Analysis for determining surface free energy uncertainty by the Owen–Wendt method

Rudawska, Anna; Jacniacka, E.

doi:10.1016/j.ijadhadh.2008.09.008

Cited by 370 publications

(245 citation statements)

References 36 publications

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“…This fact can also affect the kinetics of the corrosion process. For the specimens S and S+P the surface free energy (SFE) was measured by applying the Owen-Wendt method because of its influence on the adsorption of reactants contained in the environment on the metal surface [18]. The mean value of the SEF of the shot peened specimens was 42.43mJ/m …”

Section: Characterization Of Experimental Materialsmentioning

confidence: 99%

Corrosion Resistance of AISI 316Ti Stainless Steel Subjected to Shot Peening with and without Pickling in Various Chloride Environments

et al. 2017

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SummarySurface conditions of materials affect the chemical, physical and mechanical properties of stainless steels. The main interest of this paper is to focus on corrosion properties of the AISI 316Ti stainless steel treated by shot peening and shot peening and pickling. In the last years shot peening has been widely used as a method improving fatigue properties of components under cyclical load. Because surface finishing has strong effect on corrosion susceptibility of stainless steels, e. g. pitting and created pits can initialize cracks, it is important to analyse corrosion behaviour of the material in question. In this study, the tested surfaces were characterized by SEM, EDX analyses, measurement of surface free energy and roughness. Corrosion properties were investigated in various environments by exposure, potentiodynamic cyclic and EIS tests.

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Section: Characterization Of Experimental Materialsmentioning

confidence: 99%

Corrosion Resistance of AISI 316Ti Stainless Steel Subjected to Shot Peening with and without Pickling in Various Chloride Environments

et al. 2017

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“…In other words, it reflects the imbalance of intermolecular interactions at the phase boundary of two mediums and defines as a work necessary to create a new surface unit, at equilibrium separation of two phases in reversible isothermal processes. SFE is an indicator of adhesive properties which plays an important role in the processes of adhesion [1,18]. The methods of calculation of SFE is from the contact angle measurements and based on Young equation which was derived from the equilibrium condition of forces representing surface tensions at the contact point of three phases of solid, liquid and gas.…”

Section: Wettability Measurementmentioning

confidence: 99%

“…The methods of calculation of SFE is from the contact angle measurements and based on Young equation which was derived from the equilibrium condition of forces representing surface tensions at the contact point of three phases of solid, liquid and gas. The energy equivalent of the Young equation is as follows [1,18]:…”

Section: Wettability Measurementmentioning

confidence: 99%

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Surface modification of Raw and Frit glazes by non-thermal helium plasma jet

2015

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In this study, non-thermal atmospheric pressure plasma jet (APPJ) was utilized to improve the adhesion of Raw and Frit glazes. These glazes are widely used in industry to make chinaware, decorative dishes and tiles applied at wall and floor. As they should be painted before use, increasing their adhesive properties leads to a better paint durability. Electrical and optical characteristics of the plasma jet are investigated to optimize for efficient treatment. Contact angle measurement and surface energy calculation demonstrate a drastic increase after the plasma treatment indicating wettability and paintability enhancement. Moreover, atomic force microscopy and X-ray photoelectron spectroscopy analyses were performed on the specimens to explore the influence of helium plasma jet on the physical and chemical properties of the glazes, microscopically. AFM analysis reveals surface etching resulted from the bombardment of the solid surfaces by the APPJ using helium fed gas. The process aims to enhance adhesive properties of glaze surfaces.

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“…Measuring-liquid drops of 2 mm 3 were deposited by means of a micropipette. 14,32 Due to the heterogeneity of the material, six drops were put on each sample. The measurements were carried out twice: at the time of the application of the drops, i.e., at 0 min and at 40 min.…”

Section: Determination Of the Contact Angle And Surface Free Energymentioning

confidence: 99%

Surface free energy of hydrophobic coatings of hybrid-fiber-reinforced high-performance concrete

Barnat-Hunek¹,

Smarzewski²

2015

Mater. Tehnol.

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The aim of the research presented in the paper was to evaluate the feasibility of using hydrophobic preparations based on organosilicon compounds for the protection treatment of hybrid-fiber-reinforced high-performance concrete (FRHPC) surfaces. The wettability of concrete has a direct effect on the durability and corrosion resistance. The wetting properties of FRHPC were evaluated through the measurement of the contact angle between the surfaces of these materials with either water or glycerine used as probe liquids. On this basis, the surface free energy (SFE) was determined. The polar and disperse components of SFE were obtained by means of the Owens-Wendt method. Three different siloxane preparations were deposited onto seven types of concrete with the fiber content ranging from 0 % to 1 %. In order to investigate the effect on the strength, the granodiorite aggregate in concrete mixes 5, 6, 7 was replaced with granite. The basic characteristics of the concrete strength were examined: the tensile splitting strength, the compressive strength, the modulus of elasticity. A SEM examination of the coated concrete surfaces confirmed that preparations A-C can effectively cover the voids and pores present in the concrete surfaces. The presented results indicate that the surfaces of the concrete with a silane film had a wide range of SFE, depending on the kind of agent. SFE depended on the chemical reactivity of the silanes used, the type of solvent, the viscosity and surface tension of the solution. The evaluation of the contact angle and SFE helped to efficiently select the most appropriate preparation. Keywords: surface free energy (SFE), contact angle, hydrophobization, high-performance concrete, hybrid fiber, Owens-Wendt method Namen raziskave, predstavljene v~lanku, je bil oceniti izvedljivost uporabe hidrofobne obdelave na osnovi organosilikonskih spojin za za{~ito povr{ine zmogljivega betona (FRHPC), oja~anega s hibridnimi vlakni. Omo~ljivost betona ima neposreden vpliv na zdr`ljivost in odpornost proti koroziji. Omo~ljivost FRHPC je bila ocenjena z merjenjem sti~nega kota med povr{ino teh materialov pri uporabi vode in glicerina kot preizkusne teko~ine. Na tej osnovi je bila dolo~ena prosta energija povr{ine (SFE). Polarne in razpr{ilne komponente SFE so bile dolo~ene z Owen-Wendtovo metodo. Trije razli~ni pripravki siloksana so bili naneseni na sedem vrst betona z vsebnostjo vlaken od 0 % do 1 %. Za preiskavo vpliva na trdnost je bil zrnati granodiorit nadome{~en v betonskih me{anicah 5, 6 in 7 z granitom. Preiskovane so bile osnovne zna~ilnosti trdnosti betona: natezna cepilna trdnost, tla~na trdnost in modul elasti~nosti. SEM-preiskave pokrite povr{ine betona so potrdile, da priprave A-C lahko u~inkovito prekrijejo praznine in pore, ki so na povr{ini betona. Prikazani rezultati ka`ejo, da ima povr{ina betona s plastjo silanov velik razpon SFE, odvisno od vrste predstavnika. SFE je odvisna od kemijske reaktivnosti uporabljenega silana, vrste topila, viskoznosti in povr{inske napetosti raztopine. Ocena kota...

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Analysis for determining surface free energy uncertainty by the Owen–Wendt method

Cited by 370 publications

References 36 publications

Corrosion Resistance of AISI 316Ti Stainless Steel Subjected to Shot Peening with and without Pickling in Various Chloride Environments

Corrosion Resistance of AISI 316Ti Stainless Steel Subjected to Shot Peening with and without Pickling in Various Chloride Environments

Surface modification of Raw and Frit glazes by non-thermal helium plasma jet

Surface free energy of hydrophobic coatings of hybrid-fiber-reinforced high-performance concrete

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