Zobrazeno 1 - 10
of 20
pro vyhledávání: '"R. S. Bes"'
Publikováno v:
Экономика: стратегия и практика, Vol 17, Iss 4, Pp 92-111 (2022)
The purpose of the study is to analyze the state of the rural territory of Kazakhstan and the Akmola region. The study is classified as a desk (marketing) study, the collection and analysis of secondary (preliminary) information was carried out, in p
Externí odkaz:
https://doaj.org/article/0c10727a4a6f4ed0904e2f1a1486c14b
Publikováno v:
Arabian Journal for Science and Engineering. 38:751-757
This study is about the preparation and the measurement of the optical properties of aluminium black layers obtained by the anodic oxidation of aluminium in an alkaline medium. The characterization and optimization of this surface have been initiated
Publikováno v:
Computational Materials Science. 33:395-399
Silicon nitride thin films were deposited on Si or Mo substrates using a technique of plasma enhanced chemical vapor deposition (PECVD). Depth profiles measurements were carried out on these Si 3 N 4 layers, as well as on the Si 3 N 4 /Mo and Si 3 N
Publikováno v:
Thin Solid Films. 466:75-80
The aim of this work was to obtain adherent ceria coatings on a low-cost metallic substrate like ferritic stainless steel by electrochemical deposition from a cerous nitrate aqueous solution. The coatings were characterized and influence of many oper
Publikováno v:
Solar Energy Materials and Solar Cells. 82:447-455
The optical properties of nickel pigmented anodized aluminium obtained by AC voltage and by periodic-reverse current impregnation have been compared. A solar selective absorbing surface is obtained from about the same threshold nickel content (γNi
Publikováno v:
Thin Solid Films. 371:183-190
Transmission and scanning electron microscopy and electrochemical impedance spectroscopy measurements were made on anodic layers on 1050 and 2024T3 aluminium alloys, prepared from solutions of phosphoric acid, boric acid and sodium tetraborate. The m
Publikováno v:
Journal of Applied Electrochemistry. 30:845-853
The porous oxide layer obtained by phosphoric anodic oxidation (PAO) of 1050 and 2024T3 aluminium alloys is modified by impregnation with zinc under alternating voltage. The resulting current against applied voltage relationship shows that a threshol
Publikováno v:
Journal of Materials Science. 35:1347-1351
The effect of various impregnation parameters on the structural features and optical properties of solar absorbing nickel pigmented anodic alumina coatings has been studied. The impregnation starts from a threshold voltage. A correlation between micr
Autor:
Constantinos Christofides, J.P. Traverse, Marios Nestoros, D Palmerio, R. S. Bes, Andreas Othonos
Publikováno v:
Scopus-Elsevier
Photothermal radiometry (PTR) is applied to characterize nickel-pigmented aluminium oxide solar absorbing coatings. A modulated laser beam is used to heat the solar samples. The subsequent emission of thermal radiation is measured as a function of mo
Publikováno v:
Matériaux & Techniques. 84:43-46
In order to optimize the processing of very thin and high emittance coatings, growth of the conversion layer as well as dissolution of the substrate are investigated. The limitant factor of dissolution is assumed to be diffusionnal on the basis of th