Influence of interference effects in oxide films on the kinetics of laser heating of metals

Arzuov, M I; Barchukov, A. I.; Bunkin, F. V.; Кириченко, Н. А.; Konov, Vitalii I; Luk’yanchuk, Boris

doi:10.1070/qe1979v009n03abeh008765

Cited by 15 publications

(4 citation statements)

References 1 publication

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“…For a more consistent calculation of the Gibbs energy G 0 P,T of the reactions between the steel components and air in accordance with (1), it is necessary to take into account the partial pressures P i of the components of the gas medium in which the treatment occurs and the concentrations (molar fractions x i ) of the stainless steel components.…”

Section: Theoretical Backgroundmentioning

confidence: 99%

“…Figure 1 shows the temperature dependences of the Gibbs energy of the formation reactions, calculated by equation (1). For each formation reaction, the Gibbs energy was calculated within the corresponding temperature range 298-2000 K.…”

Section: Calculation Of Steel-atmosphere Interaction Processes Occurr...mentioning

confidence: 99%

“…It is known that during laser heating of metals in air, colored interference films appear on their surfaces due to the chemical interaction with the atmosphere [1]. In the case of pulse laser action, these phenomena can be localized within an exposure zone, which makes it possible to develop a process for colored laser marking [2].…”

Section: Introductionmentioning

confidence: 99%

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Availability of methods of chemical thermodynamics and kinetics for the analysis of chemical transformations on metal surfaces under pulsed laser action

Veiko¹,

Slobodov²,

Одинцова³

2013

Laser Phys.

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A computational thermodynamic approach to determining the phase-chemical composition of films formed on the surface of metals and alloys under laser oxidation in the normal atmosphere, depending on their bulk composition, laser exposure conditions, and composition of the atmosphere, is suggested. It is demonstrated for the example of a complex alloy (alloyed steel of Russian brand 12X18H10T) subjected to laser heating in air that, among the wide variety of different possible reactions of iron, nickel, or chromium with the components of air (oxygen, nitrogen, carbon, its compounds, atmospheric moisture, etc), only strictly defined reactions can occur. First of all these are metal oxidation processes with the formation of an oxide film whose phase and chemical composition is determined by temperature and heating duration. Simulated results are confirmed by the experimental data provided by energy-dispersive x-ray spectroscopy.

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Section: Theoretical Backgroundmentioning

confidence: 99%

Section: Calculation Of Steel-atmosphere Interaction Processes Occurr...mentioning

confidence: 99%

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Availability of methods of chemical thermodynamics and kinetics for the analysis of chemical transformations on metal surfaces under pulsed laser action

Veiko¹,

Slobodov²,

Одинцова³

2013

Laser Phys.

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“…An example of such considerations is the formation of the oxide layer and corresponding interference effects at the oxide-metal interface. 4 In the present study, our focus shifts from examining the interaction of lasers with conventional materials, such as metals, to exploring the interaction of laser radiation with Carbon-Fiber Reinforced Polymers (CFRPs). CFRPs offer numerous advantages that underpin their widespread adoption across various industries.…”

Section: Introductionmentioning

confidence: 99%

Laser-epoxy interaction and plume shielding in the presence of crossflow

Andrienko

2024

High-Power Laser Ablation VIII

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The present work considers the interaction of a continuous-wave (CW) laser with carbon-fiber reinforced polymers in the presence of a subsonic crossflow. A multi-physical approach has been developed to address this computational problem. The optical model of a plume has been coupled with the flow and material response model, encompassing the formation and transport of soot particulates. At given power densities of the laser beam the gaseous component of a plume is nearly transparent to the laser beam, and the laser beam shielding by a plume arises from soot particulates. Soot particulates do not reach the outer edge of the boundary layer due to a small diffusion coefficient compared to gaseous species. These particulates are swept downstream by the crossflow, creating a favorable window for the transmission of the laser energy to the material in terms of the crossflow velocity-laser power density envelope.

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Laser-Assisted Oxidation and Nitridation

Boyd

1987

Laser Processing of Thin Films and Microstructures

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Influence of interference effects in oxide films on the kinetics of laser heating of metals

Cited by 15 publications

References 1 publication

Availability of methods of chemical thermodynamics and kinetics for the analysis of chemical transformations on metal surfaces under pulsed laser action

Availability of methods of chemical thermodynamics and kinetics for the analysis of chemical transformations on metal surfaces under pulsed laser action

Laser-epoxy interaction and plume shielding in the presence of crossflow

Laser-Assisted Oxidation and Nitridation

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