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Preparation method of high-strength high-plasticity Ni50Mn34In11Co5 magnetic memory alloy

A magnetic memory and high plasticity technology, applied in metal processing equipment, transportation and packaging, etc., can solve the problems of large brittleness of shape memory alloy and high threshold value of driving magnetic field, and achieve the effect of high strength, excellent magnetic properties and fine structure.

Active Publication Date: 2018-05-29
DALIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the problems of the existing Ni-Mn-In-Co series shape memory alloys with high brittleness and high driving magnetic field threshold, the present invention provides a method for preparing Ni by combining metal injection molding and sintering processes. 50 mn 34 In 16-x co x (x=2,3,4,5) method of magnetic memory alloy

Method used

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  • Preparation method of high-strength high-plasticity Ni50Mn34In11Co5 magnetic memory alloy
  • Preparation method of high-strength high-plasticity Ni50Mn34In11Co5 magnetic memory alloy
  • Preparation method of high-strength high-plasticity Ni50Mn34In11Co5 magnetic memory alloy

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Embodiment 1

[0021] High strength, high plasticity Ni 50 mn 34 In 14 co 2 The magnetic memory alloy is prepared according to the following method: 50 parts of Ni powder with a particle size of 300 mesh, 34 parts of Mn powder, 14 parts of In powder and 2 parts of Co powder are mixed according to the atomic percentage, and stirred in a stirrer at a speed of 200 rpm Metal powder, make it evenly mixed, then add 2wt% binder (m epoxy resin: m polyamide = 4:1) of the total mass of the metal powder to make it fully mixed, and then add the above mixture to the metal injection molding machine In the process, the binder is melted by heating to 200°C to drive the metal powder into the mold cavity, and the injection embryo is obtained after applying a pressure of 20-40 kg to the mold / 10h-48h, and finally degreased, and finally used 1500 ℃-1700℃, pressure of 200-400 kg, vacuum degree of 10 -3 -10 -4MPa, the time is 20-40 minutes sintering process sintering, and finally get Ni with a particle size o...

Embodiment 2

[0023] High strength, high plasticity Ni 50 mn 34 In 13 co 3 The magnetic memory alloy is prepared according to the following method: 50 parts of Ni powder with a particle size of 300 mesh, 34 parts of Mn powder, 13 parts of In powder and 3 parts of Co powder are mixed according to the atomic percentage, and stirred at a speed of 200 rpm in a stirrer Metal powder, make it evenly mixed, then add 2wt% binder (m epoxy resin: m polyamide = 4:1) of the total mass of the metal powder to make it fully mixed, and then add the above mixture to the metal injection molding machine In the process, the binder is melted by heating to 200°C to drive the metal powder into the mold cavity, and the injection embryo is obtained after applying a pressure of 20-40 kg to the mold / 10h-48h, and finally degreased, and finally used 1500 ℃-1700℃, pressure of 200-400 kg, vacuum degree of 10 -3 -10 -4 MPa, the time is 20-40 minutes sintering process sintering, and finally get Ni with a particle size ...

Embodiment 3

[0025] High strength, high plasticity Ni 50 mn 34 In 12 co 4 The magnetic memory alloy is prepared according to the following method: 50 parts of Ni powder with a particle size of 300 mesh, 34 parts of Mn powder, 12 parts of In powder and 4 parts of Co powder are mixed according to the atomic percentage, and stirred at a speed of 200 rpm in a stirrer Metal powder, make it evenly mixed, then add 2wt% binder (m epoxy resin: m polyamide = 4:1) of the total mass of the metal powder to make it fully mixed, and then add the above mixture to the metal injection molding machine In the process, the binder is melted by heating to 200°C to drive the metal powder into the mold cavity, and the injection embryo is obtained after applying a pressure of 20-40 kg to the mold / 10h-48h, and finally degreased, and finally used 1500 ℃-1700℃, pressure of 200-400 kg, vacuum degree of 10 -3 -10 -4 MPa, the time is 20-40 minutes sintering process sintering, and finally get Ni with a particle size ...

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Abstract

The invention relates to a preparation method of high-strength high-plasticity Ni50Mn34In11Co5 magnetic memory alloy. High-strength high-plasticity Ni50Mn34In16-xCox(x=2,3,4,5) is obtained through material acquisition according to atomic percentages, mixing, forming, degreasing and sintering. The prepared magnetic shape memory alloy Ni50Mn34In16-xCox(x=2,3,4,5) has the advantages of good toughness, high strength, fine structure and the like, and develops an idea for the application of high-temperature high-plasticity shape memory alloy.

Description

[0001] This application is the application number 2017103065393, the application date is May 4, 2017, and the invention name is "a high-strength, high-plastic Ni 50 mn 34 In 16-x co x The divisional application of "Preparation method of magnetic memory alloy". technical field [0002] The invention relates to a high-strength, high-plastic Ni 50 mn 34 In 16-x co x A method for preparing a magnetic memory alloy. Background technique [0003] In 1996, Ullakko et al. 2 A reversible strain of about 0.2% was obtained in MnGa single crystal, which opened the prelude to the research of magnetically driven memory alloys, and has become a research hotspot in the field of shape memory alloys. The currently widely studied magnetic drive memory alloys mainly include: Ni-Mn-Ga(Al), Ni-Fe-Ga, Co-Ni-Ga(Al) and new Ni-Mn-In(Sn, Sb) alloys. Ni-Mn-Ga-based alloy is the earliest discovered and most widely studied magnetic shape memory alloy. Its magnetically induced strain comes from t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/04B22F3/115B22F1/00
CPCC22C1/0433B22F3/115B22F1/103B22F1/10
Inventor 董桂馥张倩倩陈建国
Owner DALIAN UNIV
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