Preparation method of laminar composite nanostructured nickel

A nanostructure and layered composite technology, applied in the field of materials science, can solve the problems of inability to flexibly control the microstructure of nanocrystalline metal materials, and achieve the effects of good plasticity, convenient operation and high tensile strength

Active Publication Date: 2017-07-07
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Aiming at the above-mentioned technical problems in the prior art, the present invention provides a method for preparing layered composite nanostructured nickel. The method for preparing the layered composite nanostructured nickel should solve the problem that the prior art cannot flexibly control the nanocrystalline Technical Problems of Microstructure of Metallic Materials

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  • Preparation method of laminar composite nanostructured nickel
  • Preparation method of laminar composite nanostructured nickel
  • Preparation method of laminar composite nanostructured nickel

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Effect test

Embodiment 1

[0038] In this embodiment, a layered composite nanostructure nickel plating layer is prepared, and the specific preparation steps are as follows:

[0039] (1) Choose ordinary carbon steel as the base metal and pretreat it: the surface of the carbon steel is polished with 280#, 800# and 1500# sandpaper in turn, and then rinsed with deionized water to remove residual matrix wear and peelings on the steel surface And sandpaper abrasive grains, then 0.5# diamond abrasive paste is polished, and then immersed in a 20% mass percentage sodium hydroxide aqueous solution at a temperature of 70-80℃ for 10-15min to degreasing and degreasing, and then washed with tap water in turn Rinse and clean with distilled water to obtain a smooth and non-polluting surface; then, use a 10% hydrochloric acid aqueous solution to activate the surface for 30-60s, and then use tap water and distilled water to rinse the surface with acid solution. The steel workpiece treated above is soaked in distilled water ...

Embodiment 2

[0045] In this embodiment, a layered composite nanostructure nickel plating layer is prepared, and the specific preparation steps are as follows:

[0046] (1) Select ordinary carbon steel as the base metal and pre-treat it: Use 280#, 800# and 1500# sandpaper to polish the surface of the carbon steel in turn, and then rinse with deionized water to remove residual matrix wear and peelings on the steel surface And sandpaper abrasive grains, then 0.5# diamond abrasive paste is polished, and then immersed in a 20% mass percentage sodium hydroxide aqueous solution at a temperature of 70-80℃ for 10-15min to degreasing and degreasing, and then washed with tap water in turn Rinse and clean with distilled water to obtain a smooth and non-polluting surface; then, use a 10% hydrochloric acid aqueous solution to activate the surface for 30-60s, and then use tap water and distilled water to rinse the surface with acid solution. The steel workpiece treated above is soaked in distilled water for...

Embodiment 3

[0052] In this embodiment, a layered composite nanostructure nickel plating layer is prepared, and the specific preparation steps are as follows:

[0053] (1) Choose ordinary carbon steel as the base metal and pretreat it: the surface of the carbon steel is polished with 280#, 800# and 1500# sandpaper in turn, and then rinsed with deionized water to remove residual matrix wear and peelings on the steel surface And sandpaper abrasive grains, then 0.5# diamond abrasive paste is polished, and then immersed in a 20% mass percentage sodium hydroxide aqueous solution at a temperature of 70-80℃ for 10-15min to degreasing and degreasing, and then washed with tap water in turn Rinse and clean with distilled water to obtain a smooth and non-polluting surface; then, use a 10% hydrochloric acid aqueous solution to activate the surface for 30-60s, and then use tap water and distilled water to rinse the surface with acid solution. The steel workpiece treated above is soaked in distilled water ...

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Abstract

The invention discloses a preparation method of laminar composite nanostructured nickel. A pretreated ordinary carton steel workpiece and a pure nickel plate are put in electrolyte consisting of 200-300 g of nickel sulfate, 30-40 g of nickel chloride, 30-40 g of boric acid, 2-8 g of sodium citrate, 2 g of composite additive and the balance of distilled water; the ordinary carbon steel workpiece, serving as a cathode, and the pure nickel plate, serving as an anode, are respectively connected with a negative pole and a positive pole of a direct-current voltage stabilization and current stabilization power supply; and circular alternating electrodeposition is performed by adopting two different current densities and the laminar composite nanostructured nickel alternately combined by two different grain layers is obtained. The preparation method realizes flexible control over the grain size and the layer thickness ratio of each single layer of the laminar composite nanostructured nickel plating layer through controlling two current densities and the deposition times under the two current densities. The prepared laminar composite nanostructured nickel is excellent in mechanical characteristic, can be used for a reinforced coating layer of a metal material, or serves as a high-performance structural material.

Description

[0001] Technical field: [0002] The invention belongs to the field of materials science, and relates to a method for preparing nanocrystalline metal materials, in particular to a method for preparing layered composite nanostructured nickel capable of flexibly regulating the size and distribution of crystal grains. [0003] Background technique: [0004] The improvement of the mechanical performance indicators of metal materials will have significant effects in driving technological progress, saving energy, reducing energy consumption and reducing pollution. Nanocrystalline metal materials, due to their small internal grains, many grain boundaries, and high defect density, exhibit many physical and mechanical properties that are different from traditional metal materials, such as ultra-high strength, good wear resistance, etc., in new structural materials, The application prospects in engineering fields such as high-performance coatings and micro / nano electromechanical systems are br...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/16C25D5/36C25D5/14
CPCC25D3/16C25D5/14C25D5/36
Inventor 沈喜训吴勐徐群杰成旦红谢景龙
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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