Results 41 to 50 of about 66,524 (310)

Affecting the Properties of Copper–Graphene Electroconductive Composite by Severe Plastic Deformation

Advanced Engineering Materials, EarlyView.
Copper‐based composites enhanced with carbon feature convenient mechanical properties and favorable electric conductivity. Processing via deformation and thermomechanical treatments can introduce advantageous microstructures further enhancing their performance. Herein, copper–graphene powder‐based composites are directly consolidated via rotary swaging
Radim Kocich, Lenka Kunčická, Pavel Czernek, Zifan Wang   +3 more
wiley   +1 more source

Failure mechanisms of polyimide and perfluoroalkoxy films under high frequency pulses [PDF]

, 2010
Breakdown behaviors of polyimide and perfluoroalkoxy high temperature films under unipolar and bipolar repetitive pulses are investigated. A bipolar 20kV, 20 kHz and fast dV/dt pulse generator has been designed and built to study the impact of pulse ...
Yin, Weijun, Fengfeng Tao, Schweickart, Daniel, Daniel Schweickart, George Chen, Tao, Fengfeng, Zhao, Junwei, Junwei Zhao, Weijun Yin, Chen, George   +9 more
core   +1 more source

Electrical Discharge Triggered Breakdown Phenomena in Main Gap

International Journal of Electrical Engineering and Applied Sciences, 2018
In high-voltage techniques, electrical discharges represent complex problem. The results of the research on the breakdown phenomena in high voltage electrical apparatus insulated by gas can be employed to obtain external and internal insulation design ...
abderrahmane settaouti
doaj  

Effect of temperature on the electrical breakdown strength of insulating oils [PDF]

EPJ Web of Conferences
The aim of the paper is to analyse the effect of temperature on the electrical breakdown strength of transformer oils and to compare the behaviour of the mineral oil Mogul Trafo CZ-A with the synthetic oil Shell Diala S4 ZX-I.
Zbojovský Ján, Cimbala Roman, Kurimský Juraj, Király Jozef   +3 more
doaj   +1 more source

Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys

Advanced Engineering Materials, EarlyView.
Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak, Olha Zvirko, Rostyslav Leshchak, Hryhoriy Nykyforchyn   +3 more
wiley   +1 more source

Impact of the surface roughness on the electrical capacitance [PDF]

, 2006
A new hybrid approach consists to use the advantages of both systems namely the high geometric aspects of the electrodes of the ultracapacitor and the high dielectric strength of polymer materials used in dielectric capacitors.
Flahaut, Emmanuel, Albina, A., Albina, Audrey, Lebey, Thierry, Simon, Patrice, Cambronne, Jean-Pascal, Taberna, Pierre-Louis   +6 more
core   +1 more source

Amorphized length and variability in phase-change memory line cells

Beilstein Journal of Nanotechnology, 2020
The dimensions of amorphized regions in phase-change memory cells are critical parameters to design devices for different applications. However, these dimensions are difficult to be determined by direct imaging.
Nafisa Noor, Sadid Muneer, Raihan Sayeed Khan, Anna Gorbenko, Helena Silva   +4 more
doaj   +1 more source

Slip Localization Intensification Mediated by Grain Boundary Sliding in a Polycrystalline Nickel‐Based Superalloy

Advanced Engineering Materials, EarlyView.
The temperature dependence of fatigue behavior in nickel‐based superalloys is investigated through high‐resolution measurements of plastic localization. While increasing temperature reduces localization and enhances fatigue performance in René 88DT, Inconel 718 exhibits a sharp degradation at intermediate temperature due to intensified slip ...
M. Calvat, D. Anjaria, I. Woo, C. Bean, D. Texier, J. C. Stinville   +5 more
wiley   +1 more source

Application of the catastrophe theory to describe temperature dependencies of the breakdown field strength in polymer dielectrics

St. Petersburg Polytechnical University Journal: Physics and Mathematics
An equation expressing the dependence of the breakdown field strength of polymer dielectrics on ambient temperature has been derived based on the hypothesis of an analogy between the physical phenomenon of breakdown and the mathematical cusp catastrophe.
Kiselevich Valentin
doaj   +1 more source

Tailoring Functional Properties of Ti–Ni–Cu Shape Memory Alloy Thin Films for MEMS Actuators

Advanced Engineering Materials, EarlyView.
A comprehensive study of critical parameters required to develop well‐performing Ti–Ni–Cu thin film shape memory alloy microactuators is provided. Materials science and device integration aspects are integrated by addressing structural and physical relationships using complementary characterization techniques as well as a practical fabrication solution
Elaheh Akbarnejad, Aleksander Kostka, Gowtham Arivanandhan, Yujiao Li, Alan Savan, Manfred Kohl, Alfred Ludwig   +6 more
wiley   +1 more source