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Titanium carbide metal ceramic powder and method for laser cladding of powder

A cermet and laser cladding technology, which is applied in the coating process and coating of metal materials, can solve the problems of pores and uneven structure, and achieve the effect of high hardness, dense and uniform structure, and good surface quality

Inactive Publication Date: 2013-03-13
SHANTOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a titanium carbide cermet powder and a method for laser cladding the powder, to overcome the inhomogeneity of the structure at the lap joint of the laser cladding layer in the prior art, resulting in inhomogeneity of the structure, There are problems such as air holes

Method used

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  • Titanium carbide metal ceramic powder and method for laser cladding of powder
  • Titanium carbide metal ceramic powder and method for laser cladding of powder
  • Titanium carbide metal ceramic powder and method for laser cladding of powder

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Embodiment 1

[0033] The titanium carbide cermet powder of the present embodiment is composed of 30% titanium carbide, 2% lanthanum oxide and 68% nickel 60 by mass percentage, wherein nickel 60 is composed of 3% carbon, 19% chromium, 3% by mass fraction % boron, 2% silicon, 6% iron and 67% nickel.

Embodiment 2

[0035] The titanium carbide cermet powder of the present embodiment is composed of 28% titanium carbide, 1% lanthanum oxide and 71% nickel 60 by mass percentage, wherein nickel 60 is composed of 1% carbon, 12% chromium, 2% by mass fraction % boron, 1% silicon, 1% iron and 83% nickel.

Embodiment 3

[0037] The titanium carbide cermet powder of the present embodiment is composed of 29% titanium carbide, 2% lanthanum oxide and 69% nickel 60 by mass percentage, wherein nickel 60 is composed of 2% carbon, 16% chromium, 3% by mass fraction % boron, 1% silicon, 3% iron and 75% nickel.

[0038] The elements added in the titanium carbide cermet powder have their own functions. Nickel can dissolve a lot of alloying elements, and can maintain good structural stability. It can form coherent and ordered intermetallic compounds, making cladding The layer has higher high temperature strength; chromium element has solid solution strengthening and passivation effect, it can improve corrosion resistance and high temperature oxidation resistance, excess chromium is easy to form chromium carbide and chromium boride hard phase with carbon and boron, Thereby, the hardness and wear resistance of the cladding layer can be improved; a small amount of silicon and boron elements have the functions...

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Abstract

The invention relates to the technical field of metal surface treatment, and specifically discloses a titanium carbide metal ceramic powder and a method for laser cladding of the powder. The titanium carbide metal ceramic powder consists of titanium carbide, lanthanum oxide and nickel 60. The method comprises the following steps of: putting the titanium carbide ceramic powder in a ball mill to be ball-milled for 15 hours to 20 hours, and drying the ball-milled powder; mixing the dried powder and water glass into a paste powder; coating the paste powder onto the surface of a test block to be clad to be flatly pressed, and drying naturally; cladding the dried paste powder on the test block by using a pulsed laser machine; flatly grinding the clad test block, carrying out the polishing treatment of the clad surface, and then cleaning with anhydrous ethanol; and carrying out the hardness test and the wear test of the test block. The cladding layer obtained from the invention has the advantages of strong high temperature resistance, strong wear resistance, high hardness, compact and uniform structure, uniform thickness, grain refinement, few pores and cracks, good surface quality and the like.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment, in particular to a titanium carbide cermet powder and a method for laser cladding the powder. Background technique [0002] Laser cladding is an advanced surface modification technology. It uses a high-energy laser beam to melt the material added on the surface and the thin layer of the substrate to form a metallurgical bond with special functions and low dilution rate and combined with the substrate. coating, which can be used to make materials with excellent properties such as wear resistance, corrosion resistance, oxidation resistance and high temperature resistance on the surface of general steel. Laser cladding can prepare high-performance coatings on low-cost materials, so it can reduce energy consumption and save costs. Laser cladding forms a metallurgical bond, so it has a higher bonding strength than thermal spraying, electrodeposition, and electroplating. Laser claddin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00C23C24/10C22C19/03
Inventor 贺长林陈少克周中河
Owner SHANTOU UNIV
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