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Laser deposited nickel-base alloy powder

A nickel-based alloy and laser cladding technology, which is applied in the direction of heating inorganic powder coating, etc., can solve the problems of inability to effectively adjust the tensile stress of the cladding layer, and achieve the effects of offsetting tensile stress, reducing sensitivity, and offsetting volume shrinkage

Inactive Publication Date: 2007-03-28
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above methods play a certain role in suppressing the occurrence of cracks in the cladding layer, they cannot effectively adjust the tensile stress of the cladding layer and thus Control cladding layer cracking

Method used

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  • Laser deposited nickel-base alloy powder
  • Laser deposited nickel-base alloy powder
  • Laser deposited nickel-base alloy powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1. Laser cladding of a high-hardness nickel-based alloy on the surface of a carbon steel substrate, and adding CuAlO, a material with a negative thermal expansion coefficient, to the cladding alloy 2 Composition of Al 2 o 3 , Cu.

[0019] Press Al 2 o 3 Weigh 1-5% Al by weight of nickel-based alloy with a molar ratio of 1:2 to Cu 2 o 3 and Cu are added to the nickel-based alloy powder, and mixed by ball milling for 60-120 minutes. Grind and clean the metal substrate to be clad, and use acetate fiber + acetone adhesive or other organic adhesives to mix and bond the alloy powder after ball milling on the metal substrate. The coating thickness is 1.0-1.2mm, and air-dried After that, laser cladding is carried out, and the process parameters of laser cladding treatment: laser wavelength 10.6μm, power density 2.0-3.0kW / cm 2 , beam scanning speed 3-6mm / s. After testing and analysis, it is found that the macroscopic appearance of the laser cladding layer is flat...

Embodiment 2

[0020] Example 2: Laser cladding of a high-hardness nickel-based alloy on the surface of a carbon steel substrate, and adding ZrV, a material with a negative thermal expansion coefficient, to the cladding alloy 2 o 7 The composition element ZrO 2 , V 2 o 5 .

[0021] Press ZrO 2 with V 2 o 5 Molar ratio 1:1 Weigh 1-10% ZrO by nickel-based alloy weight 2 and V 2 o 5 , add nickel-based alloy powder, ball mill and mix for 60-120 minutes, grind and wash the metal substrate to be clad, and use acetate fiber + acetone adhesive or other organic adhesive to mix and bond the alloy powder after ball milling On the metal substrate, the thickness of the coating is 1.0-1.2mm. After air-drying, laser cladding is carried out. Laser cladding process parameters: laser wavelength 10.6μm, power density 2.0-3.0kW / cm 2 , beam scanning speed 3-6mm / s. After testing and analysis, it is found that the macroscopic appearance of the laser cladding layer is flat, smooth, uniform, dense and fre...

Embodiment 3

[0022] Example 3: Laser cladding of a high-hardness nickel-based alloy on the surface of a carbon steel substrate, adding ZrW, a material with a negative thermal expansion coefficient, to the cladding alloy 2 o 8 Composition element WO 3 , ZrO 2 .

[0023] Press ZrO 2 with WO 3 ZrO with a molar ratio of 1:2 weighing 1-10% of the nickel-based alloy weight 2 with WO 3 , add nickel-based alloy powder, ball mill and mix for 60-120 minutes, grind and clean the metal substrate to be clad, and mix and bond the alloy powder after ball milling with cellulose acetate + acetone adhesive or other organic adhesive On the metal substrate, the thickness of the coating is 1.0-1.2mm. After air-drying, laser cladding is carried out. Laser cladding process parameters: laser wavelength 10.6μm, power density 2.0-3.0kW / cm 2 , beam scanning speed 3-6mm / s. After testing and analysis, it is found that the macroscopic morphology of the laser cladding layer is slightly worse than the above two e...

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Abstract

The present invention relates to a laser deposited nickel base alloy powder, belonging to the field of metal surface treatment material technology. It is characterized by that in its interior some raw material components capable of in-situ forming negative thermals expansion coefficient substance can be doped. The described raw material components capable of in-situ forming negative thermal expansion coefficient substance are Al2O3, Cu, ZrO2 and V2O5 or ZrO2 and WO3. The added quantity of Al2O3 and Cu is 1-5% of nickel base alloy weight, the mole ratio of Al2O3 and Cu is 1:2, the added quantity of ZrO2 and V2O5 is 1-10% of nickel base alloy weight, the mole ratio of ZrO2 and V2O5 is 1:1, and the added quantity of ZrO2 and WO3 is 1-10% of nickel base alloy weight, the mole ratio of ZrO2 and WO3 is 1:2. In the course of quick solidification of laser deposition the above-mentioned all components can in-situ produce the compounds of CuAlO2, ZrV2O7 or ZrW2O8 with negative thermal expansion coefficient.

Description

technical field [0001] The invention belongs to the technical field of metal surface treatment materials, and in particular relates to a laser cladding nickel-based alloy powder mixed with a raw material component capable of generating a material with a negative thermal expansion coefficient in situ, thereby suppressing cracking of the cladding layer. Background technique [0002] Laser cladding technology belongs to the field of surface technology. This technology uses a high-energy-density laser beam as a heat source to weld a layer of new materials on the surface of the base material, so that it can be made on the surface of general metal materials with wear resistance, corrosion resistance, oxidation resistance and heat resistance. The technology of materials with excellent performance such as stable performance. Laser cladding technology has the characteristics of rapid solidification and small deformation of the workpiece, and it shows broad application prospects in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F7/04B22F3/105C23C24/08
Inventor 梁二军王东升晁明举
Owner ZHENGZHOU UNIV
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