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Ni-co-mn-sn-cu alloy with high temperature, high toughness and large magnetocaloric effect, preparation method and application thereof

A technology of ni48-xcoxmn37sn9cu6 and magnetocaloric effect is applied in the field of preparing Ni-Co-Mn-Sn-Cu alloys with high temperature, high toughness and large magnetocaloric effect, which can solve the problems of high brittleness, and achieve the improvement of fracture strength, plasticity, and improvement. Effect of saturation magnetization

Inactive Publication Date: 2021-03-30
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Ni-co-mn-sn-cu alloy with high temperature, high toughness and large magnetocaloric effect, preparation method and application thereof
  • Ni-co-mn-sn-cu alloy with high temperature, high toughness and large magnetocaloric effect, preparation method and application thereof
  • Ni-co-mn-sn-cu alloy with high temperature, high toughness and large magnetocaloric effect, preparation method and application thereof

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specific Embodiment approach 1

[0022] Specific Embodiment 1: In this embodiment, a Ni-Co-Mn-Sn-Cu alloy with high temperature, high toughness and large magnetocaloric effect has a general chemical formula of Ni 48-x co x mn 37 sn 9 Cu 6 , wherein x is the mole fraction, 0<x≤12 and the sum of the moles of elements in the alloy is 100.

specific Embodiment approach 2

[0023] Specific embodiment two: 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 Perform batching, wherein x is the mole fraction, 0<x≤12 and the sum of the moles of elements in the alloy is 100, respectively weighing nickel block, manganese block, tin block, cobalt block and copper block as raw materials;

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

[0026] 3. Mechanically polish the Ni-Co-Mn-Sn-Cu button ingot to remove surface impurities, then clean it with acetone for 2 to 3 times and then with alcohol for 2 to 3 times and seal it in a vacuum of 10 -3 In the quartz tube of Pa, keep warm at 1073K for 36-48h for homogenization treatment, ...

specific Embodiment approach 3

[0027] Specific embodiment three: the difference between this embodiment and specific embodiment two is: in step one, according to the general chemical formula, it is Ni 48-x co x mn 37 sn 9 Cu 6 Carry out batching, wherein x is mole fraction, x=6. Others are the same as in 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 in particular relates to a Ni-Co-Mn-Sn-Cu alloy with high temperature, high toughness and large magnetocaloric effect, a preparation method and an application thereof. Background technique [0002] Efficient energy utilization and environmental protection, as the basis of sustainable development strategies of various countries, have become the focus of global attention. At present, vapor compression refrigeration technology is facing the challenge of replacing refrigerants and improving refrigeration efficiency. The search for alternative refrigeration technologies is imminent. In recent years, magnetic refrigeration technology has been proven to be a promising environment-friendly and energy-efficient refrigeration technology. In the development of magnetic refrigeration technology, Ni-Mn-Sn ferromagnetic shape memory alloy has a direct magnetic field-induced reverse martensitic...

Claims

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Application Information

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Patent Type & Authority Patents(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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