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A method for chemically plating nickel-boron-lead high-hardness wear-resistant coating on the surface of titanium alloy

A technology of wear-resistant coating and surface chemistry, which is applied in the field of preparation of nickel-boron-lead high-hardness wear-resistant coating on the surface of titanium alloy, can solve the problem of the preparation of nickel-boron-lead high-hardness wear-resistant coating that has been reported but has not been found. Methods and other issues, to achieve the effect of improving the bonding strength, no pitting bonding force, and good mechanical properties

Active Publication Date: 2020-09-29
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Although there have been preliminary studies on electroless nickel-boron-lead coatings, so far, no reports have been found on the preparation of nickel-boron-lead high-hardness and wear-resistant coatings on titanium alloys by electroless plating.

Method used

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  • A method for chemically plating nickel-boron-lead high-hardness wear-resistant coating on the surface of titanium alloy
  • A method for chemically plating nickel-boron-lead high-hardness wear-resistant coating on the surface of titanium alloy
  • A method for chemically plating nickel-boron-lead high-hardness wear-resistant coating on the surface of titanium alloy

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Embodiment 1

[0037] A method for chemically plating nickel-boron-lead high-hardness wear-resistant coating on the surface of titanium alloy, comprising the following steps:

[0038] Step 1. Mechanical grinding and polishing: Use 320, 800, 1000, 1500, 2000, 3000# silicon carbide sandpaper to mechanically grind and polish the titanium alloy sample in order to remove the oxide film produced during the processing of the titanium alloy sample and ensure that the sample has The same surface roughness; after polishing, it is ultrasonically cleaned for 3 minutes, and the cleaned titanium alloy sample is preserved in alcohol for use; the titanium alloy sample is TC4 titanium alloy, and the sample size is 15mm×10mm×3mm;

[0039] Step 2. Organic degreasing: Soak the mechanically polished titanium alloy sample in acetone solution, ultrasonically clean it for 8 minutes, and then rinse it with 65°C deionized water;

[0040] Step 3, chemical alkali washing and degreasing: soak the titanium alloy sample a...

Embodiment 2

[0050] A method for chemically plating nickel-boron-lead high-hardness wear-resistant coating on the surface of titanium alloy, comprising the following steps:

[0051] Step 1. Mechanical grinding and polishing: Use 320, 800, 1000, 1500, 2000, 3000# silicon carbide sandpaper to mechanically grind and polish the titanium alloy sample in order to remove the oxide film produced during the processing of the titanium alloy sample and ensure that the sample has The same surface roughness; after polishing, it is ultrasonically cleaned for 3 minutes, and the cleaned titanium alloy sample is preserved in alcohol for use; the titanium alloy sample is TC4 titanium alloy, and the sample size is 15mm×10mm×3mm;

[0052] Step 2. Organic degreasing: Soak the mechanically polished titanium alloy sample in acetone solution, ultrasonically clean it for 8 minutes, and then rinse it with 65°C deionized water;

[0053] Step 3, chemical alkali cleaning and degreasing: soak the titanium alloy sample ...

Embodiment 3

[0061] A method for chemically plating nickel-boron-lead high-hardness wear-resistant coating on the surface of titanium alloy, comprising the following steps:

[0062] Step 1. Mechanical grinding and polishing: Use 320, 800, 1000, 1500, 2000, 3000# silicon carbide sandpaper to mechanically grind and polish the titanium alloy sample in order to remove the oxide film produced during the processing of the titanium alloy sample and ensure that the sample has The same surface roughness; after polishing, it is ultrasonically cleaned for 3 minutes, and the cleaned titanium alloy sample is preserved in alcohol for use; the titanium alloy sample is TC4 titanium alloy, and the sample size is 15mm×10mm×3mm;

[0063] Step 2. Organic degreasing: Soak the mechanically polished titanium alloy sample in acetone solution, ultrasonically clean it for 8 minutes, and then rinse it with 65°C deionized water;

[0064] Step 3, chemical alkali washing and degreasing: soak the titanium alloy sample a...

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Abstract

The invention discloses a method of chemically plating a nickel, boron and lead high hardness wear-resistant coating to the surface of a titanium alloy. The method primarily comprises the following steps: S1, mechanical grinding and polishing; S2, organic deoiling; S3, chemical alkali wash deoiling; S4, pickling to activate; S5, chemical plating; and S6, thermal treatment. An oxidation film naturally generated on the surface of the titanium alloy can be removed effectively by means of a pre-treatment flow of the titanium alloy, so that the quality of the chemically plated nickel, boron and lead high hardness wear-resistant coating on the titanium alloy can be guaranteed. The nickel, boron and lead high hardness wear-resistant coating prepared on the titanium alloy can increase 3-5 times ofsurface hardness and reduce 90-98% of wear rate of a titanium alloy material, and is low in porosity. The corrosion resistance of a titanium alloy sample can be improved effectively as a result of the low porosity of the chemically plated coating. The coating is bright and smooth in surface, uniform and compact in thickness, good in mechanical property, free of hard spots, high in binding force and high in application value, and has important actual meaning in application of the titanium alloy.

Description

technical field [0001] The invention belongs to the technical field of metal surface treatment, and relates to a method for preparing a nickel-boron-lead high-hard wear-resistant coating chemically plated on the surface of a titanium alloy. Background technique [0002] Titanium alloy materials have good mechanical properties and mechanical properties, such as low density, high strength, non-magnetic properties, good high temperature corrosion resistance, small elastic modulus, small thermal expansion coefficient, and good low temperature toughness. It is widely used in aviation, aerospace, shipbuilding, automobile, nuclear power and other fields, and has a good development prospect. However, the characteristics of titanium alloys such as large friction coefficient, easy adhesion, poor wear resistance, severe oxidation under high temperature conditions, and difficulty in lubrication greatly limit the usability and application range of titanium alloys. In particular, the use...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C18/48C23C18/18C22F1/18C22F1/02
Inventor 余家欣贾尧侯玉欣齐慧敏张亚锋何洪途蔡荣苟晓璇
Owner SOUTHWEAT UNIV OF SCI & TECH