Nanocarbon clad titanium carbide enhanced nickel-based composite coating material and laser cladding process thereof

A carbon-coated titanium carbide and composite coating technology, applied in the direction of metal material coating process, coating, etc., can solve the problem of increasing the cracking tendency of the coating, and achieve excellent corrosion resistance and friction and wear performance, large-scale and High degree of automation, uniform and dense organization

Inactive Publication Date: 2013-03-20
DALIAN UNIV OF TECH
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Problems solved by technology

In order to meet the performance requirements of the workpiece under severe friction and wear conditions, the content of carbon and silicon in the nickel-based self-fluxing alloy is usually increased to increase its wear resistance, but this will inevitably increase the cracking tendency of the coating

Method used

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  • Nanocarbon clad titanium carbide enhanced nickel-based composite coating material and laser cladding process thereof
  • Nanocarbon clad titanium carbide enhanced nickel-based composite coating material and laser cladding process thereof
  • Nanocarbon clad titanium carbide enhanced nickel-based composite coating material and laser cladding process thereof

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Embodiment Construction

[0026] The technical solution of the present invention will be further described below in combination with specific embodiments.

[0027] Select Ni with a particle size of 45-180μm 65.8 Cr 15 B 3.0 Si 3.5 C 0.7 Fe 12 Nickel-based self-fluxing alloy powder is used as the matrix material of the cladding layer, carbon-coated titanium carbide with a particle size of 500nm is selected as the reinforcing phase, and its addition amount is 0.5-14 vol.%. Firstly, the composite powder is prepared according to the stoichiometric ratio. Then, the prepared composite powder is wet-mixed by grinding method. Pre-place the composite powder on the surface of 300M steel (the thickness of the preset layer is 1mm), and use 5KW cross-flow CO under the protection of argon 2 The laser performs multiple overlapping laser cladding. The specific process parameters of laser cladding are: laser power 3.0KW, scanning speed 3.0mm / s, spot diameter 5.0mm, lap rate 20%.

[0028] The XRD pattern of the...

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Abstract

The invention discloses a nanocarbon clad titanium carbide enhanced nickel-based composite coating material and a laser cladding process thereof, belonging to the technical field of material surface modification. The nanocarbon clad titanium carbide enhanced nickel-based composite coating material is prepared from Ni65.83 Cr15B3.0Si3.5C0.7Fe12 nickel-based self-fluxing alloy powder as a matrix material and nanocarbon clad titanium carbide of 0.5-20vol.% as a wild phase on a steel and alloy matrix by using a laser cladding technology. The nanocarbon clad titanium carbide enhanced nickel-based composite coating material has the advantages of uniform and compact coating structure, good flexibility and excellent corrosion resistance and wear resistance, has better metallurgical bonding with the matrix, can meet the requirements of carbon steel and alloy steel members for friction wear resistance under different working conditions, is large in scale and high in automation degree in a coating preparation process, and can be widely applied to fields such as aerospace, machinery, automobiles, war industry and the like.

Description

technical field [0001] The invention belongs to the technical field of material surface modification. The invention provides a carbon-coated titanium carbide reinforced nickel-based composite coating material and its laser cladding process. Background technique [0002] Laser cladding is to place the selected coating material on the surface of the substrate to be clad with different fillers, and it is irradiated by laser to make it melt with a thin layer of the substrate surface at the same time, and after rapid solidification, it forms an extremely thin layer. Low, surface coating that is metallurgically bonded to the substrate, thereby significantly improving the surface properties of the substrate. [0003] Nickel-based self-fluxing alloys have good corrosion resistance, oxidation resistance and wettability, and are currently a type of coating material system commonly used in laser cladding. In order to meet the performance requirements of the workpiece under severe fri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/03C22C32/00C23C30/00C23C24/10
Inventor 王存山柴龙顺董星龙黄昊
Owner DALIAN UNIV OF TECH
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