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Method for preparing yttrium iron garnet ferrite material

A ferrite material, yttrium iron garnet technology, applied in the field of preparation of microwave ferrite materials, can solve the problems of time-consuming and energy consumption, and achieve the effect of low magnetoelectric loss and excellent magnetic properties

Inactive Publication Date: 2008-06-18
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
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Problems solved by technology

[0003] In the prior art, the preparation of yttrium iron garnet gyromagnetic ferrite material is mainly the conventional resistance furnace sintering method, that is, the solid phase reaction sintering method. Drying-granulation-forming-sintering, this method is time-consuming and energy-consuming

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  • Method for preparing yttrium iron garnet ferrite material
  • Method for preparing yttrium iron garnet ferrite material
  • Method for preparing yttrium iron garnet ferrite material

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Embodiment Construction

[0030] The microwave sintered yttrium-iron-garnet ferromagnetic ferrite material proposed by the present invention has its process equipment as shown in Figure 2. The NL75 microwave sintering furnace is used to crystallize the material. The device includes an infrared temperature measuring hole 1 and a quartz crucible 2 with a cover. , material to be fired 3, silicon carbide powder 4, corundum crucible 5, microwave oven outer cavity 6, refractory brick 7.

[0031] A microwave sintered yttrium iron garnet microwave ferrite material provided by the present invention is mainly made by the following five steps:

[0032] Step 1: Ingredients

[0033] Use analytically pure Fe with a purity of 99.99% 2 o 3 and analytically pure Y with a purity of 99.99% 2 o 3 As a raw material, according to the chemical formula of pure yttrium iron garnet (Y 3 Fe 5 o 12 ) to calculate the required ratio of raw materials.

[0034] For example: the required yttrium iron garnet ferrite material i...

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Abstract

The invention relates to yttrium iron garnet ferrite preparation method, belonging to a field of electronic material. The invention comprises the following steps: 1 the proportion of the required materials Fe2O3 and Y2O3 is calculated according to the chemical formula Y3Fe5O12; 2. According to the proportion calculated in the step 1, the Fe2O3 and Y2O3 are mixed and milled; 3. Drying and crushing; 4, the dried and crushed powder is sintered by microwave; 5. Granulation; 6. Pressing formation. The invention has the advantages of: 1. Density structure; 2. excellent magnetic energy; 3 large dielectric constant and small dielectric loss; 4. Small electromagnetic loss.

Description

technical field [0001] The invention relates to the field of electronic materials, in particular to the preparation technology of microwave ferrite materials. Background technique [0002] Microwave heating is a heating method for heating materials as a whole. It has the characteristics of high efficiency, energy saving, and no pollution. Now it is getting more and more attention. Although microwave sintering technology is still immature and imperfect, it has advantages that conventional technologies cannot match: First, as a time-saving, energy-saving, labor-saving, and pollution-free technology, microwave sintering can meet the needs of today's energy-saving The requirements of energy and environmental protection; secondly, its activated sintering characteristics are conducive to obtaining excellent microstructures, thereby improving material performance; thirdly, the characteristics of microwave and material coupling determine that microwaves can be used for selective hea...

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Application Information

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IPC IPC(8): C04B35/26C04B35/622
Inventor 杨青慧张怀武文岐业刘颖力李元勋张朝坤
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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