Spinel ceramic material with infrared radiation function and preparation method of spinel ceramic material

A spinel-type, infrared radiation technology is applied in the field of infrared radiation to achieve the effects of stable structure, improved infrared radiation performance, and excellent infrared radiation performance

Inactive Publication Date: 2015-01-21
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although scholars at home and abroad have invented infrared radiation materials with excellent performance, MgFe 2 o 4 based system does not involve

Method used

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  • Spinel ceramic material with infrared radiation function and preparation method of spinel ceramic material
  • Spinel ceramic material with infrared radiation function and preparation method of spinel ceramic material
  • Spinel ceramic material with infrared radiation function and preparation method of spinel ceramic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The preparation method of infrared radiation ceramics adopts the conventional solid-phase sintering method, and the process flow is as follows: batching→ball milling→drying→grinding→pre-firing→secondary ball milling→drying→grinding→sieving→granulation→pressing→firing→testing .

[0029] Concrete preparation process steps are as follows:

[0030] (1) The chemically pure powder is formulated according to the amount of 62% Fe 2 o 3 , 7%Ni 2 o 3 , 25% MgO, 6% Gd 2 o 3 Weigh various oxides of corresponding mass and place them in a ball mill jar with a ball-to-material ratio of 3:1, add an appropriate amount of deionized water and ball mill for 6 hours.

[0031] (2) Dry the mixture obtained in (1) at 80°C, grind it and place it in a high-temperature furnace for pre-calcination at 1000°C for 6 hours.

[0032] (3) Put the mixture obtained in (2) into the ball mill tank again, the ball-to-material ratio is 3:1, and add an appropriate amount of deionized water to ball mill ...

Embodiment 2

[0037] The preparation method of infrared radiation ceramics adopts the conventional solid-phase sintering method, and the process flow is as follows: batching→ball milling→drying→grinding→pre-firing→secondary ball milling→drying→grinding→sieving→granulation→pressing→firing→testing .

[0038] Concrete preparation process steps are as follows:

[0039] (1) The chemically pure powder is formulated according to the amount of 72% Fe 2 o 3 , 6%Co 2 o 3 , 22% MgO, 2% La 2 o 3 Weigh the corresponding mass parts of various oxides and place them in a ball mill jar with a ball-to-material ratio of 3:1, add an appropriate amount of deionized water and ball mill for 8 hours.

[0040] (2) Dry the mixture obtained in (1) at 90°C, grind it, and place it in a high-temperature furnace for pre-calcination at 1000°C for 8 hours.

[0041] (3) Put the mixture obtained in (2) into the ball mill tank again, the ball-to-material ratio is 3:1, and add an appropriate amount of deionized water to...

Embodiment 3

[0046] The preparation method of infrared radiation ceramics adopts the conventional solid-phase sintering method, and the process flow is as follows: batching→ball milling→drying→grinding→pre-firing→secondary ball milling→drying→grinding→sieving→granulation→pressing→firing→testing .

[0047] Concrete preparation process steps are as follows:

[0048] (1) The chemically pure powder is formulated with 83% Fe 2 o 3 , 5% MnO 2 , 12% MgO Weigh the corresponding mass parts of various oxides and place them in a ball mill tank with a ball-to-material ratio of 3:1, add an appropriate amount of deionized water and ball mill for 10 h.

[0049] (2) Dry the mixture obtained in (1) at 100°C, grind it, and place it in a high-temperature furnace for pre-calcination at 1000°C for 9 hours.

[0050] (3) Put the mixture obtained in (2) into the ball mill tank again, the ball-to-material ratio is 3:1, and add an appropriate amount of deionized water to ball mill for 10 hours.

[0051] (4) Dr...

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Abstract

The invention provides a spinel ceramic material with an infrared radiation function and a preparation method of the spinel ceramic material. The material comprises the following raw materials in percentage by mass: 62%-83% of Fe2O3, 5%-22% of a transition metal oxide A, 12%-33% of MgO, and 0%-10% of a rare-earth oxide B, wherein the transition metal oxide A is one or a mixture of more of Ni2O3, Co2O3 and MnO2; and the rare-earth oxide B is one or a mixture of Gd2O3, La2O3, Sm2O3, Y2O3, Pr6O11 and Dy2O3. The preparation method comprises the following steps: putting the Fe2O3, the transition metal oxide A, the MgO and the rare-earth oxide B into a ball milling jar, adding deionized water and carrying out ball-milling treatment; drying and pre-sintering; and then carrying out ball-milling treatment, secondary drying and ball milling, sieving, tabletting and calcining. The infrared radiation ceramic prepared by the method is stable in structure, and compared with other infrared radiation materials, the infrared radiation property at a waveband of 3-5 microns is excellent.

Description

technical field [0001] The invention belongs to the field of infrared radiation, in particular to a spinel ceramic material with infrared radiation function and a preparation method thereof. Background technique [0002] The discovery of light-emitting diodes (LEDs) is a major milestone in human science and technology. Under the trend of environmental protection and energy saving, countries around the world are actively bringing high-efficiency and energy-saving LEDs into the lighting market with broad applications. With the development of LEDs in the direction of high power, high light intensity, and small size, the heat dissipation problem of LEDs has become increasingly prominent. The heat dissipation problem of LED lies in the high power density of the chip. At present, 80%-90% of the input power of the LED is converted into heat. If the heat is not discharged in time, it will cause obvious LED light decay and seriously affect the light efficiency and life of the LED. a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/26C04B35/622
Inventor 丁锡锋王俊
Owner NANJING UNIV OF SCI & TECH
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