A method for preparing a corrosion-resistant, anti-fouling, high-plasticity multi-principal alloy with high copper content and no segregation

A multi-principal alloy, corrosion-resistant technology, applied in the field of marine metal materials, can solve the problems of anti-fouling, corrosion resistance, mechanical property conflict, etc., and achieve the effects of improving mutual solubility, excellent marine anti-fouling performance, and excellent high plasticity

Active Publication Date: 2022-03-22
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0009] The invention provides a method for preparing a corrosion-resistant, anti-fouling, high-plasticity multi-principal alloy with high copper content and no segregation, which solves the conflicting problems of anti-fouling, corrosion resistance and mechanical properties in existing alloys

Method used

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  • A method for preparing a corrosion-resistant, anti-fouling, high-plasticity multi-principal alloy with high copper content and no segregation
  • A method for preparing a corrosion-resistant, anti-fouling, high-plasticity multi-principal alloy with high copper content and no segregation
  • A method for preparing a corrosion-resistant, anti-fouling, high-plasticity multi-principal alloy with high copper content and no segregation

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Effect test

Embodiment 1

[0040] Preparation method of 80wt%[Co(20)Cr(20)Fe(20)Ni(20)Mn(20)]+20wt%Cu alloy with high copper content, no segregation, anti-corrosion, antifouling and high plasticity:

[0041] 1) Preparation of initial corrosion-resistant FCC phase high-entropy alloy

[0042] Co(20)Cr(20)Fe(20)Ni(20)Mn(20) high-entropy alloy was used as the initial high-entropy alloy, and the metal raw materials were weighed according to the proportion, and the amounts of Co, Cr, Ni, Fe, and Mn metal raw materials were Purity >99.9%, after cleaning and drying the metal raw material, put it into the arc melting equipment, and repeat the melting for more than 4 times to ensure that the alloy is prepared uniformly and obtain the initial high-entropy alloy block;

[0043] 2) Preparation of initial corrosion-resistant FCC phase high-entropy alloy powder

[0044] Place the initial high-entropy alloy block prepared in step 1) in the atomization pulverization equipment, vacuumize <10Pa, and then fill it with hig...

Embodiment 2

[0051] Preparation method of 95wt% [Co(15)Cr(25)Fe(20)Ni(18)Mn(22)]+5wt%Cu alloy with high copper content, no segregation, corrosion resistance, antifouling and high plasticity:

[0052] 1) Preparation of initial corrosion-resistant FCC phase high-entropy alloy

[0053] Co(15)Cr(25)Fe(20Ni(18)Mn(22) high-entropy alloy is used as the initial high-entropy alloy, and the metal raw materials are weighed according to the proportion, and the purity of Co, Cr, Ni, Fe, and Mn metal raw materials> 99.9%, after the metal raw material is cleaned and dried, it is put into the arc melting equipment and smelted repeatedly for more than 4 times to ensure that the alloy is evenly prepared and the initial high-entropy alloy block is obtained;

[0054] 2) Preparation of initial corrosion-resistant FCC phase high-entropy alloy powder

[0055] Place the initial high-entropy alloy block prepared in step 1) in the atomization powder making equipment, vacuum <5Pa, and then fill it with high-purity ...

Embodiment 3

[0062] Preparation method of 85wt%[Co(20)Cr(15)Fe(22)Ni(25)Mn(18)]+15wt%Cu alloy with high copper content, no segregation, corrosion resistance, anti-fouling and high plasticity:

[0063] 1) Preparation of initial corrosion-resistant FCC phase high-entropy alloy

[0064] Co(20)Cr(15)Fe(22)Ni(25)Mn(18) high-entropy alloy was used as the initial high-entropy alloy, and the metal raw materials were weighed according to the proportion, and the amounts of Co, Cr, Ni, Fe, and Mn metal raw materials were Purity >99.9%, clean and dry the metal raw material, put it into the induction melting equipment, and repeat the melting for more than 4 times to ensure that the alloy is prepared uniformly and obtain the initial high-entropy alloy block;

[0065] 2) Preparation of initial corrosion-resistant FCC phase high-entropy alloy powder

[0066] Place the initial high-entropy alloy block prepared in step 1) in the atomization pulverization equipment, vacuumize <8Pa, and then fill it with hig...

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Abstract

The invention discloses a method for preparing a corrosion-resistant, anti-fouling and high-plasticity multi-principal alloy with high copper content and no segregation. The multi-principal FCC phase high-entropy alloy is selected as the initial alloy, and the mutual solubility is improved based on high entropy. The powder metallurgy method obtains sufficient diffusion, realizes the uniform distribution of 5-20wt% Cu in the solid solution structure, and solves the problem of grain boundary segregation of Cu in the FCC phase high-entropy alloy. The operation of the invention is simple and controllable, and the prepared material takes into account the plasticity higher than 75%, excellent corrosion resistance and antifouling performance, and has important application prospects in the field of marine engineering.

Description

technical field [0001] The invention relates to the technical field of marine metal materials, in particular to a method for preparing a corrosion-resistant, anti-fouling, high-plasticity multi-principal alloy in a marine environment. Background technique [0002] Ocean development is crucial to our country's resource acquisition, people's livelihood development and military strength enhancement. Marine equipment serving in seawater needs to face complex and harsh environments; among them, seawater corrosion and microbial adhesion are extremely harmful to equipment materials, which will seriously deteriorate the performance and service life of marine materials, increase the operating resistance of equipment, and cause energy loss. In order to ensure the smooth development of my country's marine industry, it is urgent to develop strong and tough structural materials with independent property rights of corrosion resistance and antifouling integration. [0003] At present, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/04C22C30/02B22F9/04B22F3/105B22F3/14B22F9/08C22C30/00
CPCC22C1/04C22C30/02B22F9/04B22F3/105B22F3/14B22F3/1007B22F9/082C22C30/00B22F2009/043B22F2003/1051B22F2009/0824B22F2009/0848
Inventor 乔竹辉于源刘维民马雯雯李彤阳崔高熙
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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