Effect of Indirect Correlations on the Critical Temperature of Ordering in a Binary А0.5В0.5 System in the Bulk Phase and Limited Cubic Domains

AbstractWe studied the initial stages of the electrodeposition of Pb in the presence of chlorine ions on Cu(100), using an oblique-incidence optical reflectivity difference (OIRD) technique. The OI-RD results reveal that immediately following the underpotential deposition (UPD) of the first Pb monolayer, two different types of bulk-phase films grow depending upon the magnitude of overpotential and cyclic voltammetry (CV) scan rate. At low overpotentials and/or slow scan rates, we propose that a bulk-phase Pb film grows on top of the UPD monolayer. At high overpotentials and/or fast scan rates, either a PbO, PbCl2, or a rough Pb bulk-phase layer grows on top of the UPD layer such that the reflectivity difference signal from such a film has an opposite sign.

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Optical properties of the Vanadium dioxide

JOURNAL OF ADVANCES IN PHYSICS ◽

10.24297/jap.v8i2.1520 ◽

2015 ◽

Vol 8 (2) ◽

pp. 2148-2155 ◽

Cited By ~ 1

Author(s):

Abderrahim Benchaib ◽

Abdesselam Mdaa ◽

Izeddine Zorkani ◽

Anouar Jorio

Keyword(s):

Energy Efficiency ◽

Optical Properties ◽

Critical Temperature ◽

Thin Layer ◽

Dielectric Function ◽

Vanadium Dioxide ◽

Ultra Violet ◽

Index Of Refraction ◽

Practical Utility ◽

Infra Red

The vanadium dioxide is a material thermo chromium which sees its optical properties changing at the time of theÂ transition from the phase of semiconductor state â†” metal, at a critical temperature of 68Â°C. The study of the opticalÂ properties of a thin layer of VOâ‚‚ thickness 82 nm, such as the dielectric function, the index of refraction, the coefficient ofextinction, the absorptionâ€™s coefficient, the reflectivity, the transmittivity, in the photonic spectrum of energy Ï‰ located inthe interval: 0.001242 â‰¤ Ï‰ (ev) â‰¤ 6, enables us to control well its practical utility in various applications, like the intelligentpanes, the photovoltaic, paintings for increasing energy efficiency in buildings, detectors of infra-red (I.R) or ultra-violet(U.V). We will make simulations with Maple and compare our results with those of the literature

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ALLEGHENY STAINLESS TYPE 405

Alloy Digest ◽

10.31399/asm.ad.ss0461 ◽

1985 ◽

Vol 34 (7) ◽

Keyword(s):

Fracture Toughness ◽

Corrosion Resistance ◽

High Temperature ◽

Critical Temperature ◽

Physical Properties ◽

Tensile Properties ◽

Heat Treating ◽

Ductile Material ◽

Air Cooling ◽

Temperature Performance

Abstract ALLEGHENY STAINLESS Type 405, unlike most other 12% chromium steels, is not subject to appreciable hardening through air cooling from high temperatures. This is an advantageous characteristic in those applications where a soft, ductile material is required after rapid cooling from above the critical temperature. The nonhardening tendency of Type 405 also retards the formation of hardening cracks where welding is employed. Its uses include annealing boxes and baffles where hardening during cooling would be undesirable. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on high temperature performance and corrosion resistance as well as heat treating and machining. Filing Code: SS-461. Producer or source: Allegheny Ludlum Corporation.

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