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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01 Jan 2000
TL;DR: In this article, the authors describe the nine processes used for producing metal foams, five of which are established commercially and fall into four broad classes: first, the foam is formed from the vapor phase; second, it is electrodeposited from an aqueous solution; third, it depends on liquid-state processing; and fourth, foam is created in the solid state.
Abstract: This chapter describes the nine processes used for producing metal foams, five of which are established commercially They fall into four broad classes: first, where the foam is formed from the vapor phase; second, where the foam is electrodeposited from an aqueous solution; third, where it depends on liquid-state processing; and fourth, where the foam is created in the solid state The properties of metal foam and other cellular metal structures depend on the properties of the metal, the relative density, and the cell topology The nine processes include bubbling gas through molten Al-SiC or Al-A1 2 O 3 alloys; stirring a foaming agent (typically TiH 2 ) into a molten alloy (typically an aluminum alloy) and controling the pressure while cooling; consolidation of a metal powder with a particulate foaming agent followed by heating into the mushy state when the foaming agent releases hydrogen, expanding the material; manufacturing a ceramic mold from a wax or polymer-foam precursor followed by burning-out of the precursor and pressure infiltration with a molten metal or metal powder slurry which is then sintered; vapor phase deposition or electro deposition of metal onto a polymer foam precursor; trapping of high-pressure inert gas in pores by powder hot isostatic pressing; sintering of hollow spheres; co-pressing of a metal powder with a leachable powder; and dissolution of gas in a liquid metal under pressure
38 citations
TL;DR: In this paper, the authors considered the displacement of molten metal from a crater being formed on the cathode during the operation of a vacuum arc under the pressure of the plasma and formulated a criterion for the formation of a thin ridge of expelled liquid metal (a sheet-like jet) at the crater edge.
Abstract: We consider the displacement of molten metal from a crater being formed on the cathode during the operation of a vacuum arc under the pressure of the cathode plasma and formulate a criterion for the formation of a thin ridge of expelled liquid metal (a sheet-like jet) at the crater edge. When the ridge height is substantially greater than its thickness, conditions arise for the development of the Rayleigh–Plateau capillary instability, which breaks the axial symmetry of the problem. Estimates are presented, which suggest that this instability is responsible for the breakup of the liquid ridge into jets, which play an important role in the self-sustained operation of a discharge.
38 citations
TL;DR: The developed thermodynamic model shows the independence of the final phase constituents from experimental conditions such as melting temperature or vacuum system pressure which offers a general pathway for the manufacture of oxide dispersion strengthened materials.
Abstract: In general, melting process is not a common method for the production of oxide dispersion strengthened (ODS) alloys due to agglomeration and coarsening of oxide particles. However, vacuum casting process has recently been employed as a promising process to produce micro-scale oxide dispersed alloys. In this paper, we report the process and characterization of in situ formation and uniform dispersion of nano-scale Y-Ti oxide particles in Fe-10Ni-7Mn (wt.%) alloy. The processing route involves a solid-liquid reaction between the added TiO2 as an oxygen carrier and dissolved yttrium in liquid metal leading to an optimal microstructure with nano-sized dispersed oxide particles. The developed thermodynamic model shows the independence of the final phase constituents from experimental conditions such as melting temperature or vacuum system pressure which offers a general pathway for the manufacture of oxide dispersion strengthened materials.
38 citations
TL;DR: In this article, the feasibility of replacing the bismuth cathode with a Bismuth-antimony alloy cathode in Li-Bi based liquid metal batteries was investigated and the influence of the Bi:Sb ratio on voltage characteristics was evaluated via the constant current discharge method and electrochemical titration.
38 citations