Results 241 to 250 of about 2,912,181 (293)
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On the hot metal desulfurization
Steel Research, 1995Although there is no thermodynamic limitation to the desulfurization of carbon‐saturated iron with CaO, the process is well‐known to be slow. Consequently, the desulfurization of carbon‐saturated Fe‐S, Fe‐S‐Si, Fe‐S‐Si‐Al, Fe‐S‐Zr alloys by CaO, and Fe‐S‐Si alloys by CaO‐10 % CaF2 were investigated to determine the reaction mechanism. For this purpose,
Enver Oktay, Richard J. Fruehan
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2007
The paper focuses on the main scientific problems related to hot metal extrusion of thin walled tube, strip and sections, covering analytical approach, 2D- and 3D-numerical simulation and experimental validation. The main physical phenomena and parameter estimation related to thermo-mechanical constitutive equations, shear localization, bearing channel,
Per Thomas Moe +2 more
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The paper focuses on the main scientific problems related to hot metal extrusion of thin walled tube, strip and sections, covering analytical approach, 2D- and 3D-numerical simulation and experimental validation. The main physical phenomena and parameter estimation related to thermo-mechanical constitutive equations, shear localization, bearing channel,
Per Thomas Moe +2 more
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Hot Electrons and Hot Spins at Metal–Organic Interfaces
Advanced Functional Materials, 2017AbstractA model is developed to describe the electron transport properties of hot electron devices based on organic semiconductors. For the first time, the simulations cover all the different processes the carriers experience in the device, which allows disentangling various effects on the transport characteristics.
Thorsten Arnold +4 more
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Dephosphorisation of hot metal
1998In a tough economic climate and faced with increasing environmental awareness, Japanese steel makers developed a number of processes in the early 1980s to desiliconise and dephosphorise hot metal prior to decarburisation in the BOF. These processes used both CaO and Na2O based slags.
Johnston, P. W., Brooks, Geoffrey
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Surface reactions with hot electrons and hot holes in metals
Surface Science, 1995Abstract Electrochemical reactions (oxidation or reduction) start when the electronic levels of the redoxsystem within the electrolyte cross the Fermi level EF of the electrode - from below to above EF in the case of the oxidation and from above to below in the case of reduction.
D. Diesing, H. Janssen, A. Otto
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2016
With the increasing digitisation of almost every facet of human endeavour, concerns persist about ‘deskilling’ and precarious employment. The publishing industry has turned its energy to online and electronic media, and jobs continue to disappear from printing, publishing and journalism. The replacement of human labour with computerised technologies is
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With the increasing digitisation of almost every facet of human endeavour, concerns persist about ‘deskilling’ and precarious employment. The publishing industry has turned its energy to online and electronic media, and jobs continue to disappear from printing, publishing and journalism. The replacement of human labour with computerised technologies is
openaire +1 more source
Powder Technology, 1993
Abstract The densification behaviors of copper and tin powders during hot pressing are investigated. Pressure-densificationmeasure relations for the instantaneous and equilibrium responses are represented by linear equations. The slopes of the linear equations for the instantaneous response are represented by a function of temperature to correlate ...
KIM, KT, LEE, JH
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Abstract The densification behaviors of copper and tin powders during hot pressing are investigated. Pressure-densificationmeasure relations for the instantaneous and equilibrium responses are represented by linear equations. The slopes of the linear equations for the instantaneous response are represented by a function of temperature to correlate ...
KIM, KT, LEE, JH
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Evaporation and fission of hot metallic clusters and hot nuclei
Czechoslovak Journal of Physics, 1998Evaporation and fission of metallic clusters are described by models developed in nuclear physics which are appropriately modified. Results of calculations for evaporation rates, appearance sizes and fission times (with and without viscosity) are presented.
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Hot Electrons in Semiconductors and Metals
1988Femtosecond studies have been performed to investigate the scattering and energy relaxation of hot electrons in thin film semiconductors and metals. In both cases nonequilibrium carrier distributions are observed to remain for several picoseconds following ultrashort optical pulse excitation.
James G. Fujimoto, Erich P. Ippen
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Hot Workability of Metals and Alloys
JOM, 1987This tutorial presentation compares the hot working behavior of common industrial metals as grouped by crystal structure. The paper has primarily been arranged in a standardized tabular form so that cross referencing can be made between metals in the fcc, bcc, and hcp groups.
H. J. McQueen, D. L. Bourell
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