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Nanocomposite nickel-plated coating material and preparation method and application thereof

A nano-composite and nickel-plating technology, which is applied to surface coating materials and fields, can solve the problems of high film preparation cost, harsh process conditions and high price, and achieve the effects of low friction coefficient, low preparation cost and low price.

Inactive Publication Date: 2011-01-05
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above-mentioned methods have a common disadvantage, that is, the required equipment is complicated, the process conditions are harsh and the preparation cost of the film is high.
Taking magnetron sputtering as an example, molybdenum targets used in the preparation of nano-rare earth oxides and carbon nanotube films require extremely high purity (>99.99%) molybdenum targets and are very expensive

Method used

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  • Nanocomposite nickel-plated coating material and preparation method and application thereof
  • Nanocomposite nickel-plated coating material and preparation method and application thereof
  • Nanocomposite nickel-plated coating material and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] After the titanium alloy is degreasing, alkaline etching and acid etching, it is plated with nanometer rare earth oxide and carbon on the titanium alloy substrate by secondary zinc dipping and pre-plating electroless nickel. Ni-based composite coating of nanotubes.

[0034] The plating method is as follows:

[0035] (1) Preparation of chemical plating solution

[0036] Its composition is: nickel sulfate 26g / L, sodium hypophosphite 18g / L, sodium acetate 22g / L, sodium citrate 28g / L, lactic acid 19g / L;

[0037] 18g / L nano rare earth oxides and 10g / L carbon nanotubes were prepared by emulsion method; pH value of plating solution was adjusted with acetic acid or ammonia water, pH=4.5

[0038] The nanometer rare earth oxide is nanometer lanthanum oxide; the particle diameter of nanometer lanthanum oxide is about 65 nanometers and the particle diameter of carbon nanotubes is about 65 nanometers;

[0039] (2) Degreasing, activation and pre-plating of plated parts;

[0040] ...

Embodiment 2

[0044] After degreasing and acid etching, the amorphous alloy is coated with a Ni-based composite coating containing nanometer rare earth oxides and carbon nanotubes on a zirconium-based amorphous alloy substrate by a nanochemical composite plating method. The plating method is as follows:

[0045] (1) Prepare a nanochemical composite plating solution, which is composed of: nickel sulfate 24g / L, sodium hypophosphite 26g / L, sodium acetate 22g / L, sodium citrate 34g / L, lactic acid 24g / L, emulsion 16g / L of nano-rare earth oxides and 12g / L of carbon nanotubes prepared by the method; the pH value of the plating solution was adjusted with acetic acid (ammonium sulfate) and sodium acetate (ammonia), pH=8;

[0046] The nanometer rare earth oxide is nanometer cerium oxide; the particle diameter of nanometer cerium oxide is about 75 nanometers, and the particle diameter of carbon nanotubes is about 75 nanometers;

[0047] (2) Degreasing, activation and pre-plating of plated parts;

[0...

Embodiment 3

[0051] After degreasing, alkaline etching and acid etching, the aluminum alloy is plated with nanometer rare earth oxides and carbon nanotubes on the aluminum substrate by secondary zinc dipping and pre-plating electroless nickel. Ni-based composite coating. The nanocomposite electroplating method is as follows:

[0052](1), prepare electroplating solution, its composition is: nickel sulfate 208g / L, nickel chloride 22g / L, sodium hypophosphite 16g / L, sodium sulfate 48g / L;

[0053] 16g / L nano rare earth oxides and 10g / L carbon nanotubes prepared by emulsion method;

[0054] Adjust the pH value of the plating solution with sulfuric acid and ammonia water, pH=2~4;

[0055] The nanometer rare earth oxide is nanometer yttrium oxide; the particle diameter of nanometer yttrium oxide is about 45 nanometers, and the particle diameter of carbon nanotubes is about 45 nanometers;

[0056] (2) Degreasing, activation and pre-plating of plated parts;

[0057] (3) The plating solution is h...

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Abstract

The invention discloses a nanocomposite nickel-plated coating material and a preparation method and application thereof. The nanocomposite nickel-plated coating material comprises the following components in percentage by weight: 0.02 to 0.5 percent of nano-rare earth oxide and 0.02 to 0.3 percent of carbon nanotube. The preparation method comprises the following steps of: removing oil from a plated part; activating; pre-plating; plating and the like. A nanocomposite nickel-plated coating obtained by the method has the advantages of effectively preventing cold welding effect, prolonging the service life of metal parts, reducing energy consumption, saving energy, avoiding environmental pollution and preventing a moving member or a contact pair in a aerospace craft from performing vacuum cold welding on a friction pair, along with very high vacuum cold welding resistance, extremely low friction coefficient and wide application prospects in the fields of aerospace, machinery, chemical industry and the like. The preparation method has the advantages of no need of complex equipment, simple process, wide material source, low price, low preparation cost, no pollution in a production process and suitability for pilot plant test and industrialized production.

Description

technical field [0001] The invention relates to a surface coating material for amorphous alloys, titanium alloys, aluminum alloys and other materials with metal materials, and in particular to a nano-composite nickel-based coating material and a preparation method thereof. technical background [0002] Some studies have shown that in a vacuum environment or low pressure conditions, adhesion between the metal surfaces of two clean mechanical parts in contact with each other is very likely to occur, and because the frictional heat is difficult to dissipate, the temperature rise of the contact interface is very high, and the high temperature (including the environment). Temperature rise) and vacuum and low pressure (and high contact load) environments are all important causes of adhesion and increased friction and wear at the contact interface. And spacecraft, aircraft also have such a similar situation. It can be seen that the lubrication requirements for space mechanical...

Claims

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Application Information

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IPC IPC(8): C23C18/36
Inventor 叶斌
Owner SHANGHAI INST OF TECH
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