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1
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Journal of KONES
EN In the paper the investigative results of lubricity and surface properties for four synthetic perfluoropolyether (PFPE) oils, comparing with the high quality gear oil Mobilube 1SHC 75W-90 and two base oils PAO-6 and SN-650, are discussed. The goal of the research was to identify anti-wear and anti-s[...]
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Archives of Metallurgy and Materials
2009 Vol. 54, iss. 4 1167-1172
PL W pracy zaproponowano model pozwalający na obliczanie napięcia powierzchniowego ciekłych trójskładnikowych stopów Cu-Pb-Fe na podstawie znajomości gęstości (objętości molowej) składników roztworu i napięcia powierzchniowego oraz właściwości termodynamicznych odpowiednich stopów podwójnych. Następnie[...]
EN In the paper, a model enabling calculation of surface tensions of liquid ternary Cu-Pb-Fe alloys, on the basis of the densities (molar volumes) of the solution components as well as the surface tensions and the thermodynamic properties of the adequate binary alloys, has been proposed. Basing on the [...]
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Bulletin of the Polish Academy of Sciences. Chemistry
EN Surface tension of aqueous solutions of sodium dodecyl sulphate (SDS) was measured by the drop-weight method, at various KCl concentrations. A significant reduction of the solution surface tension was observed with increasing electrolyte concentration in accordance with previous literature data obta[...]
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Biocybernetics and Biomedical Engineering
EN The paper summarizes recent achievements in the using the techniques of determination of dynamic surface tension for the evaluation of quality of the pulmonary surfactant (PS). Based on the essential information on physical chemistry of the PS system, the importance of the dynamic surface activity o[...]
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Polish Journal of Chemistry
1999 vol. 73 nr 3 527-539
EN The differential capacitance characteristics of (Hg/0.1 mol dm-3KF and Hg/0.1 mol dm-3 LiClO4 interfaces were studied in the presence of L-histidine (His). The strongest adsorption of His on yhe mercury electrode was observed in solutions at pHł8. Probably, it results from the strong interactions be[...]
6
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Nukleonika
EN Positron lifetime spectra were measured for a series of odd-numbered liquid n-alkanes (C7H16, C9H20, C13H28 and C19H40) in a broad range of temperature. According to the “bubble model” the ortho-positronium (o-Ps) lifetime is determined by surface tension. Bubble radius was calculated using the Tao-[...]
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Image Processing & Communications
2012 Vol. 17, no. 4 201--206
EN The article presents the construction of a new device that has been formed within the frames of a grant nr KBN N N519 441 839 - An integrated platform for automatic measurement of wettability and surface tension of solders at high temperatures. The authors have presented methodology and analytical c[...]
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Przegląd Elektrotechniczny
2016 R. 92, nr 11 244--247
PL Przedstawiono nową metode omiaru napięcia powierzchniowgo bazująca na pomiarze podległości miedzy dwoma przewodzacymi płytkami. Pomiarowi podlega pojemność między tymi płytkami.
EN A new surface tension measurement is presented. The design used variations of relations of distance between parallel conductive plates (d) and the surface tension values ( γ ). This experiment was conducted by measuring the electrical capacitance values which varied due to the surface tension of wat[...]
9
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Archives of Metallurgy and Materials
EN The dilatometric and maximum bubble pressure methods were applied for the measurements of the density and surface tension of liquid (Ag-Sn)eut +Zn lead-free solders. The experiments were carried out in the temperature range from 515 to 1223 K for the alloys of the zinc concentration equal[...]
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Metrology and Measurement Systems
2017 Vol. 24, nr 1 175--184
EN Determination of the physico-chemical interactions between liquid and solid substances is a key technological factor in many industrial processes in metallurgy, electronics or the aviation industry, where technological processes are based on soldering/brazing technologies. Understanding of the bondi[...]
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Physicochemical Problems of Mineral Processing
2018 Vol. 54, iss. 4 1215--1222
EN An efficiency of flotation process is strongly dependent upon the collecting ability of air bubbles. On the other hand, the liquid film formed beetween two fully or partially mobile air/liquid interfaces being in contact has low stability, which leads to fast liquid drainage. Therefore, when they ap[...]
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Journal of KONES
EN The paper discusses the results of the studies on the surface properties and lubricating abilities of five ionic liquids compared to a high quality gear oil: Mobilube 1SHC 75W90 and two base oils: PAO-6 and SN-650. The investigated ionic liquids were: 1) tetrafluoroborate 1- benzyl-3-methylmidazoliu[...]
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Journal of KONES
EN This paper presents the results of comparative investigations on the lubricity and energetic superficial properties of selected petroleum products and new ionic liquids (ILs). Three base oils from polish petroleum refinery (PAO—6, SN-650, SN—350) and lubricity additive (Additin RC2515 EP) have been [...]
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Optica Applicata
2009 Vol. 39, nr 1 211--220
EN Knowledge of the physical parameters and optical constants of sols and sol-gel materials is important in view of their possible applications. In this work, silica and silica-titania sols were examined. Gelation time, surface tension, refractive index and optical transmittance were measured. The sol-[...]
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Polish Journal of Chemical Technology
EN The article determines experimentally the impact of the changes in the surface tension and the degree of the wetting liquid jet break-up and the final moisture content of the bed on the changes in the particle size distribution of the granulated product during the process of the wet drum granulation[...]
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Bulletin of the Polish Academy of Sciences. Chemistry
EN A new cell for both, surface tension measurements and contact angle determi-nation was constructed, to provide the same experimental conditions. Surface tension was measured by the drop weight method, and contact angle was measured using shape anal-ysis of sessile drops. New numerical algorithm for [...]
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Materials Science Poland
EN Bismuth oxide thin film was deposited by chemical bath deposition (CBD) technique onto a glass substrate. The grain size (D), dislocation density (δ) and number of crystallites per unit area (N), i.e. structural properties of the thin film were determined as 16 nm, 39.06 x 10-4 line/nm
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Archives of Metallurgy and Materials
2017 Vol. 62, iss. 3 1585--1589
EN The paper is a review of the previous investigations concerning the influence of graphite particles both on the casting properties of metal matrix composites (MMCs). The work presents the examination results of casting properties (i.e. castability and shrinkage) of the MMCs with matrices of a select[...]
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Zeszyty Naukowe / Akademia Morska w Szczecinie
EN At Maritime University of Szczecin there are carried out research works concerning utilization of biofuels on fishing vessels. There are a lot of information about relations between atomization and fuel combustion. Initial works also indicates correlation of surface tension with atomization. This ar[...]
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Physicochemical Problems of Mineral Processing
EN The measurements of advancing contact angle of water, glycerol, formamide, ethylene glycol, diiodomethane, α-bromonaphthalene, 1,2,3-tribromopropane and aqueous solution of n-octyl-β-D-glucopyranoside (OGP) on unoxidized and oxidized synthetic chalcocite at the temperatures equal to 293, 303 and 313[...]
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