High-temperature linear kinetics of FeS formation and reduction in COS-CO-CO2 gas mixtures

1971 ◽  
Vol 3 (6) ◽  
pp. 545-555 ◽  
Author(s):  
Steinar Haugen ◽  
Aasmund Sterten
Keyword(s):  
High Temperature ◽  
Gas Mixtures ◽  
Co2 Gas ◽  
Linear Kinetics ◽  
Kinetics Of

Kinetics of Reduction of CaO-FeO x -MgO-PbO-SiO2 Slags by CO-CO2 Gas Mixtures

2017 ◽  
Vol 48 (4) ◽  
pp. 2057-2066 ◽  
Author(s):  
Sharif Jahanshahi ◽  
Steven Wright
Keyword(s):  
Gas Mixtures ◽  
Co2 Gas ◽  
Kinetics Of ◽  
Kinetics Of Reduction

Kinetics of Reduction of Lead Minerals and Commercial Lead Bearing Materials by CO/CO2 Gas Mixtures

JOM ◽  
1985 ◽  
Vol 37 (8) ◽  
pp. 57-61
Author(s):  
M. M. Hussain ◽  
D. R. Morris
Keyword(s):  
Gas Mixtures ◽  
Co2 Gas ◽  
Bearing Materials ◽  
Kinetics Of ◽  
Kinetics Of Reduction

The kinetics of S35 exchange between SO2/CO/CO2 gas mixtures and copper sulfide melts at 1523 K

1991 ◽  
Vol 22 (2) ◽  
pp. 211-217 ◽  
Author(s):  
P. T. Morland ◽  
S. P. Matthew ◽  
P. C. Hayes
Keyword(s):  
Copper Sulfide ◽  
Gas Mixtures ◽  
Co2 Gas ◽  
Kinetics Of

scholarly journals High temperature corrosion of cast heat resisting steels in CO+CO2 gas mixtures

2008 ◽  
Vol 50 (8) ◽  
pp. 2398-2406 ◽  
Author(s):  
Nan Xu ◽  
Daniel Monceau ◽  
David Young ◽  
Jader Furtado
Keyword(s):  
High Temperature ◽  
Gas Mixtures ◽  
High Temperature Corrosion ◽  
Co2 Gas

Radiative-Collisional Models in Non-Equilibrium Aerothermodynamics of Entry Probes

2012 ◽  
Vol 134 (3) ◽  
Author(s):  
Sergey T. Surzhikov
Keyword(s):  
Heat Transfer ◽  
High Temperature ◽  
Low Temperature ◽  
Chemical Kinetic ◽  
Gas Mixtures ◽  
Hypersonic Flows ◽  
Radiative Heating ◽  
Space Vehicles ◽  
Physical Chemical ◽  
Kinetics Of

To design space vehicles aimed for returning payloads from a geostationary orbit, the Moon and other large or small planets of Solar system, a knowledge of the total (convective and radiative) heating from an environment is required. It is well known that the radiative heat load on a space vehicle moving through the atmosphere increases as the speed and the size increase, therefore, in many of these missions the large part of the trajectory will pass at high altitude, where the low atmospheric density can lead to significant thermal, chemical and physical nonequilibrium effects. Physical models and computational codes used to predict the aerothermodynamics must account for not only high temperature equilibrium thermodynamics (as a rule, within the framework of the local thermodynamic equilibrium (LTE) approach), but also for nonequilibrium one. Therefore, an accurate prediction of radiative heating as well as convective one under both equilibrium and nonequilibrium conditions becomes important to designers and space mission planners. To develop a prediction computational fluid dynamics (CFD) tool for reentry flows, where dissociation, ionization and radiation are important, some major areas are addressed. The most significant of them are following: (1) physical-chemical kinetics of high temperature dissociated and ionized gases, (2) transport properties of the gas mixtures, (3) spectral radiation properties of high temperature gases and low-temperature plasmas, (4) numerical simulation algorithms for prediction of nonequilibrium gas mixtures dynamics and radiation heat transfer in volumes of various geometry, and (5) models of physical and chemical processes accompanied by interaction of gas flows and radiation with thermoprotection systems (TPS) of space vehicles (including their thermochemical destruction, ablation, sublimation, etc.). In literatures (See Refs. (Park, C, 1990, Nonequilibrium Hypersonic Aerothermodynamics, Willey-Interscience Publication, J. Wiley & Sons, New York; Park, C., 1993, “Review of Chemical Kinetic Problems of Future NASA Missions. I: Earth Entries,” J. Thermophys. Heat Transfer, 7(3), pp. 385–398; Park, et al., 1994, “Review of Chemical-Kinetic Problems of Future NASA Missions, II: Mars Entries,” J. Thermophys. Heat Transfer, 8(1), pp. 9–23; Sarma, G., 2000, “Physico-Chemical Modelling in Hypersonic Flow Simulation,” Prog. Aerosp. Sci., 36, pp. 281–349; Huo, and Thuemmel, 1995, Electron-Air Molecule Collisions in Hypersonic Flows. Molecular Physics and Hypersonic Flows, Capitelli M., ed., Kluwer Academic Publishers, pp. 115–138.)) one can find reviews of governing equations used in the aerophysics, boundary conditions and the associated inputs using the physical-chemical models and their partially successful applications. This article presents the states of the art of models of electronic kinetics in the nonequilibrium low-temperature plasma of complex chemical compositions (air and carbon dioxide mixtures) widely met in various aerospace applications. Special attention is given to electronic kinetics of atoms and diatomic molecules within the framework of the radiative-collisional models.

The Ordered Phase Formation in Ti-Al-Ga Alloys

1970 ◽  
Vol 28 ◽  
pp. 440-441
Author(s):  
Shiro Fujishiro ◽  
Harold L. Gegel
Keyword(s):  
Thermal Stability ◽  
High Temperature ◽  
Titanium Alloys ◽  
Growth Kinetics ◽  
Stoichiometric Composition ◽  
Good Potential ◽  
Alpha Titanium ◽  
Cold Rolled ◽  
Kinetics Of ◽  
Thermal Stability Of

Ordered-alpha titanium alloys having a DO19 type structure have good potential for high temperature (600°C) applications, due to the thermal stability of the ordered phase and the inherent resistance to recrystallization of these alloys. Five different Ti-Al-Ga alloys consisting of equal atomic percents of aluminum and gallium solute additions up to the stoichiometric composition, Ti3(Al, Ga), were used to study the growth kinetics of the ordered phase and the nature of its interface.The alloys were homogenized in the beta region in a vacuum of about 5×10-7 torr, furnace cooled; reheated in air to 50°C below the alpha transus for hot working. The alloys were subsequently acid cleaned, annealed in vacuo, and cold rolled to about. 050 inch prior to additional homogenization

ON THE KINETICS OF A RELAXING HIGH TEMPERATURE ATMOSPHERIC PRESSURE NITROGEN PLASMA

2004 ◽  
Vol 8 (4) ◽  
pp. 563-573 ◽  
Author(s):  
A. A. Belevtsev ◽  
V.F. Chinnov ◽  
A.V. Fyodorov ◽  
E. Kh. Isakaev ◽  
O. A. Sinkevich
Keyword(s):  
High Temperature ◽  
Atmospheric Pressure ◽  
Nitrogen Plasma ◽  
Kinetics Of
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