Conductivity activation energy and analysis of the sintering process of dielectric ceramics

1998 ◽  
Vol 36 (5-6) ◽  
pp. 290-293 ◽  
Author(s):  
Jean-Claude M'Peko ◽  
A.Rabdel Ruiz-Salvador ◽  
Gerardo Rodrı́guez-Fuentes
Keyword(s):  
Activation Energy ◽  
Sintering Process ◽  
Conductivity Activation Energy ◽  
Dielectric Ceramics

Crystallization of Zn-rich and P-rich amorphous Zn3P2 thin films

1988 ◽  
Vol 66 (5) ◽  
pp. 373-375 ◽  
Author(s):  
C. J. Arsenault ◽  
D. E. Brodie
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Activation Energy ◽  
Electrical Properties ◽  
Structural Properties ◽  
Crystallization Process ◽  
X Ray Diffraction ◽  
Electrical Measurements ◽  
Conductivity Activation Energy ◽  
X Ray

Zn-rich and P-rich amorphous Zn3P2 thin films were prepared by co-evaporation of the excess element during the normal Zn3P2 deposition. X-ray diffraction techniques were used to investigate the structural properties and the crystallization process. Agglomeration of the excess element within the as-made amorphous Zn3P2 thin film accounted for the structural properties observed after annealing the sample. Electrical measurements showed that excess Zn reduces the conductivity activation energy and increases the conductivity, while excess P up to 15 at.% does not alter the electrical properties significantly.

scholarly journals Master sintering curve: A practical approach to its construction

2010 ◽  
Vol 42 (1) ◽  
pp. 25-32 ◽  
Author(s):  
V. Pouchly ◽  
K. Maca
Keyword(s):  
Activation Energy ◽  
Practical Method ◽  
Practical Approach ◽  
Particle Sizes ◽  
Sintering Process ◽  
Cubic Zirconia

The concept of a Master Sintering Curve (MSC) is a strong tool for optimizing the sintering process. However, constructing the MSC from sintering data involves complicated and time-consuming calculations. A practical method for the construction of a MSC is presented in the paper. With the help of a few dilatometric sintering experiments the newly developed software calculates the MSC and finds the optimal activation energy of a given material. The software, which also enables sintering prediction, was verified by sintering tetragonal and cubic zirconia, and alumina of two different particle sizes.

Influence of B2O3 on Dielectric, Mechanical, and Thermal Properties of MgO-Al2O3-SiO2 Glass-Ceramics

2019 ◽  
Vol 821 ◽  
pp. 435-439
Author(s):  
Bo Li ◽  
Ke Jing ◽  
Hai Bo Bian
Keyword(s):  
Activation Energy ◽  
Thermal Expansion ◽  
Thermal Properties ◽  
Low Temperature ◽  
Flexural Strength ◽  
Glass Ceramic ◽  
Glass Ceramics ◽  
Mechanical And Thermal Properties ◽  
Sintering Process ◽  
Low Thermal Expansion

Low temperature sintered MgO-Al2O3-SiO2 glass-ceramic with high mechanical and low thermal expansion was prepared for package. The remarkable influence of B2O3 addition on the electrical, mechanical, and thermal properties was fully investigated. A small amount of B2O3 promoted the sintering process and improved the densification of MAS. The kinetics via Kissinger method indicated that an appropriate B2O3 content decreased the activation energy and helped the occurrence of crystallization. Due to the increase of crystallinity and indialite phase, B2O3 addition significantly enhanced flexural strength and Young’s modulus. MAS doped with 3wt% B2O3 can be sintered at 900 °C and obtained good properties: σ = 229 MPa, φ = 86 GPa, α = 1.66×10-6 /°C, εr = 5.29, and tanδ = 5.9×10-4.

Measurements of Light-Induced Degradation in A-Si, Ge:H, F Alloys,

1986 ◽  
Vol 70 ◽  
Author(s):  
J. Kolodzey ◽  
S. Aljishi ◽  
Z E. Smith ◽  
V. Chu ◽  
R. Schwarz ◽  
...  
Keyword(s):  
Activation Energy ◽  
Electronic Properties ◽  
Dark Conductivity ◽  
Narrow Gap ◽  
Conductivity Activation Energy ◽  
Optical And Electronic Properties ◽  
Amorphous Si

ABSTRACTThe effects of illumination on the optical and electronic properties of narrow gap hydrogenated and fluorinated amorphous Si-Ge (a-Si1-xGex:H, F) alloys have been evaluated. A series of alloys with optical gaps ranging from 1.30 eV to 1.64 eV has been light soaked at ∼1 sun intensity for 354 hours. Measurements of sub-gap absorption, photo- and dark conductivities and dark conductivity activation energy were made on alloys in the annealed and the light-soaked states. The results indicate that samples with optical gaps ≳ 1.4 eV degrade significantly. The 1.3 eV sample shows no degradation in its optical or electronic properties except for a factor of 5 increase in the dark conductivity.

scholarly journals Исследование механизмов уплотнения нанопорошков скуттерудитов CoSb-=SUB=-3-=/SUB=- в процессе активированного полем спекания

2020 ◽  
Vol 46 (18) ◽  
pp. 45
Author(s):  
А.С. Тукмакова ◽  
Д.Б. Щеглова ◽  
А.П. Новицкий ◽  
А.И. Воронин ◽  
В.В. Ховайло ◽  
...  
Keyword(s):  
Activation Energy ◽  
Finite Element Method ◽  
Material Parameter ◽  
Rate Sensitivity ◽  
Grain Boundary Sliding ◽  
Creep Model ◽  
Creep Process ◽  
Sintering Process ◽  
The Finite Element Method ◽  
Boundary Sliding

The densification parameters have been calculated for CoSb3 nanopowders treated within the field activated sintering. We have obtained the values of creep activation energy, strain rate sensitivity exponent and material parameter that characterize the creep process. It is concluded that densification of CoSb3 is due to the grain boundary sliding based creep. The simulation of the sintering process has been carried out using the finite element method; the change of sample sizes due to densification has been calculated using the creep model. The conformity between simulation and experimental results has been shown.

scholarly journals MEMBRANES BASED ON ACID-DOPED TRIAZOLE POLYMERS

2020 ◽  
Vol 2020 (1) ◽  
pp. 27-28
Author(s):  
Yuliya Verhozina ◽  
Yuriy Pozhidaev
Keyword(s):  
Activation Energy ◽  
Nmr Spectroscopy ◽  
Thermogravimetric Analysis ◽  
Exchange Capacity ◽  
Conductivity Activation Energy ◽  
Acid Base ◽  
Ion Exchange Capacity ◽  
Ir And Nmr Spectroscopy ◽  
Composition And Structure ◽  
Base Method

The composition and structure of the membrane based on the acid-base method of elemental analysis, IR and NMR spectroscopy were studied. The ion-exchange capacity, proton conductivity, activation energy, and thermogravimetric analysis of the resulting membranes were studied.

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