The vacuum breakdown properties and arc erosion behaviors of CuTiW alloys

2020 ◽  
Vol 118 ◽  
pp. 104865
Author(s):  
Xiaohong Yang ◽  
Yipeng Zhao ◽  
Dandan Kang ◽  
Juntao Zou ◽  
Peng Xiao ◽  
...  
Keyword(s):  
Arc Erosion ◽  
Vacuum Breakdown

scholarly journals Arc erosion resistance of hybrid copper matrix composites reinforced with CNTs and micro-TiB2 particles

2021 ◽  
Vol 11 ◽  
pp. 1469-1479 ◽  
Author(s):  
Xiuhua Guo ◽  
Yubo Yang ◽  
Kexing Song ◽  
Li Shaolin ◽  
Feng Jiang ◽  
...  
Keyword(s):  
Erosion Resistance ◽  
Copper Matrix ◽  
Matrix Composites ◽  
Copper Matrix Composites ◽  
Arc Erosion ◽  
Tib2 Particles

Arc erosion characteristics evolution of Ag/Ti 3 SiC 2 composites during repetitive arc breakdowns in SF 6 gaseous medium

2021 ◽  
Author(s):  
Zijue Zhou ◽  
Ting Zhao ◽  
Yi Feng ◽  
Hao Zhao ◽  
Gang Qian
Keyword(s):  
Gaseous Medium ◽  
Arc Erosion

High voltage vacuum breakdown in a weak transverse magnetic field

Vacuum ◽  
1968 ◽  
Vol 18 (7) ◽  
pp. 409
Author(s):  
A Watson ◽  
WR Bell ◽  
MJ Mulcahy
Keyword(s):  
Magnetic Field ◽  
Transverse Magnetic Field ◽  
High Voltage ◽  
Transverse Magnetic ◽  
Vacuum Breakdown

scholarly journals Synergistic strengthening mechanism of copper matrix composite reinforced with nano-Al2O3 particles and micro-SiC whiskers

2021 ◽  
Vol 10 (1) ◽  
pp. 62-72
Author(s):  
Huanran Lin ◽  
Xiuhua Guo ◽  
Kexing Song ◽  
Jiang Feng ◽  
Shaolin Li ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Erosion Resistance ◽  
Strengthening Mechanism ◽  
Copper Matrix ◽  
Heavy Duty ◽  
Arc Erosion ◽  
Comprehensive Performance ◽  
Sic Whiskers ◽  
Copper Matrix Composite ◽  
Time And Energy

Abstract Although Cu–Al2O3 composites have good comprehensive performance, higher mechanical properties and arc erosion resistance are still required to meet heavy-duty applications such as electromagnetic railguns. In this work, a novel hybrid SiCw/Cu–Al2O3 composite was successfully prepared by combining powder metallurgy and internal oxidation. The microstructure and mechanical behavior of the SiCw/Cu–Al2O3 composite were studied. The results show that nano-Al2O3 particles and micro-SiCw are introduced into the copper matrix simultaneously. Well-bonded interfaces between copper matrix and Al2O3 particles or SiCw are obtained with improved mechanical and arc erosion resistance of SiCw/Cu–Al2O3 composite. The ultimate tensile strength of the SiCw/Cu–Al2O3 composite is 508.9 MPa, which is 7.9 and 56.1% higher than that of the Cu–Al2O3 composite and SiCw/Cu composite, respectively. The strengthening mechanism calculation shows that Orowan strengthening is the main strengthening mechanism of the SiCw/Cu–Al2O3 composite. Compared with Cu–Al2O3 composite, the hybrid SiCw/Cu–Al2O3 composite has lower arc time and energy and better arc stability.

Plasma–liquid interaction during a pulsed vacuum breakdown

2021 ◽  
Vol 129 (13) ◽  
pp. 133301
Author(s):  
S. A. Barengolts ◽  
I. V. Uimanov ◽  
V. I. Oreshkin ◽  
K. V. Khishchenko ◽  
E. V. Oreshkin
Keyword(s):  
Vacuum Breakdown

Vacuum-Breakdown-Induced Needle-Shaped Ends of Multiwalled Carbon Nanotube Yarns and Their Field Emission Applications

Nano Letters ◽  
2007 ◽  
Vol 7 (12) ◽  
pp. 3792-3797 ◽  
Author(s):  
Yang Wei ◽  
Jiang ◽  
Liang Liu ◽  
Zhuo Chen ◽  
Fan
Keyword(s):  
Carbon Nanotube ◽  
Field Emission ◽  
Multiwalled Carbon Nanotube ◽  
Multiwalled Carbon ◽  
Vacuum Breakdown ◽  
Carbon Nanotube Yarns

scholarly journals Arc erosion behavior of TiB2/Cu composites with single-scale and dual-scale TiB2 particles

2019 ◽  
Vol 8 (1) ◽  
pp. 619-627 ◽  
Author(s):  
Shaolin Li ◽  
Xiuhua Guo ◽  
Shengli Zhang ◽  
Jiang Feng ◽  
Kexing Song ◽  
...  
Keyword(s):  
Erosion Resistance ◽  
Copper Matrix ◽  
Mechanical And Thermal Properties ◽  
Structure Defects ◽  
Arc Erosion ◽  
Single Scale ◽  
The Matrix ◽  
Tib2 Particles ◽  
Thermal Stability Of ◽  
Dual Scale

AbstractArc erosion behaviors of TiB2/Cu composites with single-scale and dual-scale TiB2 particles fabricated by powder metallurgy were studied. It was revealed that the dual-scale TiB2/Cu composites had fewer structure defects compared with the single-scale TiB2/Cu composites, and TiB2 particles with different size were uniformly distributed in the copper matrix. When the ratio of 2 μm over 50 μm TiB2 particles is 1:2, the density of TiB2/Cu composite is 98.5% and shows best mechanical and thermal properties. The arc duration and energy of TiB2/Cu composites increase with the increase of electric current in contact material testing. Compared with the single-scale TiB2/Cu composites, the arc erosion of dual-scale TiB2/Cu composite with 2 μm+50 μm (1:2) TiB2 was slighter. The anode bulge area and cathode erosion pit of dual-scale TiB2/Cu composite was smaller. The dual-scale TiB2 particles optimize the microstructure and thermal stability of the composite, which is conducive to alleviating arc erosion. The synergistic effect of different sized TiB2 particles in the matrix improved the arc erosion resistance of TiB2/Cu composite during arcing.

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