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dc.contributor.authorPiwoński, Ireneusz
dc.contributor.authorKisielewska, Aneta
dc.description.abstractThe goal of this study was the investigation of the effectiveness of dialkyldithiophosphate acids (HDDPs) films in improving the tribological properties of thin, sol– gel derived titania coatings. Amorphous, anatase, and rutile titania coatings were obtained using sol–gel dip–coating deposition after treatment at 100, 500, and 1,000 C, respectively. Titania coatings were then modified from the liquid phase by HDDPs acids having dodecyl-(C12), tetradecyl-(C14), and hexadecyl-(C16) alkyl chains deposited by dip–coating (DC) and Langmuir–Blodgett (LB) methods. The influence of the deposition procedure, the length of the HDDPs alkyl chain and the type of titania substrate on the surface morphology and tribological properties were studied. It was found, using wetting contact angle measurements, that these modifications of titania coatings decrease the surface free energy and increase its hydrophobicity. The surface topography imaged by Atomic force microscopy (AFM), exhibit island-like or agglomerate features for the DC deposition method, while smooth topographies were observed for LB depositions. Tribological tests were conducted by means of a microtribometer operating in the normal load range 30–100 mN. An enhancement of tribological properties was observed upon modification, as compared to unmodified titania.pl_PL
dc.relation.ispartofseriesTribology Letters;45/2012
dc.rightsUznanie autorstwa 3.0 Polska
dc.subjectAntiwear additivespl_PL
dc.subjectTitanium oxidespl_PL
dc.subjectSurface energypl_PL
dc.titleDialkyldithiophosphate Acids (HDDPs) as Effective Lubricants of Sol–Gel Titania Coatings in Technical Dry Friction Conditionspl_PL
dc.contributor.authorAffiliationDepartment of Materials Technology and Chemistry, University of Lodzpl_PL
dc.referencesSpikes, H.: The history and mechanisms of ZDDP. Tribol. Lett. 17, 469–489 (2004)pl_PL
dc.referencesNicholls, M.A., Do, T., Norton, P.R., Kasrai, M., Bancroft, G.M.: Review of the lubrication of metallic surfaces by zinc dialkyldithiophosphates. Tribol. Int. 38, 15–39 (2005)pl_PL
dc.referencesBarnes, A.M., Bartle, K.D., Thribon, V.R.A.: A review of zinc dialkyldithiophosphates (ZDDPS): characterization and role in the lubricating oil. Tribol. Int. 34, 389–395 (2001)pl_PL
dc.referencesGraham, J.F., McCague, C., Norton, P.R.: Topography and nanomechanical properties of tribochemical films derived from zinc dialkyl and diaryl dithiophosphates. Tribol. Lett. 6, 149–157 (1999)pl_PL
dc.referencesSmith, G.C., Bell, J.C.: Multi-technique surface analytical studies of automotive anti-wear films. Appl. Surf. Sci. 144–145, 222–227 (1999)pl_PL
dc.referencesMcFadden, Ch., Soto, C., Spencer, N.D.: Adsorption and surface chemistry in tribology. Tribol. Int. 30, 881–888 (1997)pl_PL
dc.referencesLi, Y.-R., Pereira, G., Lachenwitzer, A., Kasrai, M., Norton, P.R.: X-ray absorption spectroscopy and morphology study on antiwear films derived from ZDDP under different sliding frequencies. Tribol. Lett. 27, 245–253 (2007)pl_PL
dc.referencesIto, K., Martin, J.M., Minfray, C., Kato, K.: Low-friction tribofilm formed by the reaction of ZDDP on iron oxide. Tribol. Int. 39, 1538–1544 (2006)pl_PL
dc.referencesHsu, S.M.: Molecular basis of lubrication. Tribol. Int. 37, 553–559 (2004)pl_PL
dc.referencesChen, Y., Liu, W., Ye, Ch., Yu, L., Qi, S.: Preparation and characterization of self-assembled alkane phosphate monolayers on glass substrate coated with nano-TiO2 thin film. Mater. Res. Bull. 36, 2605–2612 (2001)pl_PL
dc.referencesHofer, R., Textor, M., Spencer, N.D.: Alkyl phosphate monolayers, self-assembled from aqueous solution onto metal oxide surfaces. Langmuir 17, 4014–4020 (2001)pl_PL
dc.referencesTextor, M., Ruiz, L., Rossi, A., Feldman, K., Ha¨hner, G., Spencer, N.D.: Structural chemistry of self-assembled monolayers of octadecylphosphoric acid on tantalum oxide surfaces. Langmuir 16, 3257–3271 (2000)pl_PL
dc.referencesBrovelli, D., Ha¨hner, G., Ruiz, L., Hofer, R., Kraus, G., Waldner, A., Schlo¨sser, J., Oroszlan, P., Ehrat, M., Spencer, N.D.: Highly oriented, self-assembled alkane phosphate monolayers on tantalum( V) oxide surfaces. Langmuir 15, 4324–4327 (1999)pl_PL
dc.referencesMarguerettaz, X., Fitzmaurice, D.: Structures of monolayers of long-chain aliphatic acids deposited on metal, conducting glass, and nanocrystalline semiconductor substrates using Langmuir– Blodgett techniques. Langmuir 13, 6769–6779 (1997)pl_PL
dc.referencesTravers, E., Gnappi, G., Montenero, A., Gusmano, G.: Ceramic thin films by sol–gel processing as novel materials for integrated sensor. Sensor. Actuat. B-Chem. 31, 59–70 (1996)pl_PL
dc.referencesYusuf, M.M., Imai, H., Hirashima, H.: Preparation of mesoporous TiO2 thin films by surfactant templating. J. Non-Cryst. Solids. 285, 90–95 (2001)pl_PL
dc.referencesYamaguchi, E.S., Ryason, P.R., Labrador, E.Q.: Inelastic electron tunneling spectra of neutral and basic zinc dithiophosphates on native aluminum oxide surfaces. Tribol. T. 38, 243–252 (1995)pl_PL
dc.referencesGallopoulos, N.E., Murphy, C.K.: Interactions between a zinc dialkyl phosphorodithioate and lubricating oil dispersants. ASLE Transactions 14, 1–7 (1971)pl_PL
dc.referencesPiwon´ski, I.: Preparation method and some tribological properties of porous titanium dioxide layers. Thin Solid Films 515, 3499–3506 (2007)pl_PL
dc.referencesPiwon´ski, I., Ilik, A.: Vapor phase modification of sol–gel derived titania (TiO2) surfaces. Appl. Surf. Sci. 253, 2835–2840 (2006)pl_PL
dc.referencesVan Oss, C.J., Good, R.J., Chaudhury, M.K.: Additive and nonadditive surface tension components and the interpretation of contact angles. Langmuir 4, 884–891 (1988)pl_PL
dc.referencesOnoe, H., Matsumoto, K., Shimoyama, I.: Three-dimensional micro-self-assembly using hydrophobic interaction controlled by self-assembled monolayers. J. Microelectromech. Syst. 13, 603–611 (2004)pl_PL
dc.referencesYamaguchi, E.S., Primer, R.L., Arago´n, S.R., Labrador, E.Q.: Dynamic light scattering studies of neutral diisobutyl zinc dithiophosphate. Tribology Trans 40, 330–338 (1997)pl_PL
dc.referencesMartin, P., Szablewski, M.: Tensiometers and Langmuir– Blodgett troughs operating manual NIMA Technology, 5th edn. (1999)pl_PL

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Uznanie autorstwa 3.0 Polska
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