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Rapid aging device

A technology of rapid aging and equipment, applied in the direction of material excitation analysis, fluorescence/phosphorescence, etc., can solve problems such as long time, and achieve the effect of simple equipment structure, improved efficiency, and low manufacturing cost

Active Publication Date: 2015-03-18
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the chemical properties of nitride phosphors are more stable than those of oxides, it will take longer for nitride phosphors to be aged in a double 85 aging box.

Method used

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Examples

Experimental program
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Effect test

reference example 1

[0031] Take a certain quality of CaAlSiN produced by manufacturer 1 3 :Eu 2+ Phosphor powder was vacuum dried in a vacuum oven for 1 hour at a drying temperature of 100°C. Put the dried and cooled samples into a quartz crucible and put them into a double 85 aging box for aging. The aging conditions are 85% humidity, 85°C, and the aging time is 3000 hours and 6000 hours respectively. After aging, the sample cooled to room temperature was taken out, and placed in a vacuum oven for 6 hours to vacuum dry at 60°C; after the sample was cooled, the sample cooled to room temperature was taken out. The relative intensity values ​​of the emission spectra of the phosphor powder before and after aging were tested respectively. The excitation wavelength is 450nm, the accelerating voltage is 700V, the test scanning speed is 240nm / min, and the excitation and emission slits are both 0.2nm.

reference example 2

[0033] Take a certain quality of CaAlSiN produced by manufacturer 2 3 :Eu 2+ Phosphor powder was vacuum dried in a vacuum oven for 1 hour at a drying temperature of 100°C. Put the dried and cooled samples into a quartz crucible and put them into a double 85 aging box for aging. The aging conditions are 85% humidity, 85°C, and the aging time is 3000 hours and 6000 hours respectively. After aging, the sample cooled to room temperature was taken out, and placed in a vacuum oven for 6 hours to vacuum dry at 60°C; after the sample was cooled, the sample cooled to room temperature was taken out. The relative intensity values ​​of the emission spectra of the phosphor powder before and after aging were tested respectively. The excitation wavelength is 450nm, the accelerating voltage is 700V, the test scanning speed is 240nm / min, and the excitation and emission slits are both 0.2nm.

Embodiment 1

[0035] Take a certain quality of CaAlSiN produced by manufacturer 1 3 :Eu 2+ Phosphor powder was dried in a vacuum oven for 1 hour at a drying temperature of 100°C. Put the dried and cooled sample into a quartz crucible and put it into the fixture 416. The volume of the tank body 420 is 300ml, and the volume of deionized water added is 30ml. The aging conditions were humidity 100%, temperature 210°C, pressure 1.9 MPa, and aging time were 2 hours and 5 hours, respectively. After aging, the sample cooled to room temperature was taken out, and placed in a vacuum oven for 6 hours to be vacuum-dried at 60° C.; the sample cooled to room temperature after drying was taken out. The relative intensity values ​​of the emission spectra of the phosphor powder before and after aging were tested respectively. The excitation wavelength during the test is 450nm, the accelerating voltage is 700V, the test scanning speed is 240nm / min, and the excitation and emission slits are both 0.2nm.

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Abstract

The invention provides a rapid aging device. The rapid aging device comprises a controller, a temperature sensor, a pressure sensor, a tank body, a top cover and a heating device, wherein liquid is filled in the tank body, and the top cover is mounted on the tank body and forms a sealed tank having an internal cavity with the tank body; the controller is mounted outside the sealed tank and connected with the temperature sensor, the pressure sensor and the heating device respectively; the temperature sensor and the pressure sensor are mounted in the sealed tank respectively and positioned above the liquid; and the heating device is used for heating the sealed tank. The rapid aging device provided by the invention can rapidly increase temperature and pressure in the sealed tank to obtain relatively high temperature and pressure; when a sample to be aged is in such an environment, the aging speed is increased and the efficiency is improved; and simultaneously, the device has simple structure and low manufacturing cost.

Description

technical field [0001] The invention relates to the field of aging equipment, in particular to a rapid aging equipment. Background technique [0002] In the field of luminescent materials, it is often necessary to age the phosphor powder to test the aging resistance of the phosphor powder. The double 85 damp heat aging box can provide aging conditions with a relative humidity of 85% and a temperature of 85°C, which is commonly used equipment in phosphor aging experiments. Under this condition, the oxide phosphor needs at least 1000 hours to age to a more obvious degree. Since the chemical properties of nitride phosphors are more stable than those of oxides, it takes longer time for nitride phosphors to be aged in a double 85 aging box. Contents of the invention [0003] The invention provides a rapid aging device, which reduces the time required for the aging of the nitride fluorescent powder. [0004] In order to achieve the above object, the embodiment of the present ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/64
Inventor 解荣军周天亮
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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