A room temperature magnetostrictive material and preparation method thereof

A magnetostrictive material and magnetostrictive technology, applied in the field of functional materials, can solve the problems of low magnetic order temperature, corundum tube rupture, volume expansion, etc., and achieve the effect of increasing the magnetostrictive value and reducing the cost

Active Publication Date: 2021-03-16
LUOYANG INST OF SCI & TECH
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The critical field of the driven magnetic phase transition at 300K is as high as 2.5T, which is very unfavorable for practical applications
First of all, the magnetic ordering temperature of this material is low (about 380K), and magnetic annealing cannot be applied
Then, due to the intense martensitic phase transformation, the volume expands rapidly, causing the corundum tube to rupture, and directional solidification cannot proceed.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A room temperature magnetostrictive material and preparation method thereof
  • A room temperature magnetostrictive material and preparation method thereof
  • A room temperature magnetostrictive material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A preparation method of a room temperature magnetostrictive material, comprising the following steps:

[0041] Step 1. Weigh the raw materials according to the stoichiometric ratio Mn:Ni:Co:Si=0.98:0.02:1:1, mix them evenly, pour the prepared raw materials into a beaker, and add an appropriate amount of concentrated hydrochloric acid. Add clean water and concentrated hydrochloric acid in a ratio of 3:1 and mix, stir for about 15 minutes, clean the oxides on the surface of the raw material, pour off the cleaning solution, add distilled water to clean the raw material again, and pour off the distilled water.

[0042] Step 2: Pour the raw materials into the copper crucible of the electric arc melting furnace. Put the elemental Zr into the copper crucible, number them sequentially, and close the furnace chamber. The electric arc furnace is cooled by a circulating water cooling system. Before smelting, use a mechanical pump to evacuate to below 9Pa, and then use a molecula...

Embodiment 2

[0047] Step 1. Weigh the raw materials according to the stoichiometric ratio Mn:Ni:Co:Si=0.97:0.03:1:1, mix them evenly, pour the prepared raw materials into a beaker, and add an appropriate amount of concentrated hydrochloric acid. Add clean water and concentrated hydrochloric acid in a ratio of 3:1 and mix, stir for about 15 minutes, clean the oxides on the surface of the raw material, pour off the cleaning solution, add distilled water to clean the raw material again, and pour off the distilled water.

[0048] Step 2: Pour the raw materials into the copper crucible of the electric arc melting furnace. Put the elemental Zr into the copper crucible, number them sequentially, and close the furnace chamber. The electric arc furnace is cooled by a circulating water cooling system. Before smelting, use a mechanical pump to evacuate to below 9Pa, and then use a molecular pump to continue evacuating to 5×10 -5 Pa, turn off the molecular pump, fill with argon to 0.6 atmosphere. S...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
magnetostrictionaaaaaaaaaa
Login to view more

Abstract

The invention provides a room temperature magnetostrictive material and a preparation method thereof, the molecular formula is Mn 1‑x Ni x CoSi, the value range of x is 0.02≤x≤0.03. During the preparation process, each raw material is also weighed according to the stoichiometric ratio Mn:Ni:Co:Si=(1-x):x:1:1, and the value range of x is also 0.02≤x≤0.03. After mixing the raw materials evenly The prepared raw materials will also be cleaned, smelted, sealed, strong magnetic field annealed, post-annealed and sample taken in sequence. Among them, the raw materials are also cleaned by hydrochloric acid solution, and the arc melting furnace is pre-cleaned by elemental Zr before smelting. Oxygen step, alloy ingot crushed vacuum seal also adopts double-layer quartz glass tube. The room temperature magnetostrictive material prepared by the invention is annealed in a high temperature and strong magnetic field to form a textured and dense alloy sample.

Description

technical field [0001] The invention belongs to the field of functional materials, and in particular relates to a room temperature magnetostrictive material and a preparation method thereof. Background technique [0002] Magnetostrictive materials will change in size under the action of a magnetic field, and will repeatedly elongate and compress, resulting in vibration or sound waves, causing the mutual conversion of electromagnetic energy-mechanical energy-acoustic energy. Magnetic multifunctional materials that convert information and information. It has great application value in engineering fields such as shock absorption and anti-vibration, ocean detection and development technology, military sonar, intelligent wing, automation technology, linear motor, micro displacement drive, micro vibrator and micro sensor. Famous magnetostrictive material-rare earth-transition alloy Tb 0.3 D. y0.7 Fe 2 (Terfenol-D), under 1T magnetic field, obtained a large magnetostriction of ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): C22C30/00C22C1/02C22F1/00
CPCC22C1/02C22C30/00C22F1/00
Inventor 胡秋波唐春娟苏剑峰陈林峰郭向阳朱卫利安秀云张永胜
Owner LUOYANG INST OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap