Near ultraviolet excited white light fluorescent powder and preparation method thereof
A fluorescent powder and near-ultraviolet technology, which is applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems of white light attenuation, achieve the effects of narrow particle size distribution, uniform particles, and lower reaction sintering temperature
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0012] Example 1:
[0013] According to chemical formula CaGdAl 3 O 7 :0.03Ce 3+ , 0.19Tb 3+ The molar ratio of the composition is weighed as CaCO 3 , Gd 2 O 3 , Al 2 O 3 , CeO 2 , Tb 4 O 7 , And weigh 5% of the total weight of the above raw materials H 3 BO 3 As a co-solvent, all the above-mentioned raw materials are ball milled in a planetary ball mill for 4 hours, thoroughly mixed and dried, and passed through a 200-mesh sieve. Put the obtained powder in an alumina crucible, place the crucible in a graphite box, put it in a muffle furnace, and sinter in a reducing atmosphere formed by active graphite powder. The powder is kept at 800°C for 4 hours and at 1300°C for 6 hours. After hours, cool with the furnace, grind and grind it through a 300-mesh sieve; put it in 50℃ water for 15 minutes and let it stand to filter the supernatant liquid, then add it to 50℃ water for 15 minutes and let it stand and filter the supernatant liquid , Repeat 3 times, take out the precipitate, and dr...
Example Embodiment
[0016] Example 2:
[0017] According to chemical formula CaY 0.25 Gd 0.75 Al 3 O 7 :0.05Ce 3+ , 0.20Tb 3+ The molar ratio of the composition is weighed as CaCO 3 , Y 2 O 3 , Gd 2 O 3 , Al 2 O 3 , CeO 2 , Tb 4 O 7 , And weigh 7% of the total weight of the above raw materials H 3 BO 3 As a co-solvent, all the above-mentioned raw materials are ball milled in a planetary ball mill for 4 hours, thoroughly mixed and dried, and passed through a 200-mesh sieve. Put the obtained powder in an alumina crucible, place the crucible in a graphite box, put it in a muffle furnace, and sinter in a reducing atmosphere formed by active graphite powder. The powder is kept at 900°C for 6 hours and at 1350°C for 7 After hours, cool in the furnace, grind and grind through a 300-mesh sieve; put it in 70℃ water for 20 minutes and let it stand to filter the supernatant liquid, then add it to 70℃ water for 20 minutes and let it stand and filter the supernatant liquid , Repeat 3 times, take out the precipit...
Example Embodiment
[0019] Example 3:
[0020] According to chemical formula CaY 0.5 Gd 0.5 Al 3 O 7 :0.07Ce 3+ , 0.24Tb 3+ The molar ratio of the composition is weighed as CaCO 3 , Y 2 O 3 , Gd 2 O 3 , Al 2 O 3 , CeO 2 , Tb 4 O 7 , And weigh 5% of the total weight of the above raw materials K 2 CO 3 As a co-solvent, all the above-mentioned raw materials are ball milled in a planetary ball mill for 4 hours, thoroughly mixed and dried, and passed through a 200-mesh sieve. Put the obtained powder into an alumina crucible, place the crucible in a graphite box, put it into the muffle furnace, 2 And H 2 The powder is sintered in a reducing atmosphere formed by a mixed gas with a molar ratio of 95:5. The powder is kept at 800°C for 6 hours and at 1250°C for 8 hours, cooled with the furnace, ground and refined, and passed through a 300-mesh sieve; placed at 80°C Sonicate in water for 15 minutes, leave it to stand, filter the supernatant liquid, add in 80°C water and sonicate for 15 minutes, let it stand, fi...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap