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Preparation method and application of terbium ion activated phosphate luminescent ceramic

A phosphate, ion technology, applied in luminescent materials, fluorescence/phosphorescence, material excitation analysis, etc., can solve the problem of subsurface existence of the order of 10 microns to 60 microns, damage and other problems

Pending Publication Date: 2021-06-08
DANYU TECH JIANGSU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its defects will be produced during its preparation and use. When there are defects on the order of 10 microns to 60 microns on the surface or sub-surface, it can lead to damage during the working process.

Method used

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  • Preparation method and application of terbium ion activated phosphate luminescent ceramic
  • Preparation method and application of terbium ion activated phosphate luminescent ceramic
  • Preparation method and application of terbium ion activated phosphate luminescent ceramic

Examples

Experimental program
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Embodiment 1

[0034] Embodiment 1: prepare NaSrLa 0.93 Tb 0.07 (PO 4 ) 2

[0035] (1) According to the general chemical formula NaSrLa 0.93 Tb 0.07 (PO 4 ) 2 The stoichiometric ratio of each element in the formula is weighed as strontium chloride SrCl 2 1.59 g, terbium chloride TbCl 3 0.1857 g, sodium chloride NaCl 0.5845 g, phosphoric acid H 3 PO 4 1.96 grams, terbium chloride was added in dilute nitric acid solution, stirred until completely dissolved to obtain solution A; strontium chloride, sodium chloride and phosphoric acid were added to dilute nitric acid solution, stirred until completely dissolved to obtain mixed solution B;

[0036] (2) According to the general chemical formula NaSrLa 0.93 Tb 0.07 (PO 4 ) 2 The stoichiometric ratio of the La element in the medium is weighed as lanthanum oxide La 2 o 3 1.515 grams, lanthanum chloride is dissolved in dilute nitric acid, obtains solution C;

[0037] (3) Add the mixed solution B and the solution C to the solution A...

Embodiment 2

[0047] Embodiment 2: Preparation of NaSrLa 0.985 Tb 0.015 (PO 4 ) 2

[0048] (1) According to the general chemical formula NaSrLa 0.985 Tb 0.015 (PO 4 ) in the stoichiometric ratio of each element, respectively weigh strontium nitrate Sr (NO 3 ) 2 2.116 g, terbium nitrate Tb (NO 3 ) 3 0.052 g, sodium nitrate NaNO 3 0.85 g, phosphorus pentoxide P 2 o 5 1.419 grams, terbium nitrate was added in dilute nitric acid solution, stirred until completely dissolved to obtain solution A; strontium nitrate, sodium nitrate and phosphorus pentoxide were added in dilute nitric acid solution, stirred until completely dissolved to obtain mixed solution B;

[0049] (2) According to the general chemical formula NaSrLa 0.985 Tb 0.015 (PO 4 ) 2 The stoichiometric ratio of the La element in the medium, weighed lanthanum chloride LaCl 3 2.416 grams, lanthanum chloride is dissolved in dilute nitric acid, obtains solution C;

[0050] (3) Add the mixed solution B and the solution ...

Embodiment 3

[0055] Embodiment 3: preparation NaSrLa 0.85 Tb 0.15 (PO 4 ) 2

[0056] (1) According to the general chemical formula NaSrLa 0.85 Tb 0.15 (PO 4 ) 2 The stoichiometric ratio of each element in is weighed respectively as strontium oxalate SrC 2 o 4 : 1.757 grams, terbium nitrate Tb (NO 3 ) 3 : 1.0348 g, sodium acetate CH 3 COONa: 0.8215 g, phosphorus pentachloride PCl 5 : 4.1848 grams, adding terbium nitrate in dilute nitric acid solution, stirring until completely dissolved, to obtain solution A; adding strontium oxalate, sodium acetate and phosphorus pentachloride in dilute nitric acid solution, stirring until completely dissolving, obtaining mixed solution B;

[0057] (2) According to the general chemical formula NaSrLa 0.985 Tb 0.015 (PO 4 ) 2 The stoichiometric ratio of the La element in the medium is taken by weighing lanthanum hydroxide La(OH) 3 1.8705 grams, lanthanum hydroxide is dissolved in dilute nitric acid, obtains solution C;

[0058] (3) Add th...

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Abstract

The invention discloses a preparation method and application of terbium ion activated phosphate optical engineering ceramic, and belongs to the technical field of optical engineering ceramic. The general chemical formula of the optical engineering ceramic is NaSrLa1-xTbx (PO4)2, a matrix is phosphate, the x is the doping molar ratio of activating agent Tb<3+> ions, and the x is larger than or equal to 0.015 and smaller than or equal to 0.3. The preparation method of the optical engineering ceramic comprises the following steps: firstly, preparing ceramic powder by adopting a chemical sol-gel method, then, carrying out net size forming on the ceramic powder by adopting dry pressing and isostatic pressing methods, and finally, carrying out solid-phase sintering to obtain the final optical engineering ceramic. The obtained optical engineering ceramic emits green light of about 545 nanometers under excitation of near ultraviolet light, and can be used for manufacturing white light LED devices excited by near ultraviolet chips or used for nondestructive optical detection of engineering ceramic defects. The phosphate optical engineering ceramic is simple to prepare and low in production cost.

Description

technical field [0001] The invention relates to the field of inorganic luminescent ceramic materials, in particular to a preparation method and application of terbium ion-activated phosphate luminescent ceramics. Background technique [0002] Light-emitting diode (LED) is an energy conversion device that can convert electrical energy into light energy. It is the fourth generation of green and environmentally friendly lighting sources after incandescent lamps, fluorescent lamps, and high-intensity discharge lamps. At present, there are many kinds of white light LED packaging methods at home and abroad. Among them, in the "blue chip + phosphor" packaging process, the adhesive used in this packaging process is epoxy resin; but with the brightness and power of white light LED The continuous improvement of LED packaging materials puts forward higher requirements, and the defects of epoxy resin itself such as hygroscopicity, easy aging, poor heat resistance, high temperature and e...

Claims

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Application Information

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IPC IPC(8): C04B35/447C04B35/622C04B35/624C09K11/81G01N21/64
CPCC04B35/447C04B35/622C04B35/624C09K11/7778G01N21/6428G01N2021/6439C04B2235/3201C04B2235/3213C04B2235/3227C04B2235/3224C04B2235/9646Y02B20/00
Inventor 李刚乔学斌
Owner DANYU TECH JIANGSU CO LTD