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Non-cracking high-wear-resistance and corrosion-resistance nickel-based composite material and preparation method thereof

A composite material and wear-resistant technology, applied in the fields of laser cladding, laser thermal spraying, and laser additive manufacturing, it can solve the problems of complex preparation process, poor plastic toughness, etc. The effect of the more complex preparation process

Pending Publication Date: 2022-07-05
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention provides a non-cracking, high wear-resistant and corrosion-resistant nickel-based composite material and a preparation method thereof, aiming at solving the defects of poor plasticity and toughness of the nickel-based composite material and a relatively complicated preparation process, by adding a very small amount of alloy elements, Use a simple process to realize the modification of nickel-based powders, simplifying the preparation process

Method used

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  • Non-cracking high-wear-resistance and corrosion-resistance nickel-based composite material and preparation method thereof
  • Non-cracking high-wear-resistance and corrosion-resistance nickel-based composite material and preparation method thereof

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Embodiment 1

[0028] refer to figure 1 and figure 2 As shown in the figure, the embodiment of the present invention provides a nickel-based composite material with high wear resistance and corrosion resistance without cracking. Powder and reinforced ceramic phase powder, wherein the powder particle size of the nickel-based alloy powder is 10-150 μm, the single particle size of the niobium powder is 4-6 μm, the aggregate size of the niobium powder is 10-150 μm, and the reinforced ceramic phase powder includes carbonization In at least one of the niobium powder and the niobium boride powder, the single particle size of the reinforced ceramic phase powder is 1-4 μm, and the aggregate size of the reinforced ceramic phase powder is 10-150 μm. The nickel-based alloy powder includes, but is not limited to, nickel 45, nickel 40, nickel 50, nickel 55, nickel 60, etc., which is not limited in the embodiment of the present invention.

[0029] In the embodiment of the present invention, the brittle ...

Embodiment 2

[0033] refer to figure 1 and figure 2 As shown in the figure, the embodiment of the present invention provides a nickel-based composite material with high wear resistance and corrosion resistance without cracking. Powder and niobium carbide powder, wherein the nickel-based alloy powder has a powder particle size of 10 to 150 μm, a single particle size of the niobium powder is 4 to 6 μm, and the niobium powder has an aggregate size of 10 to 150 μm. The single particle size of the niobium powder is 1-4 μm, and the aggregate size of the niobium carbide powder is 10-150 μm.

[0034] By adding a certain proportion of niobium and niobium carbide to the nickel-based alloy powder, niobium is a strong carbide forming element, and it will preferentially combine with carbon to form niobium carbide in the molten pool, avoiding the formation of coarse carbides, and at the same time, niobium carbide has lower The Gibbs free energy of the alloy will preferentially grow in the molten pool,...

Embodiment 3

[0036] The embodiment of the present invention provides a nickel-based composite material with high wear resistance and corrosion resistance without cracking. The ceramic phase powder, wherein the powder particle size of the nickel-based alloy powder is 10-150 μm, the single particle size of the tantalum powder is 4-6 μm, the aggregate size of the tantalum powder is 10-150 μm, and the strengthened ceramic phase powder includes tantalum carbide powder and In at least one of the tantalum boride powders, the single particle size of the reinforced ceramic phase powder is 1-4 μm, and the aggregate size of the reinforced ceramic phase powder is 10-150 μm.

[0037] In the present invention, a certain proportion of tantalum, tantalum carbide or tantalum boride is added to the nickel-based alloy powder. Tantalum is a strong carbide forming element, and it will preferentially combine with carbon or boron in the molten pool to form tantalum carbide or tantalum boride, so as to avoid The ...

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Abstract

The invention discloses a non-cracking nickel-based composite material with high wear resistance and corrosion resistance and a preparation method thereof, and belongs to the technical field of laser additive manufacturing. A certain proportion of niobium or tantalum and at least one of niobium carbide powder, niobium boride powder, tantalum carbide powder and tantalum boride powder in reinforced ceramic phase powder are added into nickel-based alloy powder, and niobium and tantalum are both strong carbide forming elements and can be preferentially combined with carbon in a molten pool to generate niobium carbide or tantalum carbide; niobium carbide or tantalum carbide has relatively low Gibbs free energy and can preferentially grow up in a molten pool, and meanwhile, a certain proportion of reinforced ceramic phase powder is added, so that a dispersion strengthening effect can be achieved, and the hardness of the alloy is prevented from being greatly reduced; therefore, the plasticity and toughness of the nickel-based composite material powder are improved by a method for inhibiting the generation of a coarse brittle phase and increasing heterogeneous nucleation particles, and the prepared nickel-based composite coating does not crack and has relatively high wear resistance and corrosion resistance.

Description

technical field [0001] The invention relates to the technical fields of laser additive manufacturing, laser cladding and laser thermal spraying, in particular to a non-cracking, high wear-resistant and corrosion-resistant nickel-based composite material and a preparation method thereof. Background technique [0002] At present, when the nickel-based coating is prepared by laser cladding technology in China to improve the wear resistance of the substrate, due to the high hardness of the Ni45 or Ni60 powder used, the resulting coating has poor plasticity and toughness. Defects such as cracks are easily generated during the preparation process, and these defects will greatly reduce the corrosion resistance of the coating, so that the substrate cannot be effectively protected. However, most of the current methods for preparing nickel-based composite materials are relatively complex, or the added elements are relatively high and the price is high, resulting in a substantial incre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/04B22F9/08B22F9/12C22C19/03
CPCB22F9/04B22F9/12B22F9/082C22C19/03B22F2009/043
Inventor 王豫跃张景纯牛强赖亚楠李长久杨冠军
Owner XI AN JIAOTONG UNIV
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