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Manufacturing method of high-power yttrium/gadolinium garnet ferrite material

A technology of ferrite material and manufacturing method, which is applied in the field of microwave technology and magnetic materials, and can solve the problems of high power capacity, low capacity and large loss

Inactive Publication Date: 2013-05-22
东阳富仕特磁业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention mainly aims to provide a high-power and low-loss garnet microwave containing copper and titanium for the existing high-power yttrium-gadolinium-calcium-vanadium garnet ferrite materials, which have relatively large loss and relatively low high-power capacity. Formula of ferrite material and its manufacturing method for industrialized production

Method used

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  • Manufacturing method of high-power yttrium/gadolinium garnet ferrite material
  • Manufacturing method of high-power yttrium/gadolinium garnet ferrite material
  • Manufacturing method of high-power yttrium/gadolinium garnet ferrite material

Examples

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Effect test

example 1

[0030] ① According to chemical formula

[0031] Y 3-y-2z-p+x-q-q′ Gd y Ca 2z+p-x+q+q′ Cu x V z Ge p sn q Ti q′ In q″ al w mn w′ Fe 5-x-z-p-q-q′-w-w′-δ o 12

[0032] Take: x=0.05;y=1.00;z=0.32;p=0.10;q=0;q′=0.03;q″=0.27;w=0.05;w′=0 to calculate the required raw material. ≥99.9% and Y after burning treatment 2 o 3 , Gd 2 o 3 And analytically pure CuO, Fe 2 o 3 ,CaCO 3 ,V 2 o 5 ,GeO 2 , TiO 2 ,In 2 o 3 ,Al(OH) 3 As the raw material, weigh out the corresponding weight of the raw material. ② Put the weighed raw materials into the ball mill jar, and add steel balls and alcohol according to the ratio of material: ball: alcohol = 1:3:1, and discharge the material after a ball mill for 12 hours. The slurry is dried and passed through a 30-mesh sieve, and put into a special corundum crucible. ③ Put the corundum crucible with the powder into a furnace with an oxidizing atmosphere for pre-firing. The pre-firing temperature is 1200°C and keep warm for 5 hours...

example 2

[0038] ①According to the chemical formula

[0039] Y 3-y-2z-p+x-q-q′ Gd y Ca 2z+p-x+q+q′ Cu x V z Ge p sn q Ti q′ In q″ al w mn w′ Fe 5-x-z-p-q-q′-w-w′-δ o 12

[0040] Take: x=0.05;y=1.20;z=0.26;p=0.10;q=0;q′=0.05;q″=0.30;w=0;w′=0, calculate the required raw materials. Use purity ≥ 99.9% Y after burning treatment 2 o 3 ,Gd 2 o 3 and analytically pure CuO, Fe 2 o 3 ,CaCO 3 ,GeO 2 ,V 2 o 5 ,In 2 o 3 , TiO 2 As the raw material, weigh out the corresponding weight of the raw material. ② Put the weighed raw materials into a ball mill jar, and add steel balls and alcohol according to the ratio of material: balls: alcohol = 1: 3: 1.0, and discharge after 12 hours of ball milling. The slurry was dried and passed through a 30-mesh sieve, and loaded into a corundum crucible. ③Put the corundum crucible with the powder into an air atmosphere furnace for pre-firing at 1200°C and keep it warm for 5 hours. ④ Coarsely crush the calcined material and pass through a...

example 3

[0046] ① According to chemical formula

[0047] Y 3-y-2z-p+x-q-q′ Gd y Ca 2z+p-x+q+q′ Cu x V z Ge p sn q Ti q′ In q″ al w mn w′ Fe 5-x-z-p-q-q′-w-w′-δ o 12 Take: x=0.05;y=1.00;z=0.32;p=0.10;q=0;q′=0.03;q″=0.27;w=0.05;w′=0.04 to calculate the required raw material. ≥99.9% and Y after burning treatment 2 o 3 , Gd 2 o 3 And analytically pure CuO, Fe 2 o 3 , CaCO 3 , V 2 o 5 , GeO 2 , In 2 o 3 , Al(OH) 3 , MnCO 3 As the raw material, weigh out the corresponding weight of the raw material. ② Put the weighed raw materials into the ball mill jar, and add steel balls and alcohol according to the ratio of material: ball: alcohol = 1:3:1, and discharge the material after a ball mill for 12 hours. The slurry is dried and passed through a 30-mesh sieve, and put into a special corundum crucible. ③ Put the corundum crucible with the powder into a furnace with an oxidizing atmosphere for pre-firing. The pre-firing temperature is 1200°C and keep warm for 5 hours....

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Abstract

The invention discloses a manufacturing method of a high-power yttrium / gadolinium garnet ferrite material, which comprises the following steps: 1) calculating the amount of raw materials according to a chemical formula of the composition; 2) burning; 3) weighing all the raw materials, placing the weighed raw materials and burned Y2O3 and Gd2O3 into a ball milling tank, and performing ball milling; 4) drying the raw material pulp, screening, placing in a furnace having an oxidizing atmosphere, and presintering; 5) performing secondary ball milling until the average particle size of the powder is not more than 1.2mu m, and discharging; 6) drying, and granulating; 7) pressing into a required product blank; and 8) sintering at 1000-1550 DEG C, and keeping the temperature for 4-50 hours. According to the invention, a small amount of Cu<2+> substitution is used in the formula design, and the Cu<2+> substitution can achieve the effects of promoting solid-phase reaction, increasing density and lowering sintering temperature, thereby favorably ensuring that the product can achieve a high-density fine-grained microstructure at a low sintering temperature.

Description

technical field [0001] The invention belongs to the field of microwave technology and magnetic materials, and in particular relates to the technology of garnet microwave ferrite materials. Background technique [0002] In the manufacture of high-power microwave ferrite circulators / isolators that withstand high peak power, serious problems such as sharp increase in insertion loss and performance degradation often occur due to high-power nonlinear effects of materials. In the manufacture of continuous wave high-power devices with high average power, the temperature rise caused by material loss often causes the saturation magnetization to decrease, which in turn causes the problem of device frequency drift. The high power handling capability of the material can be controlled by the high power nonlinear effect critical field h c or spin wave linewidth ΔH k to characterize [1] . The requirements of high-power devices for microwave ferrite materials are mainly 1) spin wave lin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/40C04B35/622
Inventor 韩志全王天进张方远
Owner 东阳富仕特磁业有限公司