Microstructure and formation mechanism of Ce-based chemical conversion coating on 6063 Al alloy

Transactions of Nonferrous Metals Society of China (English Edition)

Volumn 19, Issue 3, 2009, Pages 592-600

  CHEN, Dong chu ^a,b   LI, Wen fang ^a   GONG, Wei hui ^a   WU, Gui xiang ^a   WU, Jian feng ^b  

^a SOUTH CHINA UNIVERSITY OF TECHNOLOGY   (China)

^b FOSHAN UNIVERSITY   (China)

Author keywords

aluminum alloy; conversion coating; rare earth element

Indexed keywords

6063 AL ALLOY; AMMONIUM SALT; CE CONTENTS; CHEMICAL CONVERSION COATINGS; COATING FORMATION; COATING MORPHOLOGY; CONVERSION COATING; CONVERSION COATINGS; ELECTROCHEMICAL REACTIONS; EPMA; FORMATION MECHANISM; METAL HYDROXIDE; METAL OXIDES; PH VALUE; POTENTIAL CHANGE; SEM/EDS; TIME PERIODS; XPS; XRD;

ALUMINA; ALUMINUM; ALUMINUM ALLOYS; AMMONIUM COMPOUNDS; CERIUM; CERIUM COMPOUNDS; CHLORINE COMPOUNDS; COATINGS; CORROSION RESISTANCE; HYDRATES; MANGANESE; MANGANESE COMPOUNDS; METALLIC COMPOUNDS; MORPHOLOGY;

CERIUM ALLOYS;

EID: 66449095482     PISSN: 10036326     EISSN: None     Source Type: Journal    
DOI: 10.1016/S1003-6326(08)60318-0     Document Type: Article

References (16)

1. ABDEL S.H. Corrosion protection of aluminum composites by silicate/cerate conversion coating [J]. Surf Coatings Tech 200 12/13 (2006) 3786-3792
2. BIBBER J. Trivalent chrome conversion coating for zinc and zinc alloys [J]. Metal Finishing 105 10 (2007) 425-435
3. ABDEL S.H. Advanced nano-particles anti-corrosion ceria based sol gel coatings for aluminum alloys [J]. Mater Lett 60 21/22 (2006) 2633-2637
4. NORDLIEN J.H., WALMSLEY J.C., ØTERBERG H., and NISANCIOGLU K. Formation of a zirconium-titanium based conversion layer on AA 6060 aluminum [J]. Surf Coatings Tech 153 1 (2002) 72-78
5. BETHENCOURT M., BOTANA J., CANO M.J., and MARCOS M. High protective, environmental friendly and short-time developed conversion coatings for aluminum alloys [J]. Appl Surf Sci 189 1/2 (2002) 162-173
6. HUGHES A.E., GORMAN J., HARVEY T.G., MCCULLOCH D., and TOH S.K. SEM and RBS characterization of a cobalt-based conversion coating process on AA2024-T3 and AA7075-T6 [J]. Surf Interf Anal 36 13 (2004) 1585-1591
7. WILLIAM G.F., O'KEEFE M.J., ZHOU H.-f., and GRANT J.T. Characterization of cerium-based conversion coatings for corrosion protection of aluminum alloys [J]. Surf Coatings Tech 155 2/3 (2002) 208-213
8. ANDRÉ D., and PETITJEAN J.P. Study of the deposition of cerium oxide by conversion onto aluminum alloys [J]. Surf Coatings Tech 194 1 (2005) 1-9
9. CAMPESTRINI P., TERRYN H., HOVESTAD A., and de WIT J.H.W. Formation of a cerium-based conversion coating on AA2024: Relationship with the microstructure [J]. Surf Coatings Tech 176 3 (2004) 365-381
10. GU B.-s., and LIU J.-h. Corrosion inhibition mechanism of rare earth metal on LC4 A1 alloy with spilt cell technique [J]. J Rare Earths 24 1 (2006) 89-96 (in Chinese).
11. LI J., SUN J., and AN C.-q. Research development of aluminium alloy with chromate-free passivation [J]. Surf Tech 37 4 (2008) 60-62 (in Chinese).
12. BETHENCOURT M., BOTANA F.J., CANO M.J., and MARCOS M. Advanced generation of green conversion coatings for aluminum alloys [J]. Appl Surf Sci 238 1/4 (2004) 278-281
13. LIU Y.-h. Electrochemical determination technology [M] (1987), Aeronautic Institute of Beijing Press, Beijing (in Chinese).
14. SHAO M.-h., HUANG R.-s., FU Y., and LIN C.-j. Investigation of formation and inhibition mechanism of cerium conversion films on Al 2024 alloy [J]. J Rare Earths 20 6 (2002) 640-645 (in Chinese).
15. BÖHM S., GREEF R., MCMURRAY H.N., POWELL S.M., and WORSLEY D.A. Kinetic and mechanistic studies of rare earth-rich protective film formation using in situ ellipsometry [J]. J Electrochem Soc 147 9 (2000) 3286-3293
16. CHEN S., CHEN X.-f., LIU C.-y., ZHU L., and SUN J.-q. Rare earth conversion coatings of aluminum alloys [J]. Mat Prot 8 36 (2003) 33-36 (in Chinese).