Corrosion properties of AZ31 magnesium alloy and protective effects of chemical conversion layers and anodized coatings

Transactions of Nonferrous Metals Society of China (English Edition)

Volumn 17, Issue 3, 2007, Pages 502-508

  CHENG, Ying lian ^a   WU, Hai Ian ^a   CHEN, Zhen hua ^a   WANG, Hui min ^a   ZHANG, Zhao ^b   WU, You wu ^a  

^a HUNAN UNIVERSITY   (China)

^b ZHEJIANG UNIVERSITY   (China)

Author keywords

anodization; AZ31 magnesium alloy; chemical conversion layer; corrosion; electrochemical impedance spectroscopy

Indexed keywords

ANODIZATION; CHEMICAL CONVERSION BATH; CHEMICAL CONVERSION LAYER;

CHARGE TRANSFER; CORROSION; ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY; PH EFFECTS; POTENTIODYNAMIC POLARIZATION; PROTECTIVE COATINGS;

MAGNESIUM ALLOYS;

EID: 34447261654     PISSN: 10036326     EISSN: None     Source Type: Journal    
DOI: 10.1016/S1003-6326(07)60123-X     Document Type: Article

References (22)

1. GRAY J., and LUAN B. Protective coatings on magnesium and its alloys-A critical reviews [J]. J Alloys Compd 336 (2002) 88-113
2. XIAO Y., Xin-ming Z., Jian-mei C., Hao J., and Zhen-zhen D. Performance of Mg-9Gd-4Y-0.6Zr alloy with high strength and heat resistance [J]. Journal of Central South University: Science and Technology 37 5 (2006) 850-855 (in Chinese).
3. CHEN J.-m., Xin-ming Z., Yun-lai D., XIAO Y., and XIONG C.-x. Thermodynamics of melding and refining of magnesium alloys [J]. Journal of Central South University: Science and Technology 37 3 (2006) 427-432 (in Chinese).
4. ROSALBINO F., ANGELINI E., and de NEGRI S. Effect of erbium addition on the corrosion behaviour of Mg-Al alloys [J]. Intermetallics 13 (2005) 55-60
5. CHIU L., CHEN C., and YANG C. Improvement of corrosion properties in an aluminum-sprayed AZ31 magnesium alloy by a post-hot pressing and anodizing treatment [J]. Surface and Coatings Technology 191 (2005) 181-187
6. DABALA M., BRUNELLI K., NAPOLITANI E., and MAGRINI M. Cerium-based chemical conversion coating on AZ63 magnesium alloy [J]. Surface and Coatings Technology 172 (2003) 227-232
7. RUDD A., BRESLIN C., and MANSFELD F. The corrosion protection afforded by rare earth conversion coatings applied to magnesium [J]. Corrosion Science 42 2 (2000) 275-288
8. BRUNELLI K., DABALA M., CALLIARI I., and MAGRINI M. Effect of HCI pre-treatment on conversion resistance of cerium-based conversion coatings on magnesium and magnesium alloys [J]. Corrosion Science 47 4 (2005) 989-1000
9. UMEHARA H., TAKAYA M., and TERAUCHI S. Chrome-free surface treatments for magnesium alloy [J]. Surface and Coatings Technology 169/170 (2003) 666-669
10. CHONG K., and SHIH T. Conversion-coating treatment for magnesium alloys by a permanganate-phosphate solution [J]. Materials Chemistry and Physics 80 (2003) 191-200
11. KOUISNIA L., AZZI M., ZERTOUBI M., DAIARD F., and MAXIMOVITCH S. Phosphate coatings on magnesium alloy AM60 (part 1): Study of the formation and the growth of zinc phosphate films [J]. Surface and Coatings Technology 185 (2004) 58-67
12. KOUISNIA L., AZZI M., and MAXIMOVITCH S. Phosphate coatings on magnesium alloy AM60 (part 2): Electrochemical behaviour in borate buffer solution [J]. Surface and Coatings Technology 192 (2005) 239-246
13. ZHANG Y., YAN C., WANG F., LOU H., and CAO C. Study on the environmentally friendly anodizing of AZ91D magnesium alloy [J]. Surface and Coating Technology 161 (2002) 36-43
14. ZHANG Y., YAN C., WANG F., and LI W. Electrochemical behavior of anodized Mg alloy AZ91D in chloride containing aqueous solution [J]. Corrosion Science 47 11 (2005) 2816-2831
15. FUKUDA H., and MATSUMOTO Y. Formation of Ti-Si composite oxide films on Mg-Al-Zn alloy by electrophoretic deposition and anodization [J]. Electrochimica Acta 50 (2005) 5329-5333
16. HSIAO H., TSUNG H., and TSAI W. Anodization of AZ91D magnesium alloy in silicate-containing electrolytes [J]. Surface and Coatings Technology 199 (2005) 127-134
17. VERDIER S., BOINET M., MAXIMOVITCH S., and DALARD F. Formation, structure and composition of anodic films on AM60 magnesium alloy obtained by DC plasma anodizing [J]. Corrosion Science 47 6 (2005) 1429-1444
18. HSIAO H., and TSAI W. Characterization of anodic films formed on AZ91D magnesium alloy [J]. Surface and Coatings Technology 190 (2005) 299-308
19. 3 on anodization of Mg-Al-Zn alloy in 3 M KOH solution [J]. Corrosion Science 46 9 (2004) 2135-2142
20. SONG G., ATRENS A., STJOHN D., XU X., and NAIRN J. The anodic dissolution of magnesium in chloride and sulphate solutions [J]. Corrosion Science 39 10/11 (1997) 1981-2004
21. CAO C., and ZHANG J. An Introduction to Electrochemical Impedance Spectroscopy [M] (2002), Science Press, Beijing (in Chinese)
22. ZOZULIN A., and BARTAK D. Anodized coatings for magnesium alloys [J]. Metal Finishing 92 (1994) 39-44