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High-temperature high-toughness Ni-Co-Mn-Sn-Cu alloy with high magnetocaloric effect, preparation method, and application thereof

A ni48-xcoxmn37sn9cu6, magneto-caloric effect technology, applied in the direction of magnetic materials, coil manufacturing, magnetic objects, etc., can solve the problem of high brittleness, achieve the effect of increasing fracture strength, improving magnetocaloric performance, increasing compression fracture strength and fracture strain

Inactive Publication Date: 2019-11-08
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the problems of the existing Ni-Mn-Sn ferromagnetic shape memory alloy system, such as high brittleness and difficulty in being used at a higher ambient temperature, and provide a Ni-Co-Mn with high temperature, high toughness and large magnetocaloric effect -Sn-Cu alloy, preparation method and application thereof

Method used

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  • High-temperature high-toughness Ni-Co-Mn-Sn-Cu alloy with high magnetocaloric effect, preparation method, and application thereof
  • High-temperature high-toughness Ni-Co-Mn-Sn-Cu alloy with high magnetocaloric effect, preparation method, and application thereof
  • High-temperature high-toughness Ni-Co-Mn-Sn-Cu alloy with high magnetocaloric effect, preparation method, and application thereof

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specific Embodiment approach 1

[0022] Specific embodiment 1: The chemical formula of a Ni-Co-Mn-Sn-Cu alloy with high temperature, high toughness and large magnetocaloric effect in this embodiment is Ni 48-x Co x Mn 37 Sn 9 Cu 6 , Where x is the mole fraction, 0<x≦12, and the sum of the moles of the elements in the alloy is 100.

specific Embodiment approach 2

[0023] Specific implementation manner 2: In this embodiment, a method for preparing a Ni-Co-Mn-Sn-Cu alloy with high temperature, high toughness and large magnetocaloric effect is completed according to the following steps:

[0024] 1. Material preparation: Ni according to the general chemical formula 48-x Co x Mn 37 Sn 9 Cu 6 Compounding, where x is the mole fraction, 0<x≤12 and the sum of the moles of the elements in the alloy is 100, and nickel, manganese, tin, cobalt and copper are respectively weighed as raw materials;

[0025] 2. Place the raw materials weighed in step 1 in a melting crucible, and perform arc melting to obtain Ni-Co-Mn-Sn-Cu button ingots;

[0026] 3. The Ni-Co-Mn-Sn-Cu button ingot is mechanically polished to remove surface impurities, and then cleaned with acetone for 2 to 3 times and then cleaned with alcohol for 2 to 3 times and packaged in a vacuum of 10 -3 In the Pa quartz tube, it is homogenized at 1073K for 36~48h, and quenched into ice water to obtain N...

specific Embodiment approach 3

[0027] Specific embodiment three: This embodiment is different from the specific embodiment two in that the step one is Ni according to the general chemical formula 48-x Co x Mn 37 Sn 9 Cu 6 The batching is carried out, where x is the mole fraction and x=6. Others are the same as the second embodiment.

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Abstract

The invention relates to a high-temperature high-toughness Ni-Co-Mn-Sn-Cu alloy with a high magnetocaloric effect, a preparation method, and application thereof, belongs to the technical field of magnetic materials, and particularly relates to the high-temperature high-toughness Ni-Co-Mn-Sn-Cu alloy with the high magnetocaloric effect, the preparation method, and the application thereof. The invention aims to solve the problems that an existing Ni-Mn-Sn ferromagnetic shape-memory alloy system is high in brittleness and hard to meet the use requirement under high temperature environment. A chemical general formula is Ni48-xCoxMn37Sn9Cu6, wherein x is mole fraction and is larger than 0 and smaller than or equal to 12; and the sum of mole number of elements in the alloy is 100. The method comprises the steps of (1) preparing materials; (2) carrying out electric arc meting; and (3) carrying out homogenization treatment so as to finally obtain an Ni48-xCoxMn37Sn9Cu6 magnetic refrigeration alloy material.

Description

Technical field [0001] The invention belongs to the technical field of magnetic materials, and specifically relates to a Ni-Co-Mn-Sn-Cu alloy with high temperature, high toughness and large magnetocaloric effect, a preparation method and application thereof. Background technique [0002] Efficient energy use and environmental protection, as the foundation of the sustainable development strategies of all countries, have become the focus of global attention. At present, vapor compression refrigeration technology faces the challenge of replacing refrigerants and improving refrigeration efficiency. It is urgent to find alternative refrigeration technologies. In recent years, magnetic refrigeration technology has proven to be a promising environment-friendly and energy-efficient refrigeration technology. In the development process of magnetic refrigeration technology, Ni-Mn-Sn ferromagnetic shape memory alloy has direct magnetic field induced reverse martensitic transformation (MFIR...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C30/02C22C30/04C22C1/02C22F1/00H01F1/01H01F41/10
CPCC22C1/023C22C19/03C22C30/02C22C30/04C22F1/10H01F1/015H01F41/10
Inventor 张琨谭昌龙田晓华赵文彬黄跃武
Owner HARBIN UNIV OF SCI & TECH
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