Combustion synthesis of lead oxide nanopowders for the preparation of PMN–PT transparent ceramics

Chen, Xuan; Chen, Shi; Clequin, Pierre-Marie; Shoulders, W. Taylor; Gaumé, Romain

doi:10.1016/j.ceramint.2014.09.001

Cited by 13 publications

(4 citation statements)

References 43 publications

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“…A mechanochemical alloying followed by hot pressing was utilised to produce polycrystalline AlMgB 14 ceramics with submicron-scale microstructure [29,30]. Spark plasma sintering is another effective technique in synthesis of ceramics [31][32][33][34][35][36][37]. More recently, studies on the processing of AlMgB 14 were reported, where the ceramics was sintered by application of electric field in addition to pressure for sintering of the material [38].…”

Section: Introductionmentioning

confidence: 99%

Aluminium magnesium boride: synthesis, sintering and microstructure

Xie

DeLucca

Haber

et al. 2017

Advances in Applied Ceramics

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AlMgB 14 ceramics were reported as high-hardness materials over a decade ago. While different synthesis routes for processing of AlMgB 14 ceramics were reported in the past, however the synthesis routes are still not optimised and present a significant challenge to the manufacturers. In this work six different synthesis routes were explored for the synthesis of AlMgB 14 powder. The synthesised compositions were characterised by XRD, where weight fractions of each phase were calculated by Rietveld refinement. The bulk ceramics were sintered using powder with the highest yield (93.2%) of AlMgB 14 phase by spark plasma sintering at 1315°C and 50 MPa. Both phase composition and microstructure of the sintered AlMgB 14 were characterised by XRD and SEM/EDS, which revealed the existence of AlMgB 14 , MgAl 2 O 4 and a small amount of unreacted Al. Hardness and indentation fracture resistance of AlMgB 14 ceramics were measured to be 26.7 ± 2.2 GPa and 5.59 ± 0.42 MPa m 1/2 , respectively by Vickers indentation technique.

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Section: Introductionmentioning

confidence: 99%

Aluminium magnesium boride: synthesis, sintering and microstructure

Xie

DeLucca

Haber

et al. 2017

Advances in Applied Ceramics

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“…Whether the result of imperfect powder preparation (e.g. slight weighing errors due to water absorption on high surface-area powders, inhomogeneous co-precipitation of precursors with distinct solubility constants, contamination by grinding media during blending), thermal decomposition during hightemperature sintering [23,24] or because of unbalanced condensation rates, as in the synthesis of chemically-vapor deposited (CVD'ed) ceramics [25], composition-control poses severe challenges to the consistent fabrication of ceramics with high optical quality. It has been shown, for example, that the solid-solution range for the Yttrium Aluminum Garnet (YAG, Y 3 Al 5 O 12 ) [26,27], a material widely used as laser gain medium [12,28], phosphor [29] and scintillator [20], lies within (5/3-0.03) <Al/Y< (5/3 + 0.008) [20,30].…”

Section: Introductionmentioning

confidence: 99%

Quantification of non-stoichiometry in YAG ceramics using laser-induced breakdown spectroscopy

Pandey¹,

Martinez²,

Pelascini³

et al. 2017

Opt. Mater. Express

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Strict control of composition is of paramount importance for the reproducible fabrication of advanced ceramics. In particular, the preparation of high-grade transparent ceramics of definite line-compounds requires that the ratio of major constitutive elements be quantified with a precision better than a fraction of a mole percent to prevent the precipitation of secondary phases and the scattering of light. Such a requirement poses difficult challenges to most analytical methods, especially when applied to nearly-stoichiometric insulating phases. In this work, we show that laser-induced breakdown spectroscopy (LIBS) is a wellsuited technique for the assessment of non-stoichiometry in yttrium aluminum garnet (YAG) ceramics and that the aluminum to yttrium ratio can be determined with a resolution of 0.3 mol %, well within the phase boundaries of YAG.

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“…This approach has been widely used in producing advanced ceramic materials [15,16,17,18]. In this approach, raw materials (such as limestone, clay, and aluminum nitrate, etc. )…”

Section: Introductionmentioning

confidence: 99%

“…As an alternative [ 14 ], a combustion approach was proposed to synthesize ultrafine construction materials. This approach has been widely used in producing advanced ceramic materials [ 15 , 16 , 17 , 18 ]. In this approach, raw materials (such as limestone, clay, and aluminum nitrate, etc. )…”

Section: Introductionmentioning

confidence: 99%

Influence of Ultrafine 2CaO·SiO2 Powder on Hydration Properties of Reactive Powder Concrete

Sun

Memon

et al. 2015

Materials

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In this research, we assessed the influence of an ultrafine 2CaO·SiO2 powder on the hydration properties of a reactive powder concrete system. The ultrafine powder was manufactured through chemical combustion method. The morphology of ultrafine powder and the development of hydration products in the cement paste prepared with ultrafine powder were investigated by scanning electron microscopy (SEM), mineralogical composition were determined by X-ray diffraction, while the heat release characteristics up to the age of 3 days were investigated by calorimetry. Moreover, the properties of cementitious system in fresh and hardened state (setting time, drying shrinkage, and compressive strength) with 5% ordinary Portland cement replaced by ultrafine powder were evaluated. From SEM micrographs, the particle size of ultrafine powder was found to be up to several hundred nanometers. The hydration product started formulating at the age of 3 days due to slow reacting nature of belitic 2CaO·SiO2. The initial and final setting times were prolonged and no significant difference in drying shrinkage was observed when 5% ordinary Portland cement was replaced by ultrafine powder. Moreover, in comparison to control reactive powder concrete, the reactive powder concrete containing ultrafine powder showed improvement in compressive strength at and above 7 days of testing. Based on above, it can be concluded that the manufactured ultrafine 2CaO·SiO2 powder has the potential to improve the performance of a reactive powder cementitious system.

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Combustion synthesis of lead oxide nanopowders for the preparation of PMN–PT transparent ceramics

Cited by 13 publications

References 43 publications

Aluminium magnesium boride: synthesis, sintering and microstructure

Aluminium magnesium boride: synthesis, sintering and microstructure

Quantification of non-stoichiometry in YAG ceramics using laser-induced breakdown spectroscopy

Influence of Ultrafine 2CaO·SiO2 Powder on Hydration Properties of Reactive Powder Concrete

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