Influence of CaO and SiO2 additives on the sintering behavior of Cr,Ca:YAG ceramics prepared by solid-state reaction sintering

2020 ◽  
Vol 46 (14) ◽  
pp. 22781-22786 ◽  
Author(s):  
M.A. Chaika ◽  
G. Mancardi ◽  
O.M. Vovk
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Sintering Behavior ◽  
Reaction Sintering

Fabrication and Properties of Ba(Zr0.63Ce0.27)Y0.1O3-δ/ZnO Electrolyte Materials

2012 ◽  
Vol 512-515 ◽  
pp. 1559-1563
Author(s):  
Rui Song Guo ◽  
Li Jun Wu ◽  
Yan Ying Gao ◽  
Ya Ping Deng ◽  
Hong Jiang
Keyword(s):  
Electrical Conductivity ◽  
Fuel Cell ◽  
Solid State ◽  
Power Density ◽  
Solid State Reaction ◽  
Peak Power ◽  
Sintering Behavior ◽  
Reaction Sintering ◽  
Sintering Aid ◽  
Perovskite Type

The perovskite-type Ba(Zr0.63Ce0.27)Y0.1O3-δ (BZCY) was synthesized by solid-state reaction. Sintering behavior and electrical conductivity of the electrolyte materials were improved through optimizing the content of ZnO as sintering aid. The obvious enhancement of density of sintered body was observed due to ZnO reacting with BZCY powder. Relative densities of the samples increased with ZnO content added. A conductivity of 9.27×10-3 S/cm tested in humid hydrogen at 800°C was obtained when the ZnO content was 2 mol%. A peak power density of 12.4 mW/cm2 was delivered based on a single fuel cell with electrolyte-supported configuration.

Sintering behavior and ionic conductivity of Li1.5Al0.5Ti1.5(PO4)3 synthesized with different precursors

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Bambar Davaasuren ◽  
Qianli Ma ◽  
Alexandra von der Heiden ◽  
Frank Tietz
Keyword(s):  
Grain Size ◽  
Solid State ◽  
Ionic Conductivity ◽  
Solid State Reaction ◽  
Sintering Temperature ◽  
Sintering Behavior ◽  
Homogeneous Microstructure ◽  
Micro Cracks ◽  
Primary Particles ◽  
Total Ionic Conductivity

Abstract Li1.5Al0.5Ti1.5(PO4)3 (LATP) powders were prepared from different NO x -free precursors using an aqueous-based solution-assisted solid-state reaction (SA-SSR). The sintering behavior, phase formation, microstructure and ionic conductivity of the powders were explored as a function of sintering temperature. The powders showed a relatively narrow temperature windows in which shrinkage occurred. Relative densities of 95% were reached upon heating between 900 and 960 °C. Depending on the morphological features of the primary particles, either homogeneous and intact microstructures with fine grains of about <2 µm in size or a broad grain size distribution, micro-cracks and grain cleavages were obtained, indicating the instability of the microstructure. Consequently, the ceramics with a homogeneous microstructure possessed a maximum total ionic conductivity of 0.67 mS cm−1, whereas other ceramics reached only 0.58 mS cm−1 and 0.21 mS cm−1.

On reaction in the solid state

1957 ◽  
Vol 239 (1217) ◽  
pp. 145-153 ◽  
Keyword(s):  
Solid State ◽  
Diffusion Process ◽  
Phase Boundary ◽  
Phase Transformations ◽  
Solid State Reaction ◽  
Minimum Temperature ◽  
Rate Theory ◽  
Reaction Sintering ◽  
Rate Law ◽  
Additive Reaction

Using the concept of phonon-lattice interaction, an expression is derived for the minimum temperature, T R , of a solid at which it may enter into solid-state reaction. This expression leads to a more precise idea of single-component reaction (sintering) temperatures than those given by Hüttig. Reaction between two different solids has been re-examined in the light of their physical and crystallographic properties. The rate law for such an additive reaction has been deduced from the quantum rate theory. It is concluded that crystallographic phase transformations and the formation of transitional superstructures constitute the phase-boundary processes and that the kinetics are governed by the dynamics of the diffusion process.

Sintering behavior of bulk SrBi 2 Ta 2 O 9 prepared by solid-state reaction

2003 ◽  
Vol 29 (3) ◽  
pp. 351-353 ◽  
Author(s):  
Baorang Li ◽  
Longtu Li ◽  
Xiaohui Wang
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Sintering Behavior
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