Results 261 to 270 of about 197,000 (305)
Some of the next articles are maybe not open access.
Nature, 1967
IN an investigation of the cathode mechanism of the vacuum arc, in a vacuum of 10−5 torr, arc voltages were recorded for forty-one different cathode metals. Oscillographic measurements were made at the minimum stable arcing current over a period of 20 sec; values varied from 5 to 25 V.
openaire +1 more source
IN an investigation of the cathode mechanism of the vacuum arc, in a vacuum of 10−5 torr, arc voltages were recorded for forty-one different cathode metals. Oscillographic measurements were made at the minimum stable arcing current over a period of 20 sec; values varied from 5 to 25 V.
openaire +1 more source
High Velocity Streams in the Vacuum Arc
Transactions of the American Institute of Electrical Engineers, 1934The high velocity streams of particles in the vacuum arc have been subjected to a detailed study, and the results are presented in this paper, together with a discussion of many of the phenomena involved. Experimental determinations of the relations between arc current, mass of condensed metal, electrodes, and velocity of the vapor stream are included.
E. C. Easton, F. B. Lucas, F. Creedy
openaire +1 more source
Deionisation of an interrupted vacuum arc
Proceedings of the Institution of Electrical Engineers, 1977Measurements have been made of time-dependent saturation ion currents flowing to a probe and to the discharge electrodes following the forced extinction of high-current (1–5 kA) vacuum arcs of short duration (≃1 ms) on copper electrodes.The results have been utilised to derive ion-flux distributions irrespective of ion-charge number, assuming ...
G.J. Bauer, R. Holmes
openaire +1 more source
Epitaxy by vacuum arc evaporation
Journal of Crystal Growth, 1983Abstract A substantial decrease of the epitaxy temperature for vapour deposition of gold, silver and platinum, on NaCl cleavage faces has been found using a pulsed vacuum arc as a vapour source isntead of a resistance-heated boat. A characteristics of the arc evaporation is the extremely high density of metal formed on the substrate.
M. Krohn, K.-P. Meyer, H. Bethge
openaire +1 more source
2008
Abstract The vacuum arc remelting (VAR) process is widely used to improve the cleanliness and refine the structure of standard air melted or vacuum induction melted (VIM) ingots and also used in the triplex production of superalloys. This article illustrates the VAR process and the capabilities and variables of the VAR process.
openaire +1 more source
Abstract The vacuum arc remelting (VAR) process is widely used to improve the cleanliness and refine the structure of standard air melted or vacuum induction melted (VIM) ingots and also used in the triplex production of superalloys. This article illustrates the VAR process and the capabilities and variables of the VAR process.
openaire +1 more source
IEEE Transactions on Plasma Science, 1977
This paper briefly reviews anode phenomena in vacuum arcs, specially experimental work. It discusses, in succession, arc modes at the anode, anode temperature measurements, anode ions, transitions of the arc into various modes (principally the anode spot mode), and theoretical explanations of anode phenomena. The two most common anode modes in a vacuum
openaire +1 more source
This paper briefly reviews anode phenomena in vacuum arcs, specially experimental work. It discusses, in succession, arc modes at the anode, anode temperature measurements, anode ions, transitions of the arc into various modes (principally the anode spot mode), and theoretical explanations of anode phenomena. The two most common anode modes in a vacuum
openaire +1 more source
Physica B+C, 1981
Abstract Considerable effort has been devoted to the analysis of mass flows in vacuum arcs during recent years. It is generally agreed that there are three different fluxes which orginate from the cathode; they consist of ions, molten droplets and metal vapour. A critical summary will be given of the available data on these mass flows.
openaire +1 more source
Abstract Considerable effort has been devoted to the analysis of mass flows in vacuum arcs during recent years. It is generally agreed that there are three different fluxes which orginate from the cathode; they consist of ions, molten droplets and metal vapour. A critical summary will be given of the available data on these mass flows.
openaire +1 more source