Temperature-graded magnetic heating material and preparation method thereof

A technology of magnetocaloric materials and phase transition temperature, which is applied in metal material coating process, ion implantation plating, coating, etc., can solve the problems of narrow working temperature range, difficulty in ensuring high magnetic refrigeration performance and efficiency of materials, and achieve Improve the magneto-caloric effect, expand the working temperature area, and reduce the cost

Active Publication Date: 2019-06-21
上海利鑫生物科技有限公司
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the optimum working temperature range of Mn-based magnetocaloric materials is generally narrow, and the temperature span usually does not exceed 10K. Even for ordinary household refrigerators, the working temperature range is between 30K. Refrigeration materials can't meet the demand for refrigeration effect in our production and life at all, and in practical applications, it is more difficult to ensure the high magnetic refrigeration performance and efficiency of materials in complex use environments

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
  • Temperature-graded magnetic heating material and preparation method thereof
  • Temperature-graded magnetic heating material and preparation method thereof
  • Temperature-graded magnetic heating material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: step 1): with SiO 2 The substrate was ultrasonically cleaned with acetone, absolute ethanol and deionized water for 5 minutes each, and then dried with nitrogen gas for later use. With Ni 50 mn 37 sn 13 The alloy is used as the target material, and the radio frequency magnetron sputtering technology is used on SiO 2 15 μm thick Ni was prepared on the substrate 50 mn 37 sn 13 film. The alloy target for sputtering is a cylindrical target with a diameter of 60 mm and a thickness of 2-3 mm, and the distance from the target to the substrate is 70 mm. During the sputtering process, the substrate was rotated at a speed of 10rpm to ensure the uniformity of the sample. The sputtering gas was high-purity argon (99.999%), the working pressure was 0.5Pa, and the sputtering power was 150W.

[0020] Step 2): Take out Ni 50 mn 37 sn 13 Thin film sample, put it into a quartz glass tube to vacuum, the vacuum degree is less than 10 -3 Pa. Put the quartz glass t...

Embodiment 2

[0024] This embodiment is compared with embodiment one, except Ni 50 mn 37 sn 13 / Ni 50 mn 35 In 15 Except that the thickness ratio of the two components in the structure is 30 μm:30 μm, other steps are the same as in Example 1.

Embodiment 3

[0026] This embodiment is compared with embodiment one, except Ni 50 mn 37 sn 13 / Ni 50 mn 35 In 15 Except that the thickness ratio of the two components in the structure is 45 μm:15 μm, other steps are the same as in Example 1.

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
phase transition temperatureaaaaaaaaaa
phase transition temperatureaaaaaaaaaa
Login to view more

Abstract

The invention belongs to the field of magnetic refrigeration, and particularly relates to a temperature-graded magnetic heating material and a preparation method thereof. The temperature-graded magnetic heating material comprises a Ni50Mn37Sn13 alloy film layer and a Ni50Mn35In15 alloy film layer. The phase change temperature of the Ni50Mn37Sn13 alloy film layer ranges from 295 K to 305 K. The phase change temperature of the Ni50Mn35In15 alloy film layer ranges from 301 K to 310 K. The thickness ratio of the Ni50Mn37Sn13 alloy film layer to the Ni50Mn35In15 alloy film layer is 1:3 to 3:1. According to the temperature-graded magnetic heating material and the preparation method thereof, by carrying out gradient design and preparation on the magnetic heating material, the work temperature zone of an existing magnetic heating material can be expanded, and the magnetic heating effect of the material can be improved; and a design rule and a regulating and control mechanism of the magnetic heating material are set up, and the gradient magnetic heating temperature material is pushed to develop towards application.

Description

technical field [0001] The invention belongs to the field of magnetic refrigeration, and in particular relates to a temperature gradient magnetocaloric material and a preparation method thereof. Background technique [0002] In recent years, people pay more and more attention to environmental protection and efficient use of energy. The magnetic refrigeration technology developed based on the magnetocaloric effect of materials is a technology with important application prospects that has attracted widespread attention at home and abroad. Compared with traditional gas compression refrigeration technology, magnetic refrigeration technology has many advantages such as environmental protection, high efficiency and energy saving, stability and reliability, and is widely used in various fields of production and life. Magnetic refrigeration materials mainly include binary rare earth-based intermetallic compounds (RGa, RNi, RZn, RSi, R 3 Co and R 12 co 7 ), rare earth-transition ...

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 Applications(China)
IPC IPC(8): C23C14/18C23C14/35C23C14/58C22C30/00
Inventor 郭振刚李慧王誉洪王森
Owner 上海利鑫生物科技有限公司
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