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Method of forming TiB2 particle-reinforced high-entropy alloy coating on titanium alloy

A particle-enhanced, high-entropy alloy technology, applied in metal material coating process, coating, superimposed layer plating, etc., can solve the problems of blank technology and method, less research work, poor oxidation resistance, etc. The effect of improving hardness and oxidation resistance, improving wear resistance and oxidation resistance, and improving wear resistance

Active Publication Date: 2020-04-17
GUIZHOU INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Although a lot of research work has been carried out on the development of new systems of high-entropy alloys, there is still less research work on the connection of high-entropy alloys and the combination of high-entropy alloys and existing metal materials, resulting in some technologies and methods. still blank
As we all know, titanium alloy is an alloy with excellent high temperature performance and chemical corrosion resistance. It is often used in aerospace and military industries, but its disadvantages are poor oxidation resistance and wear resistance. Therefore, the surface modification of titanium alloys and surface coating preparation technology research work carried out more
Combining high-entropy alloys with high wear resistance and good mechanical properties with titanium alloys forms a layer of high-entropy alloy coatings with excellent performance on the surface of titanium alloys, which can effectively improve the weaknesses of titanium alloys, increase the use of materials and service life, but there are still few related researches

Method used

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  • Method of forming TiB2 particle-reinforced high-entropy alloy coating on titanium alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A Ti-6Al-4V alloy with a size of 150×100×10 mm was subjected to TiB 2 Particle Reinforced CoCrCuFeNiMoMn High Entropy Alloy Coating

[0028] Polish the surface of the base metal with 2500 mesh sandpaper, clean it with ultrasonic waves for 30 minutes, and then dry it in a resistance furnace at 40°C. Use magnetron sputtering equipment to first use Co as the target material, and coat a Co film on the Ti-6Al-4V alloy, with a thickness of Then use Ni as the target material to coat Ni film on the basis of Co film with a thickness of 35nm, and finally use Cr as the target material to plate Cr film on the basis of Co and Ni film with a thickness of 45nm. Co, Cr, Cu, Fe, Ni, Mo, Mn, TiB with a particle size of 25 microns 2 The powder is uniformly mixed by a ball mill, and the molar ratio of the mixed powder is Co:Cr:Cu:Fe:Ni:Mo:Mn:TiB 2 = 1:1:1:1:1:1:1:0.3. Add the mixed powder to the feeding system of the plasma cladding equipment, feed 99.9% argon gas, and spray the mixed p...

Embodiment 2

[0030] Industrial pure titanium (purity 99.7%) alloy with dimensions 180×100×15 mm for TiB 2 Particle Reinforced CoCrCuFeNiMoMn High Entropy Alloy Coating

[0031] The surface of the base metal was polished with 3000-grit sandpaper, cleaned ultrasonically for 30 minutes, and then dried in a resistance furnace at 30°C. Use magnetron sputtering equipment to first use Co as the target material, coat Co film on the alloy with a thickness of 70nm, then use Ni as the target material, coat Ni film on the basis of the Co film with a thickness of 70nm, and finally use Cr as the target Material, on the basis of Co and Ni film, Cr film is plated, the thickness is 70nm. Co, Cr, Cu, Fe, Ni, Mo, Mn, TiB with a particle size of 10 microns 2 The powder is uniformly mixed by a ball mill, and the molar ratio of the mixed powder is Co:Cr:Cu:Fe:Ni:Mo:Mn:TiB 2= 1:1:1:1:1:1:1:0.3. The mixed powder is added to the feeding system of the plasma cladding equipment, and 99.9% argon gas is introduced...

Embodiment 3

[0033] Industrial pure titanium (purity 99.9%) alloy with dimensions 180×100×25 mm for TiB 2 Particle Reinforced CoCrCuFeNiMoMn High Entropy Alloy Coating

[0034] The surface of the base metal was polished with 2000-grit sandpaper, cleaned by ultrasonic for 20 minutes, and then dried in a vacuum resistance furnace at 50°C. Use magnetron sputtering equipment to first use Co as the target material, coat a Co film on the alloy with a thickness of 10nm, then use Ni as the target material, coat a Ni film on the basis of the Co film with a thickness of 10nm, and finally use Cr as the target Material, on the basis of Co and Ni film, plate Cr film with a thickness of 10nm. Co, Cr, Cu, Fe, Ni, Mo, Mn, TiB with a particle size of 30 microns 2 The powder is uniformly mixed by a ball mill, and the molar ratio of the mixed powder is Co:Cr:Cu:Fe:Ni:Mo:Mn:TiB 2 = 1:1:1:1:1:1:1:0.3. The mixed powder is added to the feeding system of the plasma cladding equipment, and 99.9% argon gas is i...

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Abstract

The invention discloses a method of forming a TiB2 particle-reinforced high-entropy alloy coating on titanium alloy. The method comprises the steps that a Co film, an Ni film and a Cr film are formedon the surface of a titanium alloy substrate in advance in sequence, then Co, Cr, Cu, Fe, Ni, Mo, Mn and TiB2 mixed powder covers the titanium alloy substrate with the pre-formed film in a fusion mode, and therefore the TiB2 particle-reinforced CoCrCuFeNiMoMn high-entropy alloy coating can be obtained. The coating which is obtained according to the method has the advantages of being high in wear resistance and high in oxidation resistance.

Description

technical field [0001] The invention relates to a method for preparing a high-entropy alloy coating, in particular to a method for preparing TiB on a titanium alloy 2 Method for Particle Reinforcement of High Entropy Alloy Coatings. Background technique [0002] High-entropy alloy is a new type of alloy system. In terms of alloy design, it has changed the design concept of traditional alloy materials based on a certain alloy element. It adopts four or more elements in accordance with the equiatom configuration. Finally, a multi-principal alloy system is formed. This multi-principal alloy is characterized by its high mixing entropy and configuration entropy. Driven by this high entropy, it forms a fully solid-solution microstructure, so it is called a high-entropy alloy. The research on high-entropy alloys first started around 1995. In 2004, scholars in Taiwan, China named them high-entropy alloys for the first time. Due to the full solid solution structure of high-entropy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C28/02C23C14/35C23C14/16C23C24/10C22C30/02C22C32/00
CPCC23C28/027C23C14/352C23C14/165C23C24/103C22C30/02C22C32/0073
Inventor 秦庆东张英哲李娟苏向东
Owner GUIZHOU INST OF TECH
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