Results 11 to 20 of about 211,793 (216)

Biochemodynamic Features of Metal Ions Bound by Micro- and Nano-Plastics in Aquatic Media

Frontiers in Chemistry, 2018
A simple model, based on spherical geometry, is applied to the description of release kinetics of metal species from nano- and micro-plastic particles.
Raewyn M. Town, Raewyn M. Town, Herman P. van Leeuwen, Ronny Blust   +3 more
doaj   +1 more source

Effect of AC Pre-Charging of Epoxy Insulator on Flashover Properties in Eco-Friendly Binary Gas Mixtures

Energies
Metal particles and surface charge accumulation are considered the key factors that could trigger unexpected flashovers of insulators equipped in gas-insulated switchgear (GIS).
Jian Guan, Guohui Han, Qifeng Shang, Xiaohu Qi, Zhiying Wang, Yu Gao   +5 more
doaj   +1 more source

Effects of metal particle material on surface flashover performance of alumina-filled epoxy resin spacers in SF6/N2 mixtures under DC voltage

AIP Advances, 2019
When metal particle is attached on spacer surface, it will distort surface electric field and may reduce surface insulation level. Therefore, it is important to research the relationship between metal particle attachment and surface flashover property ...
Han Wang, Jianyi Xue, Junhong Chen, Junbo Deng, Guanjun Zhang, Shaoxin Meng   +5 more
doaj   +1 more source

Numerical simulation of particle fracture and surface erosion due to single particle impact

AIP Advances, 2021
Particle fracture can influence material failure and removal mechanisms in high velocity impact progress. In this paper, a coupled finite element method-smooth particle hydrodynamics numerical model of a single irregularly shaped particle erode metal ...
Mingchao Du, Zengliang Li, Long Feng, Xiangwei Dong, Jiaqi Che, Yanwen Zhang   +5 more
doaj   +1 more source

Effect of water atomized powder size on the flowability and sintered properties in metal binder jet 3D printing

Mechanical Engineering Journal, 2023
Binder jet is one of the metal additive manufacturing methods. In this method, metal powder is used as a raw material, and a metal part is obtained by sintering a green body produced by jetting a binder on a metal powder bed leveled with a roller ...
Tomo TAKAHASHI, Yuta KINAI, Toshiko OSADA, Satoshi KOBAYASHI   +3 more
doaj   +1 more source

Surface Charge Accumulation on Basin-Shape Insulator in Various Eco-Friendly Gases with Metal Particle Under AC Voltage

Energies
Surface charge accumulation is considered one of the key factors that lead to unexpected insulator flashover failures in gas-insulated switchgear (GIS).
Xiaohui Duan, Chuanyun Zhu, Qifeng Shang, Zhen Zhang, Kaiyuan Wang, Yu Gao   +5 more
doaj   +1 more source

Investigating the Effect of Metal Particles and Air Gap Defects on the Surface Charge Distribution of Epoxy Resin Using a Modified Capacitive Probe

IEEE Access
Metal particle and air gap defects on the surface of insulators can induce localized electric field distortions and exacerbate charge accumulation, subsequently triggering surface flashover.
Feng Wang, Huimin Zhang, Dilixiati Hayireding, Haocheng Wang, Kaibin Liang, Lipeng Zhong, Heng Yi, Zeping Huang, Houjie Wu   +8 more
doaj   +1 more source

Effect of proppant impingement on flow-induced corrosion of tubular steel super 13Cr via CFD and experiment

Egyptian Journal of Petroleum, 2018
Data from a standard laboratory test including open-circuit potential (OCP) and current density monitoring is used to study the effect of fracturing proppant impingement on corrosion of tubular steel. A solid-liquid flow simulation is performed to obtain
J.R. Cheng, N.S. Zhang, Y.P. Cao, Z. Li, Y.H. Dou   +4 more
doaj   +1 more source

The preparation of spherical metal powders using the high-temperature remelting spheroidization technology

Materials & Design, 2021
In this paper, a novel technology to prepare spherical metal powder was proposed. Several spherical metal powders were fabricated successfully by using the high-temperature remelting spheroidization (HRS) technology.
Qipeng Bao, Yiru Yang, Xiaochun Wen, Lei Guo, Zhancheng Guo   +4 more
doaj   +1 more source

Metal particle movement and distribution characteristics under AC voltage and ball-plane electrodes

High Voltage, 2019
Metal particles, difficult to be eliminated in gas-insulated metal-enclosed switchgear (GIS), can cause GIS discharge and breakdown between electrodes, or flashover on the insulator surface.
Jixing Sun, Lei Sun, Weijiang Chen, Zhibing Li, Xianglian Yan, Yuan Xu   +5 more
doaj   +1 more source