Effect of partial nitrogen pressure on the transport number of solid electrolyte with composition AIN-Y2O3

1996 ◽  
Vol 34 (3-4) ◽  
pp. 176-178
Author(s):  
B. V. Linchevskii ◽  
Yu. V. Tarakanov ◽  
A. L. Sobolevskii ◽  
O. V. Chernyshev ◽  
V. M. Piskovets ◽  
...  
Keyword(s):  
Solid Electrolyte ◽  
Transport Number ◽  
Nitrogen Pressure ◽  
Partial Nitrogen Pressure

Multiscale Modeling of Uranium Mononitride: Point Defects Diffusion, Self-Diffusion, Phase Composition

2017 ◽  
Vol 375 ◽  
pp. 101-113 ◽  
Author(s):  
Sergey Starikov ◽  
Alexey Kuksin ◽  
Daria Smirnova ◽  
Alexey Dolgodvorov ◽  
Vladimir Ozrin
Keyword(s):  
Nuclear Fuel ◽  
Point Defects ◽  
Atomistic Simulation ◽  
Nitrogen Pressure ◽  
Computational Approach ◽  
Self Diffusion ◽  
Partial Nitrogen Pressure ◽  
Diffusion Phase ◽  
Fuel Behavior ◽  
Uranium Mononitride

Multiscale computational approach is used to evaluate microscopic parameters for description of nitride nuclear fuel. The results of atomistic simulation and thermodynamic modeling allow to estimate diffusivity and concentrations of point defects at various stoichiometric ratios of UN1+x. The diffusivities of Xe atom were calculated in various equilibrium states. In addition, we obtained the dependence of partial nitrogen pressure on x and temperature. The results of atomistic simulation were used for modeling of nuclear fuel behavior with use of mechanistic fuel codes.

scholarly journals Mathematical Model of Prediction of Nitrogen Pickup in Nitriding Process of Low Carbon Ferromanganese

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Saeed Ghali
Keyword(s):  
Mathematical Model ◽  
Nitrogen Content ◽  
Weight Percent ◽  
Nitrogen Pressure ◽  
Nitriding Process ◽  
Low Carbon ◽  
Good Tool ◽  
Partial Nitrogen Pressure ◽  
Temperature Time ◽  
Good Agreement

Low carbon ferromanganese was nitrided through gas-solid reaction. The nitriding process has been carried out on lab scale at temperature range 800°C–950°C at different nitrogen pressures. Temperature, time, and partial nitrogen pressure of nitriding process of fine low carbon ferromanganese were investigated. Nitrogen content, in weight percent, was more than 9%. MATLAB software was used to derive mathematical model to predict nitrogen content as a function of temperature and nitrogen pressure. According to derived model, nitrogen content can be calculated by the following equation: N content,wt.%=(-30.8882+0.0326*T)/(1+e-((P+0.0038*T-8.4155)/(3.6374-0.0018*T))), where, T is nitriding temperature in K and P is nitrogen pressure in bar. The experimental results are in good agreement with the predicted results. The results showed that nitrogen content, at steady state, is mainly depending on temperature and pressure of nitriding process. MATLAB is a good tool to make precision mathematical model.

scholarly journals Особенности микроструктуры и свойств многоэлементных нитридных покрытий на основе TiZrNbAlYCr

2018 ◽  
Vol 44 (3) ◽  
pp. 25
Author(s):  
А.Д. Погребняк ◽  
В.М. Береснев ◽  
О.В. Бондар ◽  
Я.О. Кравченко ◽  
Б. Жоллыбеков ◽  
...  
Keyword(s):  
Nitrogen Pressure ◽  
Lattice Period ◽  
Cathodic Arc Deposition ◽  
Composition Variation ◽  
Constant Bias ◽  
Partial Nitrogen Pressure ◽  
Two Phases ◽  
Fcc Phase ◽  
Bcc Phase ◽  
Cathodic Arc

AbstractMulticomponent nanostructured coatings based on (TiZrNbAlYCr)N with a hardness as high as 47 GPa were obtained by cathodic arc deposition. The effect of partial nitrogen pressure P _N (with constant bias potential U _ b =–200 V applied to the substrate) on the phase-composition variation, the size of crystallites, and their relation to the microstructure and hardness was investigated. An increase in the nitrogen pressure resulted in the formation of two phases with characteristic BCC (the lattice period is 0.342 nm) and FCC lattices with averaged nanocrystallite sizes of 15 and 2 nm. At a high pressure of 0.5 Pa, crystallites in the FCC phase with a lattice period of 0.437 nm grew in size to ~7 nm. The hardness of deposited coatings with larger (3.5 nm) FCC-phase crystallites and smaller (7 nm) BCC-phase crystallites was enhanced considerably.

An Impedancemetric Micro NO2 Sensor Using Oxide and Solid-Electrolyte Thin-Films

2020 ◽  
Vol 140 (11) ◽  
pp. 305-308
Author(s):  
Tsuyoshi Sakai ◽  
Satoko Takase ◽  
Youichi Shimizu
Keyword(s):  
Thin Films ◽  
Solid Electrolyte

Rational Design of Quasi Zero-Strain NCM Cathode Materials for Minimizing Volume Change Effects in All-Solid-State Batteries

2019 ◽  
Author(s):  
Florian Strauss ◽  
Lea de Biasi ◽  
A-Young Kim ◽  
Jonas Hertle ◽  
Simon Schweidler ◽  
...  
Keyword(s):  
Solid State ◽  
Solid Electrolyte ◽  
Cathode Materials ◽  
Rational Design ◽  
Electrode Materials ◽  
Cycling Performance ◽  
Mechanical Degradation ◽  
Volume Changes ◽  
Solid State Batteries ◽  
All Solid State Batteries

Measures to improve the cycling performance and stability of bulk-type all-solid-state batteries (SSBs) are currently being developed with the goal of substituting conventional Li-ion battery (LIB) technology. As known from liquid electrolyte based LIBs, layered oxide cathode materials undergo volume changes upon (de)lithiation, causing mechanical degradation due to particle fracture, among others. Unlike solid electrolytes, liquid electrolytes are somewhat capable of accommodating morphological changes. In SSBs, the rigidity of the materials used typically leads to adverse contact loss at the interfaces of cathode material and solid electrolyte during cycling. Hence, designing zero- or low-strain electrode materials for application in next-generation SSBs is desirable. In the present work, we report on novel Co-rich NCMs, NCM361 (60% Co) and NCM271 (70% Co), showing minor volume changes up to 4.5 V vs Li<sup>+</sup>/Li, as determined by <i>operando</i> X-ray diffraction and pressure measurements of LIB pouch and pelletized SSB cells, respectively. Both cathode materials exhibit good cycling performance when incorporated into SSB cells using argyrodite Li<sub>6</sub>PS<sub>5</sub>Cl solid electrolyte, albeit their morphology and secondary particle size have not yet been optimized.

Rational Design of Quasi Zero-Strain NCM Cathode Materials for Minimizing Volume Change Effects in All-Solid-State Batteries

2019 ◽  
Author(s):  
Florian Strauss ◽  
Lea de Biasi ◽  
A-Young Kim ◽  
Jonas Hertle ◽  
Simon Schweidler ◽  
...  
Keyword(s):  
Solid State ◽  
Solid Electrolyte ◽  
Cathode Materials ◽  
Rational Design ◽  
Electrode Materials ◽  
Cycling Performance ◽  
Mechanical Degradation ◽  
Volume Changes ◽  
Solid State Batteries ◽  
All Solid State Batteries

Measures to improve the cycling performance and stability of bulk-type all-solid-state batteries (SSBs) are currently being developed with the goal of substituting conventional Li-ion battery (LIB) technology. As known from liquid electrolyte based LIBs, layered oxide cathode materials undergo volume changes upon (de)lithiation, causing mechanical degradation due to particle fracture, among others. Unlike solid electrolytes, liquid electrolytes are somewhat capable of accommodating morphological changes. In SSBs, the rigidity of the materials used typically leads to adverse contact loss at the interfaces of cathode material and solid electrolyte during cycling. Hence, designing zero- or low-strain electrode materials for application in next-generation SSBs is desirable. In the present work, we report on novel Co-rich NCMs, NCM361 (60% Co) and NCM271 (70% Co), showing minor volume changes up to 4.5 V vs Li<sup>+</sup>/Li, as determined by <i>operando</i> X-ray diffraction and pressure measurements of LIB pouch and pelletized SSB cells, respectively. Both cathode materials exhibit good cycling performance when incorporated into SSB cells using argyrodite Li<sub>6</sub>PS<sub>5</sub>Cl solid electrolyte, albeit their morphology and secondary particle size have not yet been optimized.

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