Electric field - Flash temperature relationship in liquid-film assisted flash sintering of ceramic nanoparticles

2020 ◽  
Vol 187 ◽  
pp. 4-7
Author(s):  
Rachman Chaim
Keyword(s):  
Electric Field ◽  
Liquid Film ◽  
Temperature Relationship ◽  
Flash Temperature ◽  
Ceramic Nanoparticles ◽  
Flash Sintering

scholarly journals Effects of Flash Sintering Parameters on Performance of Ceramic Insulator

Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 1157
Author(s):  
Yong Liu ◽  
Xingwang Huang
Keyword(s):  
Grain Size ◽  
Electric Field ◽  
Field Intensity ◽  
Current Density ◽  
Electric Field Intensity ◽  
Unit Cell ◽  
Uniform Structure ◽  
Ceramic Insulator ◽  
Flash Sintering ◽  
Ceramic Insulators

Ceramic outdoor insulators play an important role in electrical insulation and mechanical support because of good chemical and thermal stability, which have been widely used in power systems. However, the brittleness and surface discharge of ceramic material greatly limit the application of ceramic insulators. From the perspective of sintering technology, flash sintering technology is used to improve the performance of ceramic insulators. In this paper, the simulation model of producing the ceramic insulator by the flash sintering technology was set up. Material Studio was used to study the influence of electric field intensity and temperature on the alumina unit cell. COMSOL was used to study the influence of electric field intensity and current density on sintering speed, density and grain size. Obtained results showed that under high temperature and high voltage, the volume of the unit cell becomes smaller and the atoms are arranged more closely. The increase of current density can result in higher ceramic density and larger grain size. With the electric field intensity increasing, incubation time shows a decreasing tendency and energy consumption is reduced. Ceramic insulators with a higher uniform structure and a smaller grain size can show better dielectric performance and higher flashover voltage.

Electric field-assisted flash sintering of CaCu3Ti4O12: Microstructure characteristics and dielectric properties

2016 ◽  
Vol 682 ◽  
pp. 753-758 ◽  
Author(s):  
Lílian Menezes Jesus ◽  
Ronaldo Santos Silva ◽  
Rishi Raj ◽  
Jean-Claude M’Peko
Keyword(s):  
Dielectric Properties ◽  
Electric Field ◽  
Microstructure Characteristics ◽  
Flash Sintering

scholarly journals Contactless electric–field driven Z-alignment of ceramic nanoparticles in polymer electrolyte to enhance ionic conductivity

2020 ◽  
Vol 192 ◽  
pp. 108753
Author(s):  
Jiyan Liu ◽  
Wei Fang ◽  
Shuyu Gao ◽  
Yuwei Chen ◽  
Shaoyun Chen ◽  
...  
Keyword(s):  
Ionic Conductivity ◽  
Electric Field ◽  
Polymer Electrolyte ◽  
Ceramic Nanoparticles

Effect of External Electric Field on Diffusivity and Flash Sintering of 8ysz: A Molecular Dynamics Study

2020 ◽  
Author(s):  
Wenwu Xu ◽  
Andrey Maksymenko ◽  
Shahrier Hasan ◽  
Juan J. Meléndez ◽  
Eugene Olevsky
Keyword(s):  
Molecular Dynamics ◽  
Electric Field ◽  
External Electric Field ◽  
Flash Sintering

Experimental study on liquid metal free surface flow under magnetic and electric field for nuclear fusion

2022 ◽  
Author(s):  
Xu Meng ◽  
Z H Wang ◽  
Dengke Zhang
Keyword(s):  
Magnetic Field ◽  
Free Surface ◽  
Liquid Metal ◽  
Electric Field ◽  
Liquid Film ◽  
Metal Flow ◽  
First Wall ◽  
Flowing Liquid ◽  
Liquid Metal Flow ◽  
The Magnetic Field

Abstract In the future application of nuclear fusion, the liquid metal flows are considered to be an attractive option of the first wall of the Tokamak which can effectively remove impurities and improve the confinement of plasma. Moreover, the flowing liquid metal can solve the problem of the corrosion of the solid first wall due to high thermal load and particle discharge. In the magnetic confinement fusion reactor, the liquid metal flow experiences strong magnetic and electric, fields from plasma. In the present paper, an experiment has been conducted to explore the influence of electric and magnetic fields on liquid metal flow. The direction of electric current is perpendicular to that of the magnetic field direction, and thus the Lorentz force is upward or downward. A laser profilometer (LP) based on the laser triangulation technique is used to measure the thickness of the liquid film of Galinstan. The phenomenon of the liquid column from the free surface is observed by the high-speed camera under various flow rates, intensities of magnetic field and electric field. Under a constant external magnetic field, the liquid column appears at the position of the incident current once the external current exceeds a critical value, which is inversely proportional to the magnetic field. The thickness of the flowing liquid film increases with the intensities of magnetic field, electric field, and Reynolds number. The thickness of the liquid film at the incident current position reaches a maximum value when the force is upward. The distribution of liquid metal in the channel presents a parabolic shape with high central and low marginal. Additionally, the splashing, i.e., the detachment of liquid metal is not observed in the present experiment, which suggests a higher critical current for splashing to occur.

Densification of Y2O3 by flash sintering under an AC electric field

2021 ◽  
Author(s):  
Kohta Nambu ◽  
Koji Morita ◽  
Kohei Soga ◽  
Takahisa Yamamoto ◽  
Hiroshi Masuda ◽  
...  
Keyword(s):  
Electric Field ◽  
Ac Electric Field ◽  
Flash Sintering

Mechanism of flash sintering with high electric field: In the view of electric discharge and breakdown

2020 ◽  
Vol 187 ◽  
pp. 93-96
Author(s):  
Jieming Liu ◽  
Huang Rongxia ◽  
Ruobing Zhang ◽  
Guanghua Liu ◽  
Xilin Wang ◽  
...  
Keyword(s):  
Electric Field ◽  
Electric Discharge ◽  
High Electric Field ◽  
Flash Sintering
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