Combustion synthesis of compounds in the Y2O3-Al2O3 system

Yadav, P. J.; Muley, Aarti; Joshi, C. P.; Moharil, S. V.; Muthal, P. L.; Dhopte, S.M.

doi:10.3103/s1061386212020124

Cited by 13 publications

(8 citation statements)

References 102 publications

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“…Results and discussion Figure 1 shows the temperature evolution measured by an IR camera and a series of images taken during the various stages of the combustion reactions (1)(2)(3). In the case of the first two reactions (1-2), a single fuel was used (urea, glycine), whilst in the case of reaction (3) a mixture of urea and glycine was used.…”

Section: Methodsmentioning

confidence: 99%

“…Introduction Y 2 O 3 -Al 2 O 3 system host compounds with high technological impact such are YAlO 3 orthorhombic perovskite (YAP), Y 3 Al 5 O 12 cubic garnet (YAG) and Y 4 Al 2 O 9 monoclinic (YAM) [1,2]. YAP shows valuable properties both in pure phase and doped with various rare earths, which recommend it for cutting edge applications like host matrix for lasers [3] and pigments [4], phosphor materials [5], scintillators [6,7], or thermoluminescent detectors [8].…”

mentioning

confidence: 99%

“…YAP is mainly synthesized by solid-state reaction techniques starting from mechanical mixtures of oxides or oxide precursors (usually carbonates and oxalates) at temperatures above 1500°C, up to 1800°C [2]. Yet, a number of chemical routes are also emerging in YAP synthesis [9], with a view to achieve lower energy consumption and improved product features: co-precipitation [10], sol-gel [11], hydrothermal [12], combustion synthesis [1,13] or modified polymeric precursors [6].…”

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confidence: 99%

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Single-step combustion synthesis of YAlO3 powders

et al. 2015

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Single-phase YAlO 3 was obtained by combustion synthesis using a fuel mixture of urea and glycine. Temperature-time profile recorded by infrared thermal imaging indicates that an aqueous solution of Y(NO 3 ) 3 :-Al(NO 3 ) 3 :urea:glycine (molar ratio of 6:6:15:10) ignites at 315°C, leading to the formation of a white nanocrystalline YAlO 3 powder (51 nm) having a BET surface area of 3 m 2 /g. No additional annealing was required, as the formation of YAlO 3 structure took place at the expense of the heat generated in situ by the highly exothermal, selfpropagated combustion reaction. In this case, the maximum combustion temperature recorded during the combustion reaction was 1661°C. Powders prepared under the same conditions but using the classical version of the combustion method, involving the use of a single fuel (urea or glycine), were amorphous. The absence of YAlO 3 from these samples was caused by the lower temperature achieved during the combustion processes: 414°C in the case of urea and 829°C in the case of glycine.

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Section: Methodsmentioning

confidence: 99%

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Single-step combustion synthesis of YAlO3 powders

et al. 2015

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“…In the present work, the advantages of YAG:Ce has been enhanced using addition of co-dopant Gd 3+ and Tb 3+ separately by single step combustion synthesis [25], carried out at 500°C furnace temperature without taking recourse to any post combustion thermal treatment. The concentration of Ce was varied to optimise the dopant amount that produces maximum yellow luminescence in YAG.…”

Section: +mentioning

confidence: 99%

Luminescence studies on lanthanide ions (Gd3+, Tb3+) doped YAG:Ce phosphors by combustion synthesis

Upasani¹,

Butey²

2014

IOSRJAP

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“…Thus, because of high costs of YAPmonocrystals manufacturing and the expected different behaviour of polycrystalline ceramics under the relevant excitation, manufacturing of RE-doped YAP powders or polycrystalline ceramics is a challenging task in nowadays research community. The results on preparation of YAP powders/nanopowders are scarce and they show complexity of that phase formation [7][8][9][10][11][12][13][14]. The topic of this work is to check the possibility of manufacturing the monophase YAP powder or polycrystalline ceramics by the solid-state reaction method using different particle size of starting powders and methods of homogenization.…”

Section: Introductionmentioning

confidence: 99%

Influence of Homogenization and Micro/Nano Source of Starting Powders on Format Ion of the Single YAP Phase

Michalik¹,

Pawlik²,

Plewa³

et al. 2016

Archives of Metallurgy and Materials

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Manufacturing high purity polycrystalline YAlO3 (YAP) ceramics could replace monocrystalline YAP thus recently it is an interesting task for low cost producers of scintillators. The paper presents influence of different source of initial oxide powders (micro/nano powders of Y2O3 and Al2O3) and the method of their homogenization on the formation of a YAP phase. The solid state reaction method was used to prepare YAP powder or ceramic pellets. After preheating, all samples in the form of powders and pellets were heat-treated in the temperature range of 1050-1650 °C. DTA method was applied for examination of the phase crystallization in the tested system. X-ray diffraction method (XRD) was used for characterization of the phase composition. X-ray microanalysis (EDS) was used to control homogeneity in the small areas. Morphology of the resultant samples are presented on SEM pictures. The results show a significant influence of the starting powders on the homogeneity, purity and temperature of formation of the main phase.

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Combustion synthesis of compounds in the Y2O3-Al2O3 system

Cited by 13 publications

References 102 publications

Single-step combustion synthesis of YAlO3 powders

Single-step combustion synthesis of YAlO3 powders

Luminescence studies on lanthanide ions (Gd3+, Tb3+) doped YAG:Ce phosphors by combustion synthesis

Influence of Homogenization and Micro/Nano Source of Starting Powders on Format Ion of the Single YAP Phase

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