A method of 3D printing magnetic ceramics and magnetic ceramics prepared therefrom

A magnetic ceramic and 3D printing technology, applied in the field of 3D printing ceramics, can solve problems such as magnetic difference, improve anisotropy, reduce R&D cycle and cost, and facilitate industrial application.

Active Publication Date: 2020-05-01
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] For this reason, the technical problem to be solved by the present invention is to provide a method for 3D printing magnetic ceramics to solve the problem of poor magnetic properties of magnetic ceramic products produced by 3D printing processes in the prior art;

Method used

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  • A method of 3D printing magnetic ceramics and magnetic ceramics prepared therefrom
  • A method of 3D printing magnetic ceramics and magnetic ceramics prepared therefrom
  • A method of 3D printing magnetic ceramics and magnetic ceramics prepared therefrom

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Such as figure 1 As shown, the 3D printing BaFe described in this embodiment 12 o 19 The method for ceramic materials specifically comprises the steps of:

[0038] (1) Weigh 50g BaFe12 o 19 Precursor powder (BaCO 3 with Fe 2 o 3 The molar ratio of the precursor powder is 1:6), and the precursor powder is put into the zirconia ball milling jar, the mass ratio of the precursor powder and the zirconia ball in the ball milling jar is controlled to be 1:10, the speed of the ball mill is controlled to be 300rpm, and the ball milling time is 4h;

[0039] Disperse the ceramic precursor particles obtained after ball milling in polyvinyl alcohol aqueous solution (12.0wt%), stir evenly, and contain polyethylene glycol (8.0wt%) and a small amount of lauryl ether (0.8wt%) in the aqueous solution at the same time , controlling the volume content of the ceramic precursor particles in the polyvinyl alcohol aqueous solution to be 35vol%, to obtain a ceramic slurry;

[0040] (2) ...

Embodiment 2

[0044] The method for 3D printing ceramic materials described in this embodiment is the same as in Example 1, the only difference being that the ceramic powder used is SrCO 3 and Fe 2 o 3 (molar ratio is 1:6), for the preparation of SrFe 12 o 19 Ceramic material.

[0045] After measurement, the coercive force H of the magnetic ceramic material obtained in this embodiment c It can reach 4.85kOe, and the sintered density can reach 4.64g / cm 3 , after calculating the maximum magnetic energy product density (BH) max Reaching 2.51MGOe, the magnetic properties are superior.

Embodiment 3

[0047] Such as figure 1 As shown, the 3D printing BaFe described in this embodiment 12 o 19 The method for ceramic materials specifically comprises the steps of:

[0048] (1) Weigh 50g BaFe 12 o 19 Precursor powder (BaCO 3 with Fe 2 o 3 The molar ratio of the precursor powder is 1:6), and the precursor powder is put into the zirconia ball mill jar, the mass ratio of the precursor powder and the zirconia ball in the ball mill jar is controlled to be 1:5, the speed of the ball mill is controlled to 400rpm, and the milling time is 10h;

[0049] The ceramic precursor particle that obtains after ball milling is dispersed in the methyl cellulose aqueous solution (10.0wt%), stirs evenly, contains polyethylene glycol (6.0wt%) and a small amount of dodecyl ether (1.0wt%) simultaneously in the aqueous solution ), controlling the volume content of the ceramic precursor particles in the polyvinyl alcohol aqueous solution to be 25vol%, to obtain a ceramic slurry;

[0050] (2) Tran...

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Abstract

The invention belongs to the technical field of 3D printing ceramics, particularly relates to a magnetic ceramic 3D printing method, and further discloses a magnetic ceramic prepared through the magnetic ceramic 3D printing method. The magnetic ceramic 3D printing method, cheap precursor particle powder is used as the raw material, ball milling is conducted on the precursor powder so that the particles are more uniform, the precursor powder after ball milling is firstly used for 3D printing magnetic ceramics, the thorough solid phase reaction and high sintering performance are effectively ensured, and anisotropy can be improved; and furthermore, uniform slurry capable of being continuously extruded through preparation is used for a rapid molding 3D printing process so as to prepare ceramicmaterials with various customized shapes, the net molding of the ceramic materials is achieved, no waste generation is achieved, the design degree of freedom is achieved, meanwhile, the performance of the material is optimized and improved through post-treatment, and the magnetic ceramic 3D printing method is suitable for industrial production of high-performance magnetic ceramics with various complex shapes.

Description

technical field [0001] The invention belongs to the technical field of 3D printing ceramics, in particular to a method for 3D printing magnetic ceramics, and further discloses the magnetic ceramics prepared by the method. Background technique [0002] Magnetic materials usually refer to substances that can directly or indirectly generate magnetism from transition elements such as iron, cobalt, nickel and their alloys. They are functional materials with a wide range of uses. Modern magnetic materials have been widely used in our lives. For example, permanent magnet materials are used as motors, core materials used in transformers, magneto-optical disks used as memories, and magnetic recording floppy disks for computers. It is closely related to all aspects of automation, automation, mechatronics, national defense and national economy. [0003] Magnetic materials can be divided into soft magnetic materials and hard magnetic materials according to the difficulty of demagnetiza...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B28B1/00B33Y10/00C04B35/626
CPCH01F1/11
Inventor 魏相霞刘银华赵东杰毛雪伟葛树志
Owner QINGDAO UNIV
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