Results 211 to 220 of about 501,364 (265)

High-temperature reactions of phenyl oxidation

Symposium (International) on Combustion, 1994
The reactions of phenyl radicals with molecular and atomic oxygen have been studied in the temperature range 900–1800 K behind reflected shocks. The total pressure ranged from 1.3 to 2.5 bar. Phenyl radicals were generated by the fast thermal decomposition of nitroso- or iodobenzene.
Frank, P., Herzler, J., Just, Th., Wahl, C.   +3 more
openaire   +2 more sources

Oxidation in High Temperature Petrogenesis

American Journal of Science, 1961
A study has been made of a variety of metamorphic and magmatic rocks to determine how oxidative processes are reflected in their mineral assemblages. In this study particular attention is paid to solid solutions. Field and experimental evidence agree with theory as to the responses of ferromagnesian solid solution to compositional changes of the ...
openaire   +1 more source

High-Temperature Oxidation

2016
High-temperature oxidation (HTO) of metals and alloys is a scale-forming oxidation process in gaseous environments. HTO is influenced by metal temperature, gas composition, exposure time, and pressure, and it may be characterized by weight gain, thickness reduction (penetration), and rate of oxide thickness growth, which is a measure of the rate of ...
openaire   +2 more sources

High temperature oxidation of Co-Mn alloys

Corrosion Science, 1979
Abstract The oxidation of cobalt-manganese alloys in the range 0–45 wt%Mn corresponding to the stability of the α-phase of cobalt has been studied in the range 750–950°C as an example of binary alloys producing solid solution scales. The alloys oxidize according to a parabolic rate law with a rate constant intermediate between those of the pure ...
F. Gesmundo, P. Nanni, D.P. Whittle
openaire   +1 more source

The high-temperature oxidation of aldehydes

Symposium (International) on Combustion, 1971
Studies of the oxidation of aldehydes have given the velocity constants k1=0.013 and 0.076 liter mole−1 sec−1 for HCHO and C2H5CHO, respectively, and k4=1.36×106, 1.82×106, 2.41×106 liter mole−1 sec−1, for HCHO, C2H5CHO, and n-C3H7CHO, respectively, at 440°C, on the assumption that k5=1.8×109. These are preliminary values which may be modified slightly
R.R. Baldwin, D.H. Langford, M.J. Matchan, R.W. Walker, D.A. Yorke   +4 more
openaire   +1 more source

Dimensionality of high temperature superconductivity in oxides

Physica Scripta, 1989
Many models have been proposed to account for the high temperature superconductivity observed in oxide systems. Almost all of these models proposed are based on the uncoupled low dimensional carrier Cu-O layers of the oxides. Results of several experiments are presented and discussed.
openaire   +1 more source

High temperature oxidation of Ni2AlTi

Journal of Materials Science, 1989
The isothermal oxidation process in bulk and powdered Ni2AlTi (L21 structure) has been studied in the temperature range of 600 to 1200° C in air by means of X-ray diffraction and scanning electron microscopy. At 900 and 1200° C, the transient oxides, NiO and TiO2 were formed in the initial stage on the outer surface.
C. C. Lee, P. Shen
openaire   +1 more source

High-temperature oxidation of rhodium

Oxidation of Metals, 1990
The oxidation kinetics of Rh were measured in air at 1 atm. in the temperature range 600–1000°C. The oxidation weight gain proceeds logarithmically at the lower temperatures (600°C, 650°C) followed by a transition to power law behavior at the higher temperatures (≥800°C). The logarithmic growth kinetics result from thickening of a hexagonal Rh2O3 scale.
L. A. Carol, G. S. Mann
openaire   +1 more source

High-temperature oxidation of alloys

Oxidation of Metals, 1970
Some recent developments in the understanding of the oxidation of alloys at elevated temperatures are reviewed, with special reference to binary and ternary alloys upon which many commercial materials are based. Following an initial classification of alloy systems, certain basic principles and their limitations are considered, including factors ...
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Oxide Electrodes at High Temperatures

1985
High temperature fuel cells and electrolysers based on solid yttria stabilized zirconia electrolytes typically operate at 1000°C to reduce polarization losses. Much of the published work on electrode reactions has been carried out on precious metal electrodes (1–4).
G. P. Wirtz, H. S. Isaacs
openaire   +1 more source