Results 61 to 70 of about 117,127 (343)

Experiment investigation on vacuum arc of AMF contacts under different materials

AIP Advances, 2018
In this paper, the arc characteristics of cup-shaped AMF contacts in vacuum arc experiments under different materials was studied. The experiment was conducted in a detachable vacuum chamber with a gas pressure of 10-4Pa. The arc voltage and current were
Renjie Lin, Lijun Wang, Jinwei Ma, Weixin Shi, Jie Deng, Shenli Jia   +5 more
doaj   +1 more source

Vulnerability of the agricultural sector to climate change: The development of a pantropical Climate Risk Vulnerability Assessment to inform sub-national decision making [PDF]

, 2019
As climate change continues to exert increasing pressure upon the livelihoods and agricultural sector of many developing and developed nations, a need exists to understand and prioritise at the sub national scale which areas and communities are most ...
Bourgoin, Clément, Läderach, Peter, Martinez-Valle, Armando, Parker, Louis   +3 more
core   +2 more sources

Stretching the Printability Metric in Direct‐Ink Writing with Highly Extensible Yield‐Stress Fluids

Advanced Functional Materials, EarlyView.
This study introduces “drawability” as a new metric for assessing printability in direct‐ink writing, focusing on gap‐spanning performance and speed robustness. By designing yield‐stress fluids with high extensibility, we demonstrate that extensional strain‐to‐break significantly enhances printability.
Chaimongkol Saengow, Samya Sen, Joaquin Yus, Eliza E. Lovrich, Amanda G. Hoika, Kelly M. Chang, Arielle A. Pfeil, Nellie Haug, Amy J. Wagoner Johnson, Randy H. Ewoldt   +9 more
wiley   +1 more source

Infiltration sintering of WCu alloys from copper-coated tungsten composite powders for superior mechanical properties and arc-ablation resistance [PDF]

, 2016
W70Cu30(W-30 wt.% Cu) alloys were fabricated using cold pressing and infiltration sintering methods from two types of powders, i.e., mixed copper-tungsten (M-Cu-W) powders and our newly developed copper-coated tungsten composite (Cu@W) powders ...
Ann Van Eeckhaut, Elin Åberg, Ilse Smolders, Lisette Graae, Maria Lindskog, Marta Gómez-Galán, Stefan Brené, Teresa Femenía   +7 more
core   +5 more sources

Corrosion and arc erosion in MHD channels [PDF]

, 1989
Activity during this Quarter has included the following: Several more electrodes and side wall pegs have been received from Avco. Some of these are being prepared for optical and electron microscope examination. Some literature on sulfidation under MHD conditions has been found.
openaire   +2 more sources

Additive Manufacturing of NiTi Shape Memory Alloys for Elastocaloric Applications: A Review

Advanced Functional Materials, EarlyView.
Additive manufacturing enables complex NiTi architectures that overcome key limitations in elastocaloric refrigeration, including poor heat transfer and high mechanical work input. This review surveys recent advances in LPBF‐ and DED‐fabricated NiTi shape memory alloys for elastocaloric applications, highlighting process–structure–performance ...
Ignatius Andre Setiawan, Mohammad Mehrali, Jaka Tušek, Shiva Mohajerani, Xiebin Wang, Dermot Brabazon, Mohammad Elahinia, Mehrshad Mehrpouya   +7 more
wiley   +1 more source

Cathode erosion in a gas arc discharge at the threshold currents

Technical Physics, 2022
The results of experimental studies of the erosion rate of high-purity tungsten cathodes after pulsed arc discharges in a pure oil-free ultrahigh vacuum and in gases of various purities are reported. The erosion rate in high-purity argon does not change compared to the rate of erosion of electrodes in a pure oil-free vacuum. The rate of erosion in
openaire   +1 more source

Nanotherapies for Atherosclerosis: Targeting, Catalysis, and Energy Transduction

Advanced Healthcare Materials, EarlyView.
Atherosclerosis management is hindered by poor drug targeting and plaque heterogeneity. Nanotechnology overcomes these barriers via three core strategies: (1) target‐engineered nanocarriers that achieve lesion‐specific precision via ligand modification, biomimetic camouflage, stimuli‐responsive release, and self‐propelling nanomotors; (2) catalytic ...
Yuqi Yang, Jingguo Qu, Tonghuan Xiao, Xinyang Han, Michael Tin‐Cheung Ying   +4 more
wiley   +1 more source

Investigation of vacuum arc ignition characteristics and erosion morphology microstructure characteristics of CuCr55 electrode contact materials

AIP Advances
Copper–chromium alloy material, as one of the most important electrode contact materials in the field of electrical contact, has been widely used in vacuum interrupters.
Siyuan Liu, Xianglai Bo, Zhiyuan Liu, Yingsan Geng   +3 more
doaj   +1 more source

Preparation of Ag-based electrical contact materials and their anti-arc erosion property

Xi'an Gongcheng Daxue xuebao
To address the issues of poor arc erosion resistance and short electrical life of Ag-based electrical contact materials, the surface of carbon fibers was modified by chemical copper plating, and then Ag-based electrical contact materials were prepared by
FU Chong, LU Yang, MAN Shengbo, LIU Yuxin, LI Xu, ZHOU Xiongfei   +5 more
doaj   +1 more source