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Nickel-aluminum bronze surface laser cladding amorphous composite coating and preparation method thereof

A composite coating and nickel-aluminum-bronze technology, which is applied in coating, metal material coating technology, etc., to achieve good application prospects, high work efficiency, and easy automation

Inactive Publication Date: 2019-11-01
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention combines the advantages of laser cladding technology and amorphous alloys to clad an amorphous composite coating with a certain thickness on the surface of nickel-aluminum bronze to improve the wear resistance and corrosion resistance of nickel-aluminum bronze. to report

Method used

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  • Nickel-aluminum bronze surface laser cladding amorphous composite coating and preparation method thereof
  • Nickel-aluminum bronze surface laser cladding amorphous composite coating and preparation method thereof
  • Nickel-aluminum bronze surface laser cladding amorphous composite coating and preparation method thereof

Examples

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Embodiment 1

[0041] This example relates to a nickel-aluminum bronze surface cladding amorphous composite coating and a preparation method thereof, the method comprising the following steps:

[0042] (1) Polish the surface of the nickel-aluminum bronze to remove the oxide film and oil stains, ultrasonically clean it with acetone solution for 10 minutes, and then dry it with cold air.

[0043] (2) Dry the prepared nickel-aluminum bronze in a drying oven at 100°C for 30 minutes; place the amorphous atomized powder in a drying oven at 100°C and dry for 60 minutes; The thick shape is evenly placed on the nickel-aluminum bronze surface and air-dried naturally, with a thickness of 1mm.

[0044](3) Use a high-energy laser beam to perform laser cladding on the substrate surface of the preset amorphous atomized powder to prepare a copper-based amorphous / crystalline composite coating. The process parameters are: the laser beam is perpendicular to the workpiece scanning, and at the same time blowing ...

Embodiment 2

[0050] This example relates to a nickel-aluminum bronze surface cladding amorphous composite coating and a preparation method thereof, the method comprising the following steps:

[0051] (1) Polish the surface of the nickel-aluminum bronze to remove the oxide film and oil stains, ultrasonically clean it with acetone solution for 10 minutes, and then dry it with cold air.

[0052] (2) Dry the prepared nickel-aluminum bronze in a drying oven at 100°C for 30 minutes; place the amorphous atomized powder in a drying oven at 100°C and dry for 60 minutes; The thick shape is evenly placed on the nickel-aluminum bronze surface and air-dried naturally, with a thickness of 1mm.

[0053] (3) Use a high-energy laser beam to perform laser cladding on the substrate surface of the preset amorphous atomized powder to prepare a copper-based amorphous / crystalline composite coating. The process parameters are: the laser beam is perpendicular to the workpiece scanning, and at the same time blowing...

Embodiment 3

[0057] This example relates to a nickel-aluminum bronze surface cladding amorphous composite coating and a preparation method thereof, the method comprising the following steps:

[0058] (1) Polish the surface of the nickel-aluminum bronze to remove the oxide film and oil stains, ultrasonically clean it with acetone solution for 10 minutes, and then dry it with cold air.

[0059] (2) Dry the prepared nickel-aluminum bronze in a drying oven at 100°C for 30 minutes; place the amorphous atomized powder in a drying oven at 100°C and dry for 60 minutes; The thick shape is evenly placed on the nickel-aluminum bronze surface and air-dried naturally, with a thickness of 1mm.

[0060] (3) Use a high-energy laser beam to perform laser cladding on the substrate surface of the preset amorphous atomized powder to prepare a copper-based amorphous / crystalline composite coating. The process parameters are: the laser beam is perpendicular to the workpiece scanning, and at the same time blowing...

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Abstract

The invention provides a nickel-aluminum bronze surface laser cladding amorphous composite coating and a preparation method thereof. The preparation method comprises the following steps that atomizedCu45Zr47Al8 alloy powder and ethyl alcohol are mixed, then, the surface of nickel-aluminum bronze is evenly coated with mixer, high-energy laser beams are used for carrying out laser cladding on the surface of the nickel-aluminum bronze, and then the nickel-aluminum bronze surface laser cladding amorphous composite coating is acquired. The obtained amorphous composite coating is uniform and compact and free of obvious air holes, cracks and other defects, and metallurgical bonding is formed by the amorphous composite coating and a base body; and high microhardness and excellent abrasion resistance and corrosion resistance are achieved. The preparation technology is simple, workpiece dimensions are not limited, and large coatings can be obtained.

Description

technical field [0001] The invention belongs to the technical field of surface treatment of materials, and in particular relates to a cladding amorphous composite coating on the surface of nickel-aluminum bronze and a preparation method thereof. Background technique [0002] Nickel-aluminum bronze has good mechanical properties and corrosion resistance, and is widely used in the manufacture of ship propellers. However, due to the problems of composition segregation, coarse grain, looseness and stress concentration in as-cast nickel-aluminum bronze, it is prone to corrosion fatigue, cavitation corrosion and pitting corrosion in the harsh marine environment, which will affect the service life of the material. In addition, the propeller It is also subject to sediment wear and biofouling, increasing its surface roughness and reducing its propulsion efficiency. [0003] Laser cladding is a new surface modification technology, which can prepare a reinforced layer with various cha...

Claims

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Application Information

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IPC IPC(8): C23C24/10C22C9/01C22C45/10
CPCC22C9/01C22C45/10C23C24/106
Inventor 张德闯赵晴晴林建国檀朝桂童先
Owner XIANGTAN UNIV
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