L, Na 2 CO 3 20g / L, Na 3 PO 4 20g / L, Na 2 SiO 3 The 12g / L mixed lye was washed at 70°C for 10 minutes, rinsed with tap water at 75°C, and then washed with deionized water at 80°C. After that, the steel sample was energized at 4V and 3A for 2 minutes. Perform electric alkaline washing in the same alkaline solution, soak in dilute hydrochloric acid solution for 30s after washing with deionized water, and wash with deionized water to obtain pretreated steel;

[0046] Hang the pretreated steel in the Ni-P layer plating solution (nickel sulfate 30g / L, sodium hypophosphite 30g / L, sodium citrate 15g / L, anhydrous sodium acetate 15g / L, glycine 0.5g / L, pH In 4.5), plating was performed at 90°C for 2 hours, rinsed with 80°C deionized water after the end, dried in a vacuum furnace, and cooled to room temperature (under vacuum conditions during the cooling process); then hung on Ni- P-SiO 2 Layer plating solution (nickel sulfate 30g / L, sodium h...

Embodiment 2

[0049] Polished steel with NaOH 30g / L, Na 2 CO 3 30g / L, Na 3 PO 4 40g / L, Na 2 SiO 3 The 5g / L mixed lye was washed at 65°C for 10 minutes, rinsed with tap water at 70°C, and then washed with deionized water at 90°C. After that, the steel sample was energized at 5V and 5A for 4 minutes. Perform electric alkaline washing in the same alkaline solution, soak in dilute hydrochloric acid solution for 30s after washing with deionized water, and wash with deionized water to obtain pretreated steel;

[0050] Hang the pretreated steel in the Ni-P layer plating solution (nickel sulfate 20g / L, sodium hypophosphite 30g / L, sodium citrate 20g / L, anhydrous sodium acetate 20g / L, glycine 0.5g / L, pH 5.0), plating at 90°C for 2h, rinsed with 80°C deionized water after the end, dried in a vacuum furnace, and cooled to room temperature (under vacuum conditions during the cooling process); then hung on Ni- P-SiO 2 Layer plating solution (nickel sulfate 20g / L, sodium hypophosphite 30g / L, sod...

Embodiment 3

[0053] Polished steel with NaOH 25g / L, Na 2 CO 3 30g / L, Na 3 PO 4 30g / L, Na 2 SiO 3 Alkali solution mixed with 5g / L was washed at 60°C for 7 minutes, rinsed with tap water at 70°C, and then washed with deionized water at 80°C, and then the steel sample was energized at 8V and 3A for 2 minutes. Conduct electric alkaline washing in the same alkaline solution, soak in dilute hydrochloric acid solution for 20s after washing with deionized water, and wash with deionized water to obtain pretreated steel;

[0054] Hang the pretreated steel in the Ni-P layer plating solution (nickel sulfate 20g / L, sodium hypophosphite 25g / L, sodium citrate 20g / L, anhydrous sodium acetate 20g / L, glycine 0.5g / L, pH In 4.6), apply plating at 80°C for 1 hour, rinse with 80°C deionized water after completion, dry in a vacuum furnace, and cool to room temperature (under vacuum conditions during cooling); then hang on Ni- P-SiO 2 Layer plating solution (nickel sulfate 20g / L, sodium hypophosphite 25...

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Abstract

The invention discloses a Ni-P-PFA-SiO2 nano composite coating and a preparation method thereof, which belong to the technical field of metal surface engineering. According to the Ni-P-PFA-SiO2 nano composite coating, a Ni-P coating serves as a bottom layer, then the Ni-P-SiO2 coating, the Ni-P-PTE-SiO2 coating and the Ni-P-PFA-SiO2 coating are sequentially plated, surface dirt is removed by conducting alkali washing, electric alkali washing and acid washing on a base material in the preparation process, the binding force of the coatings is improved by adopting a method of conducting layered plating for four times, the porosity of the coatings is effectively reduced, the microstructure of the plating layer is changed, so that the hardness performance of the plating layer is more excellent, the preparation method is environment-friendly, the plating solution can be reused, and the method is scientific, reasonable, high in applicability and good in anti-corrosion effect. By adopting the method, the service life of the steel article can be prolonged, and the cost is saved.

Description

technical field [0001] The present invention relates to a kind of Ni-P-PFA-SiO 2 The nanocomposite coating and its preparation method belong to the technical field of metal surface engineering. Background technique [0002] With the rapid development of advanced manufacturing equipment technology, there is an increasing demand for wear resistance and corrosion resistance of metal parts and electronic devices. Traditional metal materials, such as stainless steel, aluminum products, and copper products, can no longer meet the requirements. The high performance requirements of the product surface, so electroless plating is applied in the processing of various chemical, mechanical, electronic products and other parts. [0003] As a material with strong corrosion resistance, stainless steel is used in various industrial fields, and it is also a metal material that can be seen in daily life, but its high price limits its application range. In order to find other metal materials ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/36C23C18/50C23C18/18
CPCC23C18/1651C23C18/1662C23C18/36C23C18/50C23C18/1844C23C18/1689C23C18/1692
Inventor 赵波高涵曹生现邹明衡吕昌旗王恭孙天一范思远沙浩
Owner NORTHEAST DIANLI UNIVERSITY
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