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Influence of precipitation on the microstructure and sinterability of yttria
The circumstances during precipitation of an yttrium oxide precursor influence the sinterability of the resulting powder. In this work the influence of the yttrium (III) ...
[ 1-s2.0-0167273889903457-main.pdf?_tid=b6066c06-0bbc-11e4-9ff7-00000aacb35f&acdnat=1405386766_4ce600f6871da662e8a6d0bc080718fc - Read/Download File

Preparation and properties of transparent thoria-yttria ceramics
Precipitation and sintering conditions of thoria-yttria have been optimized to obtain .... Influence of precipitation on the microstructure and sinterability of yttria.
[ 1-s2.0-0167273889901690-main.pdf?_tid=57b17368-b426-11e4-9edb-00000aab0f6c&acdnat=1423903930_63223b0ebfa9607eb210b6e35e9b3609 - Read/Download File

Co-Precipitation of YAG Powders for Transparent Materials: Effect of
Oct 22, 2014 ... YAG precursors, pressureless sintering at 1500–1600 °C/3 h gave rise to pure ... precipitant; phase evolution; sintering; microstructure.
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(Particle uniformity on sintering; Matijevic).pdf - Alfred University
same precipitation process, in order to prevent agglomeration. Uniform, fine- grained microstructure with 99 % theoretical density was obtained upon sintering these uniformly packed ... 38] studied the influence of the particle size on the sintering ... Uniform spherical yttria precursor particles can be prepared from yttrium salts.
[ 96-1-SS (Particle uniformity on sintering; Matijevic).pdf - Read/Download File

94-3-JMR (silica yttria; Matijevic).pdf - Alfred University
Sep 27, 1993 ... Preparation, characterization, and sinterability of well-defined silica/yttria powders ... yttria coatings, or vice versa, were prepared by a precipitation technique. The overall ... microstructure were followed with temperature. In general, the ...... Silica coated with yttria: The influence of the thick- ness of the yttria ...
[ 94-3-JMR (silica yttria; Matijevic).pdf - Read/Download File

Influence of yttria addition on the phase transformations of zirconia
... method to exploit the properties of zirconia is improvement of sinter ability by stabili- ... process [13], coprecipitation with ammonia [14], precipitation with urea [ 15], polymeric ... observe the microstructure and morphology of Y2O3 stabilized.
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High-Density Yttria for Practical Ceramic Applications
yttria, preparation, low temperature, density, sintering.] I. Introduction ... final sintered microstructure of a ceramic is highly dependent on the following: (1) the  ...
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Influence of Obtaining Conditions on Kinetics of the Initial Sintering
that nanopowder 3Y-TZP produced by the co-precipitation method (DIPE) was sintered according to ... Yttria-stabilized zirconia (Y-TZP) ceramics has excellent.
[ s11671-016-1452-3.pdf - Read/Download File

Mechanisms of Microstructure Control in Conventional Sintering
Mar 2, 2012 ... TiO2 (12nm), Y2O3 (4 nm) and ZrO2 (8nm), found lower sintering .... al., 2008) studied the influence of heating curve on the sintering of alumina ..... rain size (n m. ) relative density (% TD). T1=1400oC and T2=1300oC. TSS10.
[ 29792.pdf - Read/Download File

Co-precipitation of Y2O3 powder - DiVA
In the aim of processing transparent ceramics, the sinterability of the Yttria powder need to be as good as possible, for an heterogeneous microstructure or some .... influence of each parameters separately, especially solution's concentration, ...
[ FULLTEXT01.pdf - Read/Download File

The influence of sulphur on the processing of zirconia - Ipen.br
Yttria stabilized zirconia powders were synthesized by the coprecipitation route. Zirconium oxychloride ... Keywords: ZrO2; Impurities; Sintering; Microstructure- final; Porosity. 1. ... Originated from the precipitation of zirconium basic sulphate ...
[ 09088.pdf - Read/Download File

Effect of Microstructural Characteristics on Corrosion Behaviour of
composites by modifying the microstructure through microwave sintering (MWS) at 1200°C ... occurs followed by solution re-precipitation resulting in enhanced densification. ... Extensive studies have been carried out on yttria dispersed P/M ..... curves of all 316L compacts; which depicts the influence of YAG content and.
[ 137.pdf - Read/Download File

Consolidation and properties of Gd0.1Ce0.9O1.95 nanoparticles for
during the co-precipitation process by studying the lattice parameter as a function of temperature. ... solubility, sinterability, and microstructure were studied within a .... ary strongly influence the inter-granular conductivity.12. As Fig. 10 shows, the ... Influence of microstructure on the ionic conductivity of yttria-stabilized zirco-.
[ j13.pdf - Read/Download File

Synthesis of yttria nanopowders for transparent yttria ceramics
Oct 25, 2005 ... a carbonate precipitation method for synthesizing highly ... and sinterability of the precursor and resultant yttria pow- ..... 10 shows the microstructure of the polished and ... tion process influences the morphology of yttrium.
[ OptM-2006-239.pdf - Read/Download File

The influence of washing and calcination condition on urea-derived
of supersaturation is greatly decreased during precipitation. [9]. In contrast, the ... washing in cases of CaO–ZrO2 [13] or Y2O3–ZrO2 [14]. This would be ..... state of the powders will influence the sintering behaviour. [16,27]. ..... Microstructure.
[ 000166685000007.pdf - Read/Download File

Microstructure Characteristics of Ultra-fine ZrO2-Y203 Ceramic
precipitation methods. ... Ultra-fine and homogeneous zirconia-yttria powders are of ... homogeneity and improved sinterability. Those ... two different hydrous-gel precipitation tech- niques. .... respectively) seem to have a great influence on.
[ microstructure.pdf - Read/Download File

The Influence of Crystallization and Washing Medium on the
A zirconia-yttria gel, made by coprecipitation, was treated in six ... sintering behaviour of such fine powders is deter- mined, to a large ... prepared by a gel precipitation technique using ..... Microstructure of the HC-E400 material sintered for.
[ Sagel-Ransijn96influence.pdf - Read/Download File

SINTERING OF BULK ZIRCONIA NANOCERAMICS
Jun 11, 2003 ... Abstract. The sintering and the microstructure of zirconia ceramics prepared by cold isostatic pressing of ... of yttria. It was found that higher compacting pressures (700 MPa) yielded green bodies with ... After precipitation the product was stirred intensively .... yttria content did not significantly influence sinter-.
[ maca.pdf - Read/Download File

Low-Temperature Synthesis of ZrO2-8 mol.% Y2O3 - doiSerbia
by co-precipitation of zirconium and yttrium hydroxides resulted from salt hydrolysis with .... An additional adverse influence on the final density was undoubtedly brought about ... Microstructure of sintering sample at 1500°С. Density 5.91g/sм3.
[ vol43_3_01.pdf - Read/Download File

Temperature - OSTI
primary mechanisms for the microstructure improvement in two-step sintering of AI203 ceramics. ..... The influence of the microstructure of the green compact on sintering behavior has been .... W.H. Rhodes, "Agglomerate and Particle Size Effects on Sintering Yttria-Stabilized. Zirconia," J. Am. ..... 103 "C/rain.) and a brief hold ...
[ 7081532 - Read/Download File

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