Eu2+-activated barium magnesium aluminate phosphor for plasma displays – Phase relation and mechanism of thermal degradation

2001 ◽  
Vol 92 (3) ◽  
pp. 223-227 ◽  
Author(s):  
Kazuyoshi Yokota ◽  
Shu-Xiu Zhang ◽  
Katsuaki Kimura ◽  
Akira Sakamoto
Keyword(s):  
Thermal Degradation ◽  
Phase Relation ◽  
Magnesium Aluminate ◽  
Aluminate Phosphor ◽  
Plasma Displays

Luminescent characteristics of Dy3+ doped strontium magnesium aluminate phosphor for white LEDs

2011 ◽  
Vol 129 (1-2) ◽  
pp. 292-295 ◽  
Author(s):  
K. Pavani ◽  
J. Suresh Kumar ◽  
T. Sasikala ◽  
B.C. Jamalaiah ◽  
Hyo Jin Seo ◽  
...  
Keyword(s):  
Magnesium Aluminate ◽  
White Leds ◽  
Aluminate Phosphor

Luminescence quenching in thermally-treated barium magnesium aluminate phosphor

2002 ◽  
Vol 81 (10) ◽  
pp. 1759-1761 ◽  
Author(s):  
Kee-Sun Sohn ◽  
Sang Sub Kim ◽  
Hee Dong Park
Keyword(s):  
Luminescence Quenching ◽  
Magnesium Aluminate ◽  
Aluminate Phosphor ◽  
Thermally Treated

LP-3: Late-News Poster: Improvement of Thermal Degradation of Blue Phosphor for Color Plasma Displays

2000 ◽  
Vol 31 (1) ◽  
pp. 683 ◽  
Author(s):  
Shuxiu Zhang ◽  
Kazuyoshi Yokota ◽  
Takayuki Onishi ◽  
Hideki Fujii ◽  
Heiju Uchiike ◽  
...  
Keyword(s):  
Thermal Degradation ◽  
Blue Phosphor ◽  
Late News ◽  
Plasma Displays

scholarly journals Application of Green Solvents for Rare Earth Element Recovery from Aluminate Phosphors

Minerals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 287
Author(s):  
Clive H. Yen ◽  
Rui Cheong
Keyword(s):  
Carbon Dioxide ◽  
Rare Earth ◽  
Supercritical Carbon Dioxide ◽  
Acid Leaching ◽  
Magnesium Aluminate ◽  
Green Solvents ◽  
Strontium Aluminate ◽  
Acid Complex ◽  
Aluminate Phosphor ◽  
Supercritical Carbon

Two processes applying green solvents for recovering rare earth elements (REEs) from different types of aluminate phosphors are demonstrated in this report. For magnesium aluminate-type phosphors, a pretreatment with peroxide calcination was implemented first, and then followed by a supercritical fluid extraction (SFE) process. Supercritical carbon dioxide (sc-CO2) provides an effective and green medium for extracting REEs from dry materials. With the addition of a complex agent, tri-n-butyl phosphate-nitric acid complex, highly efficient and selective extraction of REEs using supercritical carbon dioxide can be achieved. The highest extraction efficiency was 92% for europium from the europium doped barium magnesium aluminate phosphor (BAM), whereas the highest extraction selectivity was more than 99% for the REEs combined from the trichromatic phosphor. On the other hand, for strontium aluminate type phosphors, a direct acid leaching process is suggested. It was found out that acetic acid, which is considerably green, could have high recovery rate for dysprosium (>99%) and europium (~83%) from this strontium aluminate phosphor materials. Nevertheless, both green processes showed promising results and could have high potential for industrial applications.

THERMAL DEGRADATION OF CERMET SOLAR SELECTIVE ABSORBERS

1981 ◽  
Vol 42 (C1) ◽  
pp. C1-301-C1-307
Author(s):  
I. T. Ritchie ◽  
J. Spitz
Keyword(s):  
Thermal Degradation

Aging processes of cement stone during thermal degradation and their control

2020 ◽  
pp. 155-161
Author(s):  
Sh.M. Rakhimbayev ◽  
◽  
T.V. Anikanova ◽  
I.M. Kolesnikov ◽  
◽  
...  
Keyword(s):  
Thermal Degradation ◽  
Cement Stone

Investigation of b-cyclodextrin peroxides’ thermal degradation by pyrolysis mass spectrometry

2016 ◽  
Vol 38 (4) ◽  
pp. 302-306
Author(s):  
V.V. Boyko ◽  
◽  
O.A. Radchenko ◽  
S.V. Riabov ◽  
S.I. Sinelnikov ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Thermal Degradation ◽  
Pyrolysis Mass Spectrometry
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