Influence of Cr doping on the phase composition of Cr,Ca:YAG ceramics by solid state reaction sintering

2018 ◽  
Vol 102 (4) ◽  
pp. 2104-2115 ◽  
Author(s):  
Mykhailo Chaika ◽  
Wojciech Paszkowicz ◽  
Wiesław Strek ◽  
Dariusz Hreniak ◽  
Robert Tomala ◽  
...  
Keyword(s):  
Phase Composition ◽  
Solid State ◽  
Solid State Reaction ◽  
Reaction Sintering ◽  
Cr Doping

scholarly journals Synthesis and Thermal Properties of Cerium-Dysprosium Oxide

2016 ◽  
Vol 61 (2) ◽  
pp. 965-969 ◽  
Author(s):  
M. Mikuśkiewicz ◽  
M. Stopyra ◽  
G. Moskal
Keyword(s):  
Thermal Properties ◽  
Phase Composition ◽  
Thermal Diffusivity ◽  
Solid State ◽  
Cerium Oxide ◽  
Solid State Reaction ◽  
Synthesis And Characterization ◽  
Equimolar Ratio ◽  
Dysprosium Oxide

Abstract The paper presents results of investigation on synthesis and characterization of cerium-dysprosium oxide. The input powders - dysprosium oxide Dy2O3 and cerium oxide CeO2 - were mixed so as to obtain equimolar ratio of cations, milled in alcohol and synthesized via solid state reaction process at 1350°C under 15MPa in vacuum for 2h. The microstructure, phase composition and thermal properties were analyzed. The obtained material was multiphase. Non-stoichiometric compounds were identified. Thermal diffusivity of investigated material decreased in the temperature range of 25-1000°C from 0,71 to 0,45 mm2/s.

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.

Ceramic Pigments with Perovskite Structure

2006 ◽  
Vol 45 ◽  
pp. 276-280 ◽  
Author(s):  
Ewa Stobierska ◽  
Jerzy Lis ◽  
Mirosław M. Bućko ◽  
Agnieszka Gubernat
Keyword(s):  
Phase Composition ◽  
Solid State ◽  
Solid State Reaction ◽  
Perovskite Structure ◽  
Raw Materials ◽  
Preliminary Investigation ◽  
Ceramic Pigments ◽  
Pigment Composition ◽  
Materials Used

The results of preliminary investigation on preparation of perovskite pigments by solid state reaction are presented. The effects of different raw materials used as component carriers on formation of colored pigments were examined. Pigment composition, optimum chromophore addition, type of mineralizer and the conditions of synthesis were determined experimentally as well as the resulting color, phase composition and morphology of powders. The wet method of preparation of starting mixtures was also analyzed.

scholarly journals Enhancing the rate performance of spherical LiFeBO3/C via Cr doping

RSC Advances ◽  
2017 ◽  
Vol 7 (54) ◽  
pp. 33745-33750 ◽  
Author(s):  
X. X. Dong ◽  
C. Y. Huang ◽  
Q. Jin ◽  
J. Zhou ◽  
P. Feng ◽  
...  
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Ball Milling ◽  
Spray Drying ◽  
Solid State Reaction ◽  
Rate Performance ◽  
Cr Doping

Spherical LiFe1−xCrxBO3/C (x = 0, 0.005, 0.008) has been successfully synthesized by ball-milling and spray-drying assisted high-temperature solid-state reaction.

Structure and microwave dielectric characteristics of Sr(La1−xSmx)2Al2O7 ceramics

RSC Advances ◽  
2016 ◽  
Vol 6 (98) ◽  
pp. 96229-96236 ◽  
Author(s):  
Zhi Qi Yuan ◽  
Bing Liu ◽  
Xiao Qiang Liu ◽  
Xiang Ming Chen
Keyword(s):  
Phase Composition ◽  
Solid State ◽  
Solid State Reaction ◽  
Solid State Reaction Method ◽  
Densification Behavior ◽  
Dielectric Characteristics ◽  
Reaction Method ◽  
Microwave Dielectric

Sr(La1−xSmx)2Al2O7 (0 ≤ x ≤ 1) ceramics were synthesized by a standard solid-state reaction method, and the microwave dielectric characteristics were investigated together with the densification behavior, microstructure and phase composition.

A Rational Way to Prepare BaTiO3 Ceramics

2012 ◽  
Vol 535-537 ◽  
pp. 797-800
Author(s):  
Liang Luo ◽  
Yan Jun Zhu ◽  
Ling Ling Song ◽  
Xiao Bo Zhang
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Phase Composition ◽  
Solid State ◽  
Field Emission ◽  
Solid State Reaction ◽  
X Ray Diffraction ◽  
One Pot ◽  
X Ray ◽  
Scanning Electron

A facile one-pot hydrothermal method has been developed for synthesis of porous and non-porous BaTiO3 ceramics using Ba(OH)2.8H2O, BaCO3 as barium source. In this paper, we research the effect of different barium source on the nanostructure of BaTiO3 ceramics in a solid state reaction, and the results indicated that the two different morphologies of BaTiO3 ceramics can be easily prepared by using these two different barium source. The phase composition and morphology of the as-obtained products were investigated by X-ray diffraction and field emission scanning electron microscopy (SEM).

Sign in / Sign up

Export Citation Format

Share Document