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Yellow-green mechanoluminescence ceramic material and preparation method thereof

A ceramic material and luminescent technology, applied in the field of ceramics, can solve problems such as weak luminous intensity and difficulty in low-light detection, achieve high compressive strength and enhance the effect of luminescence

Active Publication Date: 2018-02-27
赣州中蓝稀土新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome a series of problems such as the weak luminous intensity of the mechanoluminescent material in the prior art and the difficulty in low-light detection, the present invention provides a yellow-green mechanoluminescent ceramic material and a preparation method thereof. The ceramic has compressive strength High, obvious mechanoluminescent effect, etc., can be used for pressure sensing components in pressure sensors

Method used

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  • Yellow-green mechanoluminescence ceramic material and preparation method thereof

Examples

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Embodiment 1

[0125] A yellow-green mechanoluminescent ceramic material with a chemical composition of Sr 1.98 Si 7 o 4 N 8 : 0.01Eu 2+ , 0.01Gd 3+ .

[0126] With high purity SrCO 3 , SiO 2 、Si 3 N 4 、Eu 2 o 3 and Gd 2 o 3 As a raw material, according to the chemical composition general formula Sr 1.98 Si 7 o 4 N 8 : 0.01Eu 2+ , 0.01Gd 3+ The ratio of each element in the formula is accurately weighed raw materials; agate balls are used as grinding balls, absolute ethanol is used as a ball milling medium, agate balls, absolute ethanol and raw materials are put into a ball milling tank at the same time, and ball milling is carried out on a planetary ball mill. feed for 10 hours to form a slurry-like mixture, the mass ratio of the absolute ethanol to the raw material is 2:3; the obtained slurry-like mixture is placed in an oven, and dried for 4 hours at 80 ° C, and then The raw materials obtained after drying are passed through a 200-mesh sieve to obtain uniformly mixed raw...

Embodiment 2

[0128] A yellow-green mechanoluminescent ceramic material with a chemical composition of Sr 1.96 Si 7 o 4 N 8 : 0.02Eu 2+ , 0.02Lu 3+ .

[0129] With high purity SrCO 3 , SiO 2 、Si 3 N 4 、Eu 2 o 3 and Lu 2 o 3 As a raw material, according to the chemical composition general formula Sr 1.96 Si 7 o 4 N 8 : 0.02Eu 2+ , 0.02Lu 3+ The ratio of each element in the formula is accurately weighed raw materials; agate balls are used as grinding balls, absolute ethanol is used as a ball milling medium, agate balls, absolute ethanol and raw materials are put into a ball milling tank at the same time, and ball milling is carried out on a planetary ball mill. feed for 5 hours to form a slurry-like mixture, the mass ratio of the absolute ethanol to the raw material is 2:3; the obtained slurry-like mixture is placed in an oven, and dried for 6 hours at 80 ° C, and then The raw materials obtained after drying are passed through a 200-mesh sieve to obtain uniformly mixed raw ...

Embodiment 3

[0131] A yellow-green mechanoluminescent ceramic material with a chemical composition of Sr 1.92 Si 7 o 4 N 8 : 0.04Eu 2+ , 0.02Gd 3+ ,0.02Lu 3+ .

[0132] With high purity SrCO 3 , SiO 2 、Si 3 N 4 、Eu 2 o 3 、Gd 2 o 3 and Lu 2 o 3 As a raw material, according to the chemical composition general formula Sr 1.92 Si 7 o 4 N 8 : 0.04Eu 2+ , 0.02Gd 3+ , 0.02Lu 3+ The ratio of each element in the formula is accurately weighed raw materials; agate balls are used as grinding balls, absolute ethanol is used as a ball milling medium, agate balls, absolute ethanol and raw materials are put into a ball milling tank at the same time, and ball milling is carried out on a planetary ball mill. Feed for 15 hours to form a slurry mixture, the mass ratio of the absolute ethanol to the raw material is 2:3; the obtained slurry mixture is placed in an oven, and dried for 5 hours at 80°C, and then The raw materials obtained after drying are passed through a 200-mesh sieve to o...

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Abstract

The invention discloses a yellow-green mechanoluminescence ceramic material and a preparation method thereof, aims to provide a pressure sensing material with mechanoluminescence performance and belongs to the technical field of ceramic. The chemical composition general formula of the ceramic is Sr2-x-ySi7O4N8:xEu<2+>,yRe<3+>, wherein Re is selected from one or combination of two of Gd and Lu; thevalue range of x is greater than or equal to 0.01 and is less than or equal to 0.1; the value range of y is greater than or equal to 0.01 and is less than or equal to 0.2. The luminescence center ofthe ceramic is Eu<2+> ion; rare earth impurity ions such as Gd<3+> and Lu<3+> and the like are introduced into the ceramic, so that the mechanoluminescence effect of the ceramic can be effectively improved. The ceramic has the characteristics of high compressive strength and obvious mechanoluminescence effect and can be applied to pressure sensing parts of pressure sensors.

Description

technical field [0001] The invention belongs to the technical field of ceramics, in particular to a yellow-green electroluminescent ceramic material and a preparation method thereof. Background technique [0002] Mechanoluminescence is a special luminescent phenomenon. Unlike photoluminescence, electron beam-excited cathode ray luminescence, electrically excited electroluminescence, and thermally excited thermoluminescence, mechanoluminescence does not require a special external excitation source. , only needs to be stretched, impacted, rubbed, compressed, etc. to emit light signals. In the past few decades, the mechanoluminescence phenomenon of materials has not been practically applied, because the mechanoluminescence phenomenon of ordinary materials is very weak and lasts for a short time, which is difficult to be captured by detection instruments. In recent years, scientists have successively discovered a variety of materials with high-efficiency luminescence properties...

Claims

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Application Information

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IPC IPC(8): C04B35/597C04B35/622
CPCC04B35/597C04B35/622C04B2235/3213C04B2235/3224C04B2235/3418C04B2235/3873C04B2235/46C04B2235/6562C04B2235/6567C04B2235/6582C04B2235/9646
Inventor 杨道救
Owner 赣州中蓝稀土新材料科技有限公司
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