Fecovwnbsc high-entropy alloy powder for laser cladding and its use

A high-entropy alloy and laser cladding technology, applied in metal material coating process, coating and other directions, can solve the problems of larger sample size, low bonding strength, lower cost, etc., to reduce high temperature brittleness, no cracks, The effect of good macroscopic topography

Active Publication Date: 2020-07-14
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, research on high-entropy alloys mainly uses vacuum melting and casting to prepare bulk materials. cost increase in the sampling process, while laser cladding noble and gold can not only ensure excellent performance, but also effectively reduce costs
Although some scholars have prepared noble and gold coatings by means of magnetron sputtering and chemical deposition, but because the bonding method is usually physical bonding or mechanical bonding, the bonding strength between the coating and the substrate is low, and laser Cladding can not only form a metallurgical bond between the substrate and the coating to increase the bonding strength, but also effectively control the thickness of the coating, up to a few millimeters

Method used

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  • Fecovwnbsc high-entropy alloy powder for laser cladding and its use
  • Fecovwnbsc high-entropy alloy powder for laser cladding and its use
  • Fecovwnbsc high-entropy alloy powder for laser cladding and its use

Examples

Experimental program
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Effect test

Embodiment 1

[0023] The high-entropy alloy material described in this example is composed of six elemental powders of Fe, Co, V, W, Nb, and Sc, and the molar ratio of each component is: 1:1:1:1:1:0.02, and is analyzed by The electronic scale weighs various metal element powders. The total mass of metal powder is 50g. Sc: 0.10181g.

[0024] The preparation method of the cladding layer of high-entropy alloy material described in this embodiment comprises the following steps:

[0025] (1) After mixing the various powders, carry out vacuum ball milling, ball milling for 3.5 hours, and fully mix to obtain alloy powder with a particle size of 200-300 mesh.

[0026] (2) 45 steel is used as the base material, oxides are removed by mechanical grinding, oil stains are removed by acetone, and cleaned by ultrasonic alcohol.

[0027] (3) Evenly press the alloy powder material obtained in step (1) on the surface of the base material treated in step (2) to form a prefabricated layer with a thickness of...

Embodiment 2

[0031] The high-entropy alloy material described in this example is composed of six elemental powders of Fe, Co, V, W, Nb and Sc, and the molar ratio of each component is: 1:1:1:1:1:0.025, and is analyzed by The electronic scale weighs various metal element powders. The total mass of the metal powder is 50g. The masses of the metal powder are: Fe: 6.30453g, Co: 6.64227g, V: 5.74163g, W: 10.47003g, Nb: 20.71489g, Sc: 0.12665g.

[0032] The preparation method of the cladding layer of high-entropy alloy material described in this embodiment comprises the following steps:

[0033] (1) After mixing the various powders, carry out vacuum ball milling, ball milling for 3 hours, and fully mix to obtain alloy powder with a particle size of 204-310 mesh.

[0034] (2) 45 steel is used as the base material, oxides are removed by mechanical grinding, oil stains are removed by acetone, and cleaned by ultrasonic alcohol.

[0035] (3) Evenly press the alloy powder material obtained in step (...

Embodiment 3

[0039] The high-entropy alloy material described in this example is composed of six elemental powders of Fe, Co, V, W, Nb and Sc, and the molar ratio of each component is: 1:1:1:1:1:0.03, and is analyzed by The electronic scale weighs various metal element powders. The total mass of the metal powder is 50g. The masses of the metal powder are: Fe: 6.30134g, Co: 6.63891g, V: 5.73872g, W: 10.46472g, Nb: 20.7044g, Sc: 0.15191g.

[0040] The preparation method of the cladding layer of high-entropy alloy material described in this embodiment comprises the following steps:

[0041] (1) After mixing the various powders, carry out vacuum ball milling, ball milling for 3.5 hours, and fully mix to obtain alloy powder with a particle size of 200-300 mesh.

[0042] (2) 45 steel is used as the base material, oxides are removed by mechanical grinding, oil stains are removed by acetone, and cleaned by ultrasonic alcohol.

[0043] (3) Evenly press the alloy powder material obtained in step (...

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Abstract

The invention discloses FeCoVWNbSc high-entropy alloy powder used for laser cladding and a use method, and belongs to the technical field of laser surface modification. The FeCoVWNbSc high-entropy alloy powder comprises the following components of Fe, Co, V, W, Nb and Sc, wherein the molar ratio of Fe to Co to V to W to Nb to Sc is 1:1:1:1:1:0.02:0.04; Sc is added in a quinary alloy of Fe, Co, V,W and Nb, so that the elements react with one another to present excellent high-temperature-oxidation-resistance, corrosion-resistance and the like, and the structure of a coating is excellent; a finedilution can also be formed by the coating and a substrate through laser cladding, so that metallurgical combination is formed; a good combination effect is formed between the substrate and the coating, and durability of the coating is favorably improved.

Description

technical field [0001] The invention relates to a FeCoVWNbSc high-entropy alloy powder for laser cladding and a use method thereof, belonging to the technical field of laser surface modification. [0002] technical background [0003] Traditional alloys use one element as the main element (called the principal element), and the performance of the alloy is improved by adding an appropriate amount of other elements. High-entropy alloys, also known as multi-principal alloys, are composed of 5-13 elements, and the molar ratio of each element is between 5% and 35%. The performance of the alloy is determined by the joint action of multiple principal elements. High entropy alloys with high strength, high hardness, high temperature softening resistance and high corrosion resistance can be obtained through proper composition design, so they have important application prospects in some special working environments (such as aviation, aerospace, energy and other fields). [0004] At pre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/10C22C30/00
CPCC22C30/00C23C24/106
Inventor 刘洪喜石海张晓伟刘子峰
Owner KUNMING UNIV OF SCI & TECH
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