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Preparation method of in-situ self-generated titanium carbide particle reinforced nickel-based gradient coating

An in-situ self-generated, particle-enhanced technology, applied in coating, metal material coating process, etc., can solve the problem of difficult to obtain gradient coating, and achieve the effect of simple and effective process method, uniform distribution and firm bonding

Inactive Publication Date: 2011-12-07
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, when artificially adding reinforcing phase particles to prepare gradient coatings, generally it can only be prepared by multi-layer process, and it is difficult to obtain gradient coatings with continuous performance. fusion diffusion, it is possible to prepare gradient coatings with continuous performance

Method used

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  • Preparation method of in-situ self-generated titanium carbide particle reinforced nickel-based gradient coating
  • Preparation method of in-situ self-generated titanium carbide particle reinforced nickel-based gradient coating
  • Preparation method of in-situ self-generated titanium carbide particle reinforced nickel-based gradient coating

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Embodiment Construction

[0024] The present invention will be described in detail below in conjunction with specific embodiments.

[0025] In this embodiment, nickel powder and carbon powder are used as the main raw materials of the cladding strengthening layer and supplemented with a small amount of other elements. Ti-4Al-6V is used as the matrix material and as the donor of titanium element. According to 85%wt of nickel powder, carbon powder 13%wt, other element powder: elemental aluminum powder 1%wt + yttrium oxide 1%wt for batching, the particle size of nickel powder is 200 mesh, the particle size of carbon powder is 2000 mesh, and the particle size of other element powder is 100 mesh;

[0026] Mix the above-mentioned powders and mill them mechanically for 24 hours to obtain a uniformly mixed powder;

[0027] On the base material Ti-4Al-6V, the mixed powder with a thickness of about 1.2mm is preset by cold pressing; the above mixed powder is reacted with the base material by laser cladding to form...

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Abstract

The invention discloses a preparation method of an in-situ self-generated titanium carbide particle reinforced nickel-based gradient coating. Nickel powder, carbon powder and other element powders are mixed according to a certain ratio, and the obtained mixed powder is placed on a titanium alloy substrate. , using laser cladding to in-situ self-generate titanium carbide particles on the surface of the titanium alloy substrate, and finally generate a nickel-based gradient coating reinforced by in-situ self-generated titanium carbide particles on the surface of the titanium alloy substrate. The present invention adopts the method of laser cladding, and by rationally configuring the chemical composition of the cladding reinforcement layer, an in-situ self-generated reinforcement phase titanium carbide particle reinforcement phase is formed in the cladding layer, forming a uniform particle, a good distribution state, and a high titanium carbide content. The high reinforcing phase provides a simple, effective and feasible method to improve the strength, hardness and wear resistance of titanium alloys.

Description

technical field [0001] The invention relates to the field of preparation of new materials, in particular to a method for preparing an in-situ self-generated titanium carbide particle reinforced nickel-based gradient coating. Background technique [0002] Adding hard particles to the matrix material is an important method to improve the hardness and wear resistance of the material. Although there are various methods for adding hard particles as a reinforcing phase, such as forming more carbon steel on the surface of carbon steel by chemical carburizing Carbide particles, adjust the distribution, shape or structure of carbides in steel by heat treatment, form a strengthening layer on the surface of the substrate by laser cladding, etc., but the source of hard particles is generally only artificial addition and internal chemical reaction synthesis. . [0003] Artificially adding reinforcement phase particles is simple and convenient, and it is convenient to control the content...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10
Inventor 刘延辉李军
Owner SHANGHAI UNIV OF ENG SCI
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