Results 41 to 50 of about 19,778 (262)

Simulation of vacuum arc cathode spot movement between transverse magnetic field contacts

AIP Advances, 2021
Vacuum switches have been extensively used in the field of medium voltage. Carrying out relevant research on vacuum arc is particularly important for improving the performance and reliability of vacuum switches. The vacuum arc cathode spots provide metal
Hao Jing, Junfei Yang, Xianhai Pang, Shixin Xiu   +3 more
doaj   +1 more source

Microstructure Reconstruction in Battery Electrodes Using Machine Learning Based on Low‐Voltage Focused Ion Beam–Scanning Electron Microscopy Tomography Images

Advanced Engineering Materials, EarlyView.
Low‐voltage FIB‐SEM tomography combined with a image preprocessing pipeline improves phase contrast and enables reliable machine‐learning segmentation of conductive networks in lithium‐ion battery electrodes. Structural descriptors are extracted from segmented images, done semimanually and automated, and compared.
Lisa Beran, Vincent Nebel, Dominik Perius, Kshitij Kumar, Yannis Heim, Laura Bies, Tobias Kraus   +6 more
wiley   +1 more source

MECHANISM ANALYSIS AND EXPERIMENTAL STUDY OF VACUUM ARC WELDING EQUIPMENT

Jixie qiangdu, 2017
There is no uniform standard for determining the parameters of the key factors in the process of vacuum arc brazing. The parameters of the vacuum arc welding equipment are determined by the experience.
MAO Jun, XIE ChunXue, XIE Miao, LIU ZhiXiang   +3 more
doaj  

Influence of Si Content and Milling Duration on the Microstructure and Mechanical–Tribological Properties of AlCoCrFeNiSi High‐Entropy Alloys

Advanced Engineering Materials, EarlyView.
Si‐doped AlCoCrFeNi high‐entropy alloys are synthesized by mechanical alloying to reveal the effect of Si content and milling time on phase evolution, microstructural refinement, and tribological behavior. A transition from FCC to BCC structure, significant grain refinement, and enhanced hardness and wear resistance are achieved, with the 4 at% Si ...
Mustafa Okumuş, Mehmet Emin Demir, Sercan Özpınar   +2 more
wiley   +1 more source

Distribution Characteristics of Inclusions in GH4742 Superalloy Ingot by Vacuum Arc Remelting [PDF]

Teshugang
A ϕ570 mm alloy ingot was utilized as the electrode for vacuum arc remelting， and a ϕ660 mm vacuum arc remelting ingot was prepared through the three stages of arc initiation， stabilized melting， and thermal capping. The melting process lasted a total of
Yang　Shulei, Wang　Xiwei, Tian　Qiang, Wang　Tiantian, Yang　Shufeng
doaj   +1 more source

Electrified Damage in Motion Systems

Advanced Engineering Materials, EarlyView.
The electrified damage in motion systems is a fundamental framework presenting the degradation pathway arising from the coupling of electrical energy transport with mechanical contact and interfacial chemistry. The framework positions electrified damage as a distinct degradation regime with unique characteristic surface morphologies and failures of ...
M. Humaun Kabir, Angelina Nguyen, Hong Liang   +2 more
wiley   +1 more source

Modeling of CuCr contact vacuum arc with consideration of its components

AIP Advances, 2018
This paper involves the simulation of vacuum arc under composite (CuCr) contact. A three dimensional model is developed and we have considered the ionization process as well as recombination in the vacuum arc.
Jie Deng, Lijun Wang, Xiao Zhang, Ze Yang, Shenli Jia   +4 more
doaj   +1 more source

Biomass Native Structure Into Functional Carbon‐Based Catalysts for Fenton‐Like Reactions

Advanced Functional Materials, EarlyView.
This study indicates that eight biomasses with 2D flaky and 1D acicular structures influence surface O types, morphology, defects, N doping, sp2 C, and Co nanoparticles loading in three series of carbon, N‐doped carbon, and cobalt/graphitic carbon. This work identifies how these structural factors impact catalytic pathways, enhancing selective electron
Wenjie Tian, Jingkai Lin, Zhihao Tian, Selusiwe Ncube, Huayang Zhang, Emiliano Cortés, Hongqi Sun, Shaobin Wang   +7 more
wiley   +1 more source

Full-scale simulation of high-current vacuum arc in vacuum interrupter under axial magnetic field

AIP Advances
Most existing studies on vacuum arcs confine the arc to the space directly between the electrodes. Contacts are often slotted to facilitate magnetic field control of the arc, thereby artificially restricting the arc-burning zone and overlooking the ...
Yueran Liu, Shuangwei Zhao, Xiaolong Huang, Qiang Zhang, Yanmin Liu, Shenli Jia   +5 more
doaj   +1 more source

Plasma instability of a vacuum arc centrifuge

Physical Review E, 2002
Ever since conception of the vacuum arc centrifuge in 1980, periodic fluctuations in the ion saturation current and floating potential have been observed in Langmuir probe measurements in the rotation region of a vacuum arc centrifuge. In this work we develop a linearized theoretical model to describe a range of instabilities in the vacuum arc ...
M J, Hole, R S, Dallaqua, S W, Simpson, E, Del Bosco   +3 more
openaire   +3 more sources