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A kind of multi-principal element alloy and its method for treating the surface of titanium alloy

A multi-principal alloy and surface treatment technology, applied in metal material coating process, coating, fusion spraying, etc., can solve the problems of reducing the fatigue performance of the substrate, poor impact resistance, and weak bonding of the substrate, so as to improve the durability Abrasiveness, prevention of titanium fire, promotion of uniform fusion effect

Active Publication Date: 2017-07-07
宝鸡市中宇稀有金属有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Technologies such as micro-arc oxidation, plasma spraying, supersonic spraying, ion implantation, electron beam deposition, laser nitriding, and double-layer glow ionization can be applied to the surface modification of titanium alloys; however, although these technologies are improving the surface of titanium alloys Some effects have been achieved in terms of friction and wear, high temperature oxidation, flame retardancy, etc., but these surface technologies also have their own limitations, such as thin coating layer, poor impact resistance, or weak combination with the substrate, or Significantly reduce the fatigue performance of the matrix and other shortcomings, which cannot meet the current needs, so it is necessary to develop coating materials and preparation technologies with higher performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] 1. A multi-principal alloy, in molar fractions, comprising the following components: 23 parts of Zr, 28 parts of Ni, 28 parts of Si, 18 parts of Ta, 1 part of Ti, 2 parts of CeO 2 .

[0016] Two, the above-mentioned multi-principal alloy is used for the method for titanium alloy surface treatment, comprises the following steps:

[0017] 1) Clean the TC4 titanium alloy base material with acetone; after cleaning, perform sandblasting roughening treatment.

[0018] 2) Spray the proportioned multi-principal alloy powder on the surface of the titanium alloy substrate treated in step 1) with plasma spraying equipment; wherein, the particle size of the multi-principal alloy powder is -200~+350 mesh; spraying Argon protection was carried out during the process, and the spray thickness was 0.3 mm.

[0019] 3) Adopt TJ-HL-T5000 type CO with maximum power of 5 kW 2 The laser remelts the plasma sprayed surface treated in step 2). During the remelting process, argon gas is used f...

Embodiment 2

[0022] 1. A multi-principal alloy, in molar fractions, comprising the following components: 28 parts of Zr, 22 parts of Ni, 22 parts of Si, 23 parts of Ta, 3 parts of Ti, 2 parts of CeO 2 .

[0023] Two, the above-mentioned multi-principal alloy is used for the method for titanium alloy surface treatment, comprises the following steps:

[0024] 1) Clean the TA15 titanium alloy substrate with absolute ethanol; after cleaning, perform sandblasting roughening treatment.

[0025] 2) Spray the proportioned multi-principal alloy powder on the surface of the titanium alloy substrate treated in step 1) with plasma spraying equipment; wherein, the particle size of the multi-principal alloy powder is -200~+350 mesh; spraying Argon protection was carried out during the process, and the spray thickness was 0.5 mm.

[0026] 3) Adopt TJ-HL-T5000 type CO with maximum power of 5 kW 2 The laser remelts the plasma sprayed surface treated in step 2). During the remelting process, argon gas is...

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Abstract

The invention discloses a multi-principal element alloy and a method for surface treatment of a titanium alloy. The multi-principal element alloy comprises, by mole, 18-30 parts of Zr, 18-30 parts of Ni, 18-30 parts of Si, 18-30 parts of Ta, 1-10 parts of Ti and 2-5 parts of CeO2. According to the method, a titanium alloy base material is cleaned and subjected to sand blasting roughening treatment, then plasma spraying equipment is used for spraying multi-principal element alloy powder on the surface of the titanium alloy base material, finally the plasma-sprayed surface is subjected to remelting treatment through a CO2 laser device, and a coating is obtained. The prepared multi-principal element alloy coating adopts characteristics of high-entropy effect, slow diffusion effect, nanophase reinforcement, super-high lattice deformation, cocktail effect and the like of the multi-principal element alloy, abrasion resistance and high temperature oxidation resistance of the titanium alloy can be remarkably improved, and titanium fire can be prevented.

Description

technical field [0001] The invention belongs to the technical field of material surface treatment and strengthening, and in particular relates to a multi-principal alloy and a method for treating the surface of a titanium alloy. Background technique [0002] Titanium and titanium alloys have the advantages of low specific gravity, high specific strength, high yield ratio, strong corrosion resistance and good mechanical properties under high temperature conditions, and are gradually being used in many fields. However, due to the high friction coefficient and large fluctuations of titanium alloys, poor wear resistance, low oxidation resistance after reaching a certain temperature, easy to be ignited, and the flame has a tendency to spread spontaneously, these problems make it more widely used. limit. Since most of these problems of titanium alloys are not caused by the overall properties of the material, but are mainly related to the surface properties, it is an ideal choice ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C30/00C23C4/134C23C4/06C23C4/18
CPCC22C30/00C22C32/0015C23C4/06C23C4/18
Inventor 黄灿涂坚柴林江王正曦周志明
Owner 宝鸡市中宇稀有金属有限公司
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