Topic
Liquid metal
About: Liquid metal is a research topic. Over the lifetime, 6947 publications have been published within this topic receiving 77785 citations. The topic is also known as: liquid alloy & liquid metal alloy.
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20 Jul 2020
TL;DR: In this article, a numerical investigation into how solutal buoyancy and electrovortex flows interact and influence the alloy composition is presented, and theoretical estimates for the minimal flow magnitude needed to enhance mixing during discharge are derived, and a novel scaling law for the intensity of the convection flow that is observed during charge is proposed.
Abstract: Liquid metal batteries can be more rapidly charged and discharged when the bottom layer alloy is being efficiently mixed by flows. A numerical investigation into how solutal buoyancy and electrovortex flows interact and influence the alloy composition is presented. Theoretical estimates for the minimal flow magnitude needed to enhance mixing during discharge are derived, and a novel scaling law for the intensity of the solutal convection flow that is observed during charge is proposed.
29 citations
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TL;DR: In this paper, an impregnated electrode-type liquid metal ion source was developed in which a sintered porous tungsten tip was used to control the flow rate of the liquid metal.
Abstract: An impregnated‐electrode‐type liquid metal ion source has been developed in which a sintered porous tungsten tip is used. The flow rate of the liquid metal can be controlled by selecting the diameters of the tungsten powders to be sintered (10 and 100 μm). Since the liquid metal can be stably supplied to the tip head, stable operation in a wide range from low (a few μA) to high ion current (a few hundred μA) is possible for various metals such as gallium and gold. Moreover, it is also a potential ion source with liquid metals such as silver with high vapor pressure at the melting point. A new method of holding and directly heating the main component of the ion source by means of knife‐edged electrodes with a spring is extremely effective for high temperature operation.
29 citations
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29 citations
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TL;DR: In this paper, a model of temperature field in a half-infinite body during surfacing was presented by aggregating temperature increments caused by applying liquid metal and heat radiation of moving electrode.
29 citations
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TL;DR: In this paper, an intrinsically irreversible thermoacoustic heat engine coupled to a magnetohydrodynamic electrical generator is described, where the engine is positioned in the field of a magnet and is oriented such that the liquid metal oscillates in a direction orthogonal to the magnetic field of the magnet, whereby an alternating electrical potential is generated.
Abstract: A thermoacoustic magnetohydrodynamic electrical generator includes an intrinsically irreversible thermoacoustic heat engine coupled to a magnetohydrodynamic electrical generator. The heat engine includes an electrically conductive liquid metal as the working fluid and includes two heat exchange and thermoacoustic structure assemblies which drive the liquid in a push-pull arrangement to cause the liquid metal to oscillate at a resonant acoustic frequency on the order of 1,000 Hz. The engine is positioned in the field of a magnet and is oriented such that the liquid metal oscillates in a direction orthogonal to the field of the magnet, whereby an alternating electrical potential is generated in the liquid metal. Low-loss, low-inductance electrical conductors electrically connected to opposite sides of the liquid metal conduct an output signal to a transformer adapted to convert the low-voltage, high-current output signal to a more usable higher voltage, lower current signal.
29 citations