Correlation of La0.8Sr0.2MnO3-δ Powder Synthesis Routes and High Temperature Electrical Properties

2019 ◽  
Vol 7 (1) ◽  
pp. 1165-1171
Author(s):  
Matthew. J. Creedon ◽  
Yi Yang ◽  
Chandra S. Khadilkar ◽  
Aziz Shaikh
Keyword(s):  
High Temperature ◽  
Electrical Properties ◽  
Powder Synthesis ◽  
Synthesis Routes

Sintering and Microstructure - Property Relations for YBa2Cu3Ox

1987 ◽  
Vol 99 ◽  
Author(s):  
R. K. Bordia ◽  
H. S. Horowitz ◽  
M. A. Subramanian ◽  
J. B. Michel ◽  
E. M. McCarron ◽  
...  
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Electrical Properties ◽  
High Temperature Superconductivity ◽  
Microstructural Characterization ◽  
Densification Behavior ◽  
Property Relations ◽  
Synthesis Routes ◽  
Intense Activity ◽  
Solution Routes

The recent discovery of high temperature superconductivity in YBa2Cu3O7 has led to intense activity in the processing of these oxides. The earliest attempts to synthesize these materials were based on solid state routes. These routes do not produce highly sinterable powders. Solution routes can potentially produce much more sinterable powders. We have investigated several synthesis routes - both solid state and solution. The details of these will be presented elsewhere(1). Here, we contrast the physical properties and the densification behavior of powders made via solid state and solution routes. We also present preliminary results on the microstructural characterization and electrical properties of the sintered samples.

Study of the electrical properties of  Cz p-type solar-grade silicon wafers against the high-temperature processes

2021 ◽  
Vol 127 (6) ◽  
Author(s):  
Mohamed Maoudj ◽  
Djoudi Bouhafs ◽  
Nacer Eddine Bourouba ◽  
Abdelhak Hamida-Ferhat ◽  
Abdelkader El Amrani
Keyword(s):  
High Temperature ◽  
Electrical Properties ◽  
Silicon Wafers ◽  
Solar Grade Silicon ◽  
High Temperature Processes ◽  
Grade Silicon ◽  
P Type

Polyimide Copolymers Containing Various Levels Of The 6F Moiety For High Temperature And Microelectronic Applications

1991 ◽  
Vol 227 ◽  
Author(s):  
M. Haider ◽  
E. Chenevey ◽  
R. H. Vora ◽  
W. Cooper ◽  
M. Glick ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Electrical Properties ◽  
Oxidative Stability ◽  
Trifluoromethyl Group ◽  
Thermal And Mechanical Properties

ABSTRACTTrifluoromethyl group-containing polyimides not only show extraordinary electrical properties, but they also exhibit excellent long-term thermo-oxidative stability. Among the most thermomechanically stable structural polyimides are those from 6F dianhydride (6FDA) and 6F diamines. The effects of substituting non-fluorine containing monomers such as BTDA, mPDA and 4,4′-DADPS for the hexafluoroisopropylidene monomers on the dielectric, thermo-oxidative, thermal and mechanical properties of the copolymers were studied.

scholarly journals Temperature Dependence of Mechanical, Electrical Properties and Crystal Structure of Polyethylene Blends for Cable Insulation

Materials ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 1922 ◽  
Author(s):  
Lunzhi Li ◽  
Lisheng Zhong ◽  
Kai Zhang ◽  
Jinghui Gao ◽  
Man Xu
Keyword(s):  
High Temperature ◽  
Electrical Properties ◽  
Temperature Dependence ◽  
Elevated Temperatures ◽  
Breakdown Strength ◽  
Temperature Stability ◽  
Xrd Analysis ◽  
Insulation Material ◽  
Cable Insulation ◽  
Polyethylene Blends

There is a long-standing puzzle concerning whether polyethylene blends are a suitable substitution for cable-insulation-used crosslinking polyethylene (XLPE) especially at elevated temperatures. In this paper, we investigate temperature dependence of mechanical, electrical properties of blends with 70 wt % linear low density polyethylene (LLDPE) and 30 wt % high density polyethylene (HDPE) (abbreviated as 70 L-30 H). Our results show that the dielectric loss of 70 L-30 H is about an order of magnitude lower than XLPE, and the AC breakdown strength is 22% higher than XLPE at 90 °C. Moreover, the dynamic mechanical thermal analysis (DMA) measurement and hot set tests suggest that the blends shows optimal mechanical properties especially at high temperature with considerable temperature stability. Further scanning electron microscope (SEM) observation and X-ray diffraction (XRD) analysis uncover the reason for the excellent high temperature performance and temperature stability, which can be ascribed to the uniform fine-spherulite structure in 70 L-30 H blends with high crystallinity sustaining at high temperature. Therefore, our findings may enable the potential application of the blends as cable insulation material with higher thermal-endurance ability.

Fabrication and electrical properties of polymer-derived ceramic (PDC) thin films for high-temperature heat flux sensors

2011 ◽  
Vol 165 (2) ◽  
pp. 250-255 ◽  
Author(s):  
Duckbong Seo ◽  
Sunghoon Jung ◽  
Stephen J. Lombardo ◽  
Z.C. Feng ◽  
J.K. Chen ◽  
...  
Keyword(s):  
Thin Films ◽  
Heat Flux ◽  
High Temperature ◽  
Electrical Properties ◽  
Heat Flux Sensors ◽  
Polymer Derived Ceramic ◽  
Temperature Heat

Characterization of YBa2Cu4O8 high temperature electrical properties and thermodynamic stability

1991 ◽  
Vol 6 (10) ◽  
pp. 2054-2058 ◽  
Author(s):  
B-S. Hong ◽  
T.O. Mason
Keyword(s):  
High Temperature ◽  
Electrical Property ◽  
Electrical Properties ◽  
Seebeck Coefficient ◽  
Oxygen Partial Pressure ◽  
Partial Pressure ◽  
Pressure Range ◽  
Stability Range

Via in situ electrical property measurements (conductivity, Seebeck coefficient) over the temperature range 500–800 °C and oxygen partial pressure range 10−4-1 atm, the equilibrium transport properties and stability range of YBa2Cu4O8 were determined. YBa2Cu4O8 behaves like the intrinsically mixed-valent compound, magnetite (Fe3O4), with small variations in electrical properties with changes in oxygen partial pressure. The decomposition boundary to YBa2Cu3O6+y (or YBa2Cu3.5O7.5±z) and CuO occurs at log(po2, atm) = −1.24 × 104/T(K) + 11.01(773 ⋚ T(K) ⋚ 1073).

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