Relevant bibliographies by topics / Strontium aluminate powders / Journal articles
To see the other types of publications on this topic, follow the link: Strontium aluminate powders.

Journal articles on the topic 'Strontium aluminate powders'

Author: Grafiati
Published: 4 June 2021
Last updated: 9 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 23 journal articles for your research on the topic 'Strontium aluminate powders.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Ow-Yang, Cleva W., Gözde Töral, Zehra Saraç, and Mehmet Ali Gülgün. "Processing and Characterization of Phosphorescent Strontium Aluminate Powders." Advances in Science and Technology 45 (October 2006): 2627–32. http://dx.doi.org/10.4028/www.scientific.net/ast.45.2627.

Full text
Abstract:
We have demonstrated the synthesis of lanthanide co-doped nominally SrAl2O4 powders that phosphoresce over long durations. Previous work has reported that the color of phosphorescence depends on the nature of the alkaline earth cation, and that extended phosphorescence in Eu2+ and other lanthanide co-doped MAl2O4 (M= Sr, Ca, Ba) systems occurred with boron incorporation. To gain further insight into the mechanism of extended phosphorescence persistence, we investigated the incorporation of other glass-forming cations, Si and P. The Eu2+ and Dy3+ co-doped SrAl2O4 (SAED) powders were processed b
APA, Harvard, Vancouver, ISO, and other styles
2

Prodjosantoso, A. K., Brendan J. Kennedy, and Brett A. Hunter. "Synthesis and Structural Studies of Strontium-Substituted Tricalcium Aluminate Ca3-xSrxAl2O6." Australian Journal of Chemistry 53, no. 3 (2000): 195. http://dx.doi.org/10.1071/ch99142.

Full text
Abstract:
A series of 27 oxides of the type Ca3–xSrxAl2O6, 3 £ x £ 0, were prepared as polycrystalline powders. The compounds are isostructural with Ca3Al2O6, space group Pa3–, and their structures were refined from powder neutron and/or X-ray diffraction data by using the Rietveld method. The evolution of Ca/Sr site occupancies, with x, was determined. It was found that the Ca and Sr cations display strong site selectivity, the smaller Ca 2+ cations preferentially occupying the six-coordinate sites. The relationship between the observed structures and the reactivity of Ca3Al2O6 in Portland cement is di
APA, Harvard, Vancouver, ISO, and other styles
3

Rozenberga-Voska, Laura, Jānis Grabis, and Aleksejs Zolotarjovs. "Synthesis of Eu2+ and Dy3+ Doped Strontium Aluminates and their Properties." Key Engineering Materials 721 (December 2016): 311–15. http://dx.doi.org/10.4028/www.scientific.net/kem.721.311.

Full text
Abstract:
Strontium aluminate phosphors were synthesized by the solution combustion method using citric acid, urea or glycine as reducing agent and europium and dysprosium as dopants. The content of both dopants was in the range of 1 – 2 mol%. Dependence of phase composition, crystallite size and specific surface area on calcinations temperature, used reducing agents and dopants were determined. Luminescent properties of the calcinated at 1300 °C powders contained SrAl2O4 (90 %) and Sr4Al24O25 (10%) phases with crystallite size of 80 nm were determined.
APA, Harvard, Vancouver, ISO, and other styles
4

Zhu, Fu Liang, and Yan Shuang Meng. "Crystal Structure and Luminescence of SrAl2O4: Eu2+,Dy3+ Phosphor Prepared by Nano-Pseudoboehmite Particulate Peptizing Method." Applied Mechanics and Materials 319 (May 2013): 3–8. http://dx.doi.org/10.4028/www.scientific.net/amm.319.3.

Full text
Abstract:
Eu2+, Dy3+co-doped strontium aluminate (SrAl2O4) phosphor with high brightness and long afterglow were prepared by nano pseudo-boehmite particulate sol method. The precursor was prepared by peptizing AlOOH powders with HNO3 as peptize agent. The influence of preparation parameters on crystal structure and luminescent properties of the phosphor have been studied systematically. Monoclinic SrAl2O4host with single-phase can be obtained by controlling sintering temperature at 1200°C, 4Wt%B2O3 and RSr/Al=0.34. The sample exhibits an intensive emission peak at 515 nm and the luminescent intensity de
APA, Harvard, Vancouver, ISO, and other styles
5

Ianoş, Robert, Roxana Istratie, Cornelia Păcurariu, and Radu Lazău. "Solution combustion synthesis of strontium aluminate, SrAl2O4, powders: single-fuel versus fuel-mixture approach." Physical Chemistry Chemical Physics 18, no. 2 (2016): 1150–57. http://dx.doi.org/10.1039/c5cp06240c.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Wang, Bing, Chuan Cang Zhou, and Zhong Yuan Lu. "Study on the Synthesis of Long Afterglow Nano-Phosphors SrAl2O4:Eu,Dy by Microemulsion Method." Key Engineering Materials 336-338 (April 2007): 613–15. http://dx.doi.org/10.4028/www.scientific.net/kem.336-338.613.

Full text
Abstract:
To gain nanometer SrAl2O4:Eu,Dy phosphors, uniform fine precursors of Eu and Dy ion doping strontium aluminate were prepared by microemulsion technology. Using as-synthesized stuff, long afterglow phosphors SrAl2O4:Eu,Dy were obtained after sintered at 1200°C. TEM characterization showed the morphology of their grains is sphere-shaped with size less then 100nm. XRD analysis illuminated the crystal structure of SrAl2O4:Eu2+, Dy3+ phosphors is monoclinic. Fluorometry examination detected the peak in emitting spectrum is at 510nm, and at 310nm in exciting spectrum, which both have little blue shi
APA, Harvard, Vancouver, ISO, and other styles
7

Kaya, Selvin Yesilay, Bekir Karasu, Guray Kaya, and Erkul Karacaoğlu. "Influences of Eu2+ and Dy3+ Contents on the Properties of Long Afterglow Strontium Aluminate Phosphors." Advances in Science and Technology 62 (October 2010): 88–94. http://dx.doi.org/10.4028/www.scientific.net/ast.62.88.

Full text
Abstract:
The detailed preparation process of Eu2+ and Dy3+ ion co-doped phosphor powders in Sr4Al14O25:Eu2+/Dy3+ phosphor system with bluish-green long afterglow produced by solid state reaction method under reducing atmosphere is here reported. X-ray diffraction (XRD), scanning electron microscopy (SEM), and particle size analysis were made to assign the effects of Eu and Dy ions on the luminescent properties of the synthesized phosphors, which were determined by measuring the photoluminescence spectra. The maximum emission intensity of these phosphors under excitation was investigated. As a result, t
APA, Harvard, Vancouver, ISO, and other styles
8

Choong, H., N. Suardi, and N. Ahmed. "Evaluation of strontium aluminate phosphorescent effect on blood as potential light source for phototherapy." Biomedical Photonics 9, no. 3 (2020): 21–29. http://dx.doi.org/10.24931/2413-9432-2020-9-3-21-29.

Full text
Abstract:
Phototherapy has shown its effect on cell stimulation and inhibition based on Arndt-Schulz model. Even though this therapeutic method has apparent effect, but it has limitations for epithelial application due to limitations on light penetration. Hence, with the ideology of fully overcoming this limitation, phosphorescent powder (strontium aluminate) is proposed as the potential light source that emitting photon from inside the body for phototherapy purposes. The strontium aluminate powder used in the experiment has the highest peak absorption at wavelength around 650 nm and lowest at around 35
APA, Harvard, Vancouver, ISO, and other styles
9

Auzins, Krisjanis, Aleksejs Zolotarjovs, Ivita Bite та ін. "Production of Phosphorescent Coatings on 6082 Aluminum Using Sr0.95Eu0.02Dy0.03Al2O4-δ Powder and Plasma Electrolytic Oxidation". Coatings 9, № 12 (2019): 865. http://dx.doi.org/10.3390/coatings9120865.

Full text
Abstract:
In this study, a new approach for producing phosphorescent aluminum coatings was studied. Using the plasma electrolytic oxidation (PEO) process, a porous oxide coating was produced on the Al6082 aluminum alloy substrate. Afterwards, activated strontium aluminate (SrAl2O4: Eu2+, Dy3+) powder was filled into the cavities and pores of the PEO coating, which resulted in a surface that exhibits long-lasting luminescence. The structural and optical properties were studied using XRD, SEM, and photoluminescence measurements. It was found that the treatment time affects the morphology of the coating, w
APA, Harvard, Vancouver, ISO, and other styles
10

Kikuchi, Takeyuki, Tatsuya Nakamura, Masamichi Miki, et al. "Synthesis of Hexagonal Ferrites by Citric Complex Method." Advances in Science and Technology 45 (October 2006): 697–700. http://dx.doi.org/10.4028/www.scientific.net/ast.45.697.

Full text
Abstract:
Various hexagonal ferrites, which include hard and soft ferrites, were prepared by citric complex method. High purity reagent of strontium carbonate, iron (III) nitrate ennnahydrate, cobalt (II) nitrate hexahydrate and lanthanum oxide were used as starting materials. Prepared aqueous solution was heated for dehydration and gelling. Thermal pyrolysis was carried out by heating the gel. The obtained precursor powders were ground with an alumina mortar and compacted by uniaxial pressing into disk specimens and then heated at temperature range between 1023K and 1523K in air. Phase identification a
APA, Harvard, Vancouver, ISO, and other styles
11

SINGH, VIJAY, and JUN-JIE ZHU. "SYNTHESIS AND PHOTOLUMINESCENCE PROPERTIES OF Er3+, Eu3+ IONS ACTIVATED SrAl12O19." International Journal of Modern Physics B 20, no. 29 (2006): 4891–98. http://dx.doi.org/10.1142/s0217979206035643.

Full text
Abstract:
Synthesis of Er 3+, Eu 3+ ions activated strontium hexa-aluminate phosphor using the combustion method is described. An efficient phosphor can be prepared by this method at reaction temperatures as low as 500°C in a few minutes. Powder X-ray diffraction and the optical properties were studied by photoluminescence spectra.
APA, Harvard, Vancouver, ISO, and other styles
12

Buggakupta, Wantanee. "Mechanical Properties of Alumina Matrix Composites due to a Combination of Sr- and Ca-Hexaluminates." Key Engineering Materials 484 (July 2011): 102–5. http://dx.doi.org/10.4028/www.scientific.net/kem.484.102.

Full text
Abstract:
Alumina matrix composites have been successfully used in a wide range of applications for decades. Even alumina itself provides several desirable properties e.g. strength, chemical and thermal stability together with hardness, its toughness is still to be concerned. An addition of some intermediate phases such as alkali earth hexaluminates can enhance fracture toughness according to their unique morphology. This work investigated a variation in mechanical properties of alumina as a presence of two types of dispersed phases: strontium hexaluminate and calcium hexaluminate. The preformed hexalum
APA, Harvard, Vancouver, ISO, and other styles
13

Müller, Frank A., Heinz Dieter Kurland, and Janet Grabow. "Nanoparticles for Biomedical Applications Prepared by CO2 Laser Vaporization." Key Engineering Materials 587 (November 2013): 154–59. http://dx.doi.org/10.4028/www.scientific.net/kem.587.154.

Full text
Abstract:
Functional ceramic nanopowders with emphasis on biomedical applications were engineered by gas-phase condensation using the CO2 laser vaporization (LAVA) technique. Europium doped strontium aluminate nanoparticles (NP) were prepared from a SrO/α-Al2O3/Eu2O3 powder mixture. Excited with ultraviolet radiation (UV), the as-prepared amorphous NP revealed red photoluminescence emission. After annealing in reductive atmosphere crystalline SrAl2O4:Eu2+ nanopowder was obtained showing strong green emission at UV excitation. Ferrimagnetic iron oxide (FexOy) nanopowders were prepared starting from α-Fe2
APA, Harvard, Vancouver, ISO, and other styles
14

Rojas-Hernandez, R. E., F. Rubio-Marcos, E. Enríquez, M. A. De La Rubia, and J. F. Fernandez. "A low-energy milling approach to reduce particle size maintains the luminescence of strontium aluminates." RSC Advances 5, no. 53 (2015): 42559–67. http://dx.doi.org/10.1039/c5ra04878h.

Full text
APA, Harvard, Vancouver, ISO, and other styles
15

Tan, Melissa H. X., Robert G. Hill, and Paul Anderson. "Comparing the Air Abrasion Cutting Efficacy of Dentine Using a Fluoride-Containing Bioactive Glass versus an Alumina Abrasive: AnIn VitroStudy." International Journal of Dentistry 2015 (2015): 1–8. http://dx.doi.org/10.1155/2015/521901.

Full text
Abstract:
Air abrasion as a caries removal technique is less aggressive than conventional techniques and is compatible for use with adhesive restorative materials. Alumina, while being currently the most common abrasive used for cutting, has controversial health and safety issues and no remineralisation properties. The alternative, a bioactive glass, 45S5, has the advantage of promoting hard tissue remineralisation. However, 45S5 is slow as a cutting abrasive and lacks fluoride in its formulation. The aim of this study was to compare the cutting efficacy of dentine using a customised fluoride-containing
APA, Harvard, Vancouver, ISO, and other styles
16

Dann, Sandra E., and Mark T. Weller. "The structures of strontium tellurite and strontium telluride aluminate sodalites studied by powder neutron diffraction, EXAFS, IR and MAS NMR spectroscopies." Journal of Materials Chemistry 6, no. 10 (1996): 1717. http://dx.doi.org/10.1039/jm9960601717.

Full text
APA, Harvard, Vancouver, ISO, and other styles
17

Yamada, H., W. S. Shi, and C. N. Xu. "Observation of orientational disorder in the hexagonal stuffed tridymite Sr0.864Eu0.136Al2O4by the maximum-entropy method." Journal of Applied Crystallography 37, no. 5 (2004): 698–702. http://dx.doi.org/10.1107/s002188980401430x.

Full text
Abstract:
The crystal structure of a strontium europium aluminate, Sr0.864Eu0.136Al2O4, with a novel hexagonal form was investigated by a combination of Rietveld analysis and the maximum-entropy method (MEM) with synchrotron X-ray powder diffraction data. The electron density image calculated by the MEM/Rietveld method revealed that the apical oxygen ion in the AlO4tetrahedron has a broad distribution corresponding to an extraordinarily large atomic displacement parameter. This structure could be expressed by a split-atom model, with which the Rietveld refinement gaveRwp= 2.99% andRB= 4.16%. Subsequentl
APA, Harvard, Vancouver, ISO, and other styles
18

Hwangbo, Seung, Jin-Tae Kim, and Kyu-Seog Hwang. "Improved efficiency of dye-sensitized solar cells by doping of strontium aluminate phosphor in TiO2 photoelectrode." Materials Science-Poland 33, no. 2 (2015): 237–41. http://dx.doi.org/10.1515/msp-2015-0031.

Full text
Abstract:
AbstractSrAl2O4:Eu2+, Dy3+ phosphor was synthesized by chemical solution route to use as a dopant in TiO2 layer employed as a photoelectrode for down conversion of ultraviolet and near-ultraviolet to visible and near-infrared light in a dye-sensitized solar cell. Nano-crystalline structure of the SrAl2O4:Eu2+, Dy3+ powder was confirmed by X-ray diffraction analysis and field emission scanning electron microscopy. Monitored at 520 nm, SrAl2O4:Eu2+, Dy3+ phosphor showed emission peaks at 460 to 610 nm due to 4f6 4f7 transitions of Eu2+ ions. For the study, SrAl2O4:Eu2+, Dy3+ phosphor-doped TiO2
APA, Harvard, Vancouver, ISO, and other styles
19

Yamada, H., K. Nishikubo, and C. N. Xu. "Determination of Eu Sites in Highly Europium-Doped Strontium Aluminate Phosphor Using Synchrotron X-Ray Powder Diffraction Analysis." Journal of The Electrochemical Society 155, no. 7 (2008): F139. http://dx.doi.org/10.1149/1.2907407.

Full text
APA, Harvard, Vancouver, ISO, and other styles
20

Gorgieva, Selestina, Natalija Virant, and Alenka Ojstršek. "Complementary Assessment of Commercial Photoluminescent Pigments Printed on Cotton Fabric." Polymers 11, no. 7 (2019): 1216. http://dx.doi.org/10.3390/polym11071216.

Full text
Abstract:
The presented study focuses on photoluminescent pigments applied on cotton fabric by a screen-printed procedure using polydimethylsiloxane (PDMS) as a binder. Microscopic data depicts irregular shapes and relatively wide size distribution (3–80 µm) of pigments. Regarding composition, the Energy-Dispersive X-ray (EDX) and Fourier Transform Infrared (FTIR) spectroscopy data complement findings suggesting the presence of Eu-doped strontium aluminate in the yellow-green, calcium aluminate in the violet pigment, and metal oxides in the blue pigment. The optical properties of pigment-enriched PDMS-c
APA, Harvard, Vancouver, ISO, and other styles
21

Kirchnerovà, J. "Synthesis of strontium beta alumina precursor powders and their use in the fabrication of dense ceramic electrolytes." Solid State Ionics 93, no. 1-2 (1996): 159–64. http://dx.doi.org/10.1016/s0167-2738(96)00520-6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
22

Brownfield, Michael E. "Characterization of feed coals and coal combustion byproducts from the Wyodak-Anderson coal zone, Powder River Basin, Wyoming." Mountain Geologist 57, no. 3 (2020): 199–240. http://dx.doi.org/10.31582/rmag.mg.57.3.199.

Full text
Abstract:
The U.S. Geological Survey (USGS) determined the physical and chemical properties of more than 260 feed coal and coal combustion byproducts from two coal-fired power plants. These plants utilized a low-sulfur (0.23-0.47 wt. % S) and low ash (4.9-6.3 wt. % ash) subbituminous coal from the Wyodak-Anderson coal zone in the Tongue River Member of the Paleocene Fort Union Formation, Powder River Basin, Wyoming. Fifty-three samples of bituminous coal were collected and analyzed from a Kentucky power plant, which used several sources of bituminous coals from the Appalachian and Illinois Basins. Based
APA, Harvard, Vancouver, ISO, and other styles
23

Zimmer, Erich, K. Scharf, and S. O. Schmidt. "Alumina as a Matrix for Fixation of Fission Products." MRS Proceedings 257 (1991). http://dx.doi.org/10.1557/proc-257-227.

Full text
Abstract:
ABSTRACTFission products and α-emitters from reprocessing plants ( HAW ) are incorporatedinto a ceramic matrix consisting of 90 w/o α-AI2O3 The amount of HAW in the product is 10 w/o. The matrix is produced by a sol-gel technique using a boehmite powder and a SiO2 sol as starting materials. To reduce the sintering temperature seeding with α-AI2O3 particlesis applied. The first step of the process is mixing of the starting materials with the nitric acid containing HAW. This results in the production of a gel. The gel is extruded and subsequently dried at 105ºC. Calcination is carried out in a h
APA, Harvard, Vancouver, ISO, and other styles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography