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2005, vol. 46, br. 2, str. 11-22
Uticaj elektrohemijski taloženih legura cinka na čeliku na zaštitna svojstva epoksidne kataforetske prevlake
Univerzitet u Beogradu, Tehnološko-metalurški fakultet
Sažetak
Površina čelika je modifikovana elektrohemijskim taloženjem legura cinka sa elementima grupe gvožđa (Ni, Сo i Fe) i prevlakom cinka, pre nanošenja kataforetske epoksidne prevlake. Ispitivanje uticaj sastava rastvora za taloženje i raznih parametara taloženja na hemijski i fazni sastav legura cinka, kao i na gustine struje korozije legura. Pokazano je da sastav rastvora za taloženje, njegova temperatura i gustina struje taloženja imaju veliki uticaj na koroziono ponašanje legura cinka, kao i na korozionu stabilnost zaštitnih sistema legura cinka / epoksidna prevlaka na čeliku. Od svih ispitivanih legura Zn-Ni legura dobijena taloženjem iz hloridnog rastvora sa 2 A dm2 ima najmanju gustinu struje korozije. Zaštitna svojstva sistema legura cinka / epoksidna prevlaka na čeliku su određivana merenjem vrednosti otpornosti elektrolita u рorama prevlake i otpornosti prenosu naelektrisanja kroz graničnu površinu metal-elektroli (metoda spektroskopije elektrohemijske impedancije (SEI)). Sorpcione karakteristike su određivane gravimetrijskim merenjima, a termička stabilnost termogravimetrijskom analizom. Ispitivane su brzine izdvajanja vodonika, kao prvog stupnja u kataforetskom taloženju epoksidne prevlake, na različitim supstratima, kao i kvašljivost supstrata rastvorom polimera. Pokazano je kako ova dva faktora zajedno utiču na poroznost i termičku stabilnost epoksidnih prevlaka. S obzirom na najveće vrednosti otpornosti elektrolita u рorama prevlake i otpornosti prenosa naelektrisanja kroz graničnu površinu metal-elektrolit od svih ispitivanih legura najbolja svojstva pokazuje legura Zn-Ni a najlošija Zn-Fe. Pokazano je, takođe, da se početak korozionih procesa na čeliku, ispod prevlaka legura, najkasnije javlja u slučaju Zn-Ni legure.
Reference
*** (1969) Power diffraction file. Philadelphia, PA: American Society for Testing and Materials, Inorganic volume PD/S 5iRB, Sets 1-5
Aćamović, N.M., Dražić, D.M., Mišković-Stanković, V.B. (1995) Influence of substrate on the formation and growth kinetics of cathodic electrocoat paint. Progress in Organic Coatings, 25(3), 293-307
Alkaine, C.V.D., Boucherit, M.N. (1997) Potentiostatic Growth of ZnO on Zn: Application of an Ohmic Model. Journal of The Electrochemical Society, 144(10): 3331
Bajat, J.B., Mišković-Stanković, V.B., Kačarević-Popović, Z.M. (2002) Electrochemical and sorption characteristics and thermal stability of epoxy coatings electrodeposited on steel modified by Zn-Co alloy. Progress in Organic Coatings, vol. 45, br. 4, str. 379-387
Bajat, J.B., Mišković-Stanković, V.B., Kačarević-Popović, Z.M. (2003) The influence of steel surface modification by electrodeposited Zn-Fe alloys on the protective behaviour of an epoxy coating. Progress in Organic Coatings, vol. 47, br. 1, str. 49-54
Bajat, J.B. (2003) Beograd: Tehnološko-metalurški fakultet, doktorska disertacija
Bajat, J.B., Maksimović, M.D., Mišković-Stanković, V.B., Zec, S. (2001) Electrodeposition and characterization of Zn-Ni alloys as sublayers for epoxy coating deposition. Journal of Applied Electrochemistry, vol. 31, br. 3, str. 355-361
Bajat, J.B., Mišković-Stanković, V.B., Maksimović, M.D., Dražić, D.M., Zec, S. (2002) Electrochemical deposition and characterization of Zn-Co alloys and corrosion protection by electrodeposited epoxy coating on Zn-Co alloy. Electrochimica Acta, vol. 47, br. 25, str. 4101-4112
Bajat, J.B., Mišković-Stanković, V.B., Maksimović, M.D., Dražić, D.M., Zec, S.P. (2004) Elektrohemijsko taloženje i karakterizacija Zn-Fe legura. Journal of the Serbian Chemical Society, vol. 69, br. 10, str. 807-815
Beck, F. (1981) Electrode position of paint. u: Bockris J.O'M., Conway В.E., Yeager E., White R.E. [ur.] Comprehensive Treatise of Electrochemistry, New York-London: Plenum Press, vol. 2, str. 537
Boukamp, B.A. (1986) A nonlinear least squares fit procedure for analysis of immittance data of electrochemical systems. Solid State Ionics, 20(1), 31-44
Deflorian, F., Fedrizzi, L., Bonora, P.L. (1994) Determination of the reactive area of organic coated metals using the breakpoint method. Corrosion, 50, 113
Dražić, D.M., Mišković-Stanković, V.B. (1990) The effect of resin concentration and electrodeposition bath temperature on the corrosion behaviour of polymer-coated steel. Progress in Organic Coatings, 18(3): 253
Dražić, D.M., Aćamović, N.M., Mišković-Stanković, V.B. (1993) Glas Srpske akademije nauka i umetnosti, Beograd, CCCLXXIX, 30, 29
Fratesi, R., Lunazzi, G., Roventi, G. (1997) Organic and inorganic coatings for corrosion prevention. u: Fedrizzi L., Bonora P.L. [ur.] Organic and Inorganic Coatings for Corrosion Prevention, London: EFC Publication Institute of Materials, str. 130, br. 20
Fratessi, R., Roventi, G. (1992) Electrodeposition of zinc-nickel alloy coatings from a chloride bath containing NH4Cl. Journal of Applied Electrochemistry, 22(7): 657
Graedel, T.E. (1989) Corrosion mechanisms for zinc exposed to the atmosphere. Journal of The Electrochemical Society, 136 (4): 193C
Hall, D.E. (1983) Electrodeposited zinc-nickel alloy coatings: A review. Plat Surf Finish, 70, 59
Karwas, C., Hepel, T. (1988) J Electrochem Soc, 135, 839
Kautek, W., Sahre, M., Paatsch, W. (1994) Transition metal effects in the corrosion protection of electroplated zinc alloy coatings. Electrochimica Acta, 39, 1151
Korshak, V.V. (1971) The chemical structure and thermal characterization of polymers. Jerusalem: Keter Press
Leidheiser, H. (1979) Progress in Organic Coatings, 7, 79
Loar, G.W., Romer, K.R., Aoe, T.J. (1991) Plat Surf Finish, 3, 74
Misković-Stanković, V.B., Zotović, J.B., Kačarević-Popović, Z.M., Maksimović, M.D. (1999) Corrosion behaviour of epoxy coatings electrodeposited on steel electrochemically modified by Zn-Ni alloy. Electrochimica acta, 44(24): 4269-4277
Mišković-Stanković, V.B., Maksimović, M.D., Kačarevic-Popović, Z.M., Zotović, J.B. (1998) The sorption characteristics and thermal stability of epoxy coatings electrodeposited on steel and steel electrochemically modified by Fe-P alloys. Progress in organic coatings, 33(1): 68-75
Narasimhamurthy, V., Sheshadri, B.S. (1996) Physicochemical properties of Zn-Fe alloy deposits from an alkaline sulfate bath containing triethanolamine. Journal of Applied Electrochemistry, 26(1), 90-4
Pech-Canul, M.A., Ramanauskas, R., Maldonado, L. (1997) An electrochemical investigation of passive layers formed on electrodeposited Zn and Zn-alloy coatings in alkaline solutions. Electrochimica Acta, 42, 255
Pushpavanam, M., Natarajan, S.R., Balakrishnan, K., Sharma, L.R. (1991) Corrosion behaviour of electrodeposited zinc-nickel alloys. J Appl. Electrochem, 21, 642
Rajagopalan, S.R. (1972) Electrodeposition of nickel-zinc alloys. Met Finish, 70, 52
Stankeviciute, A., Leinartas, K., Bikulcius, G., Virbalyte, D., Sudavicius, A., Juzeliunas, E. (1998) J Appl Electrochem, 28, 89-95
Swathirajan, S. (1987) Journal of Electroanalytical Chemistry, 221, 211
 

O članku

jezik rada: srpski
vrsta rada: pregledni članak
objavljen u SCIndeksu: 02.06.2007.