journal article·2013-05

Decanoate conversion layer with improved corrosion protection for magnesium alloy

Yeping Li, Chunhui Tan, Gongwei Qi, Jing Guo, Xin Wang, Shuyong Zhang

Corrosion Science· Volume 70
Publisher page

Abstract

Abstract A novel decanoate conversion layer (DCL) with improved hydrophobicity for the corrosion protection of Mg alloy is fabricated and tested. XRD, EDX and FTIR results suggest that DCL comprises (CH 3 (CH 2 ) 8 COO) 2 Mg and Mg(OH) 2 . The contact angle of DCL increases with increased cycling number and reaches ca. 120° at the 30th cycle. The corrosion protection of DCL is much better than that of a decanoate inhibition layer, and close to that of a chromate conversion layer. With increased thickness, improved compactness and hydrophobicity, the decanoate conversion is proven to be a green and effective way to protect Mg alloys from corrosion.
Source: openaire · Quality: candidate unverified · Source record ↗

Research context

OpenAlex topics: Magnesium Alloys: Properties and Applications · Corrosion Behavior and Inhibition · Aluminum Alloys Composites Properties

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

References (38)

Show source-provided references
1. Magnesium: Properties – applications – potential10.1016/S0921-5093(00)01351-4 ↗
2. Protective coatings on magnesium and its alloys — a critical review10.1016/S0925-8388(01)01899-0 ↗
3. Speight · 2005
4. Corrosion of magnesium in humid air10.1016/j.corsci.2003.09.010 ↗
5. The anodic dissolution of magnesium in chloride and sulphate solutions10.1016/S0010-938X(97)00090-5 ↗
6. Understanding magnesium corrosion—a framework for improved alloy performance10.1002/adem.200310405 ↗
7. Phosphate coatings on magnesium alloy AM60 part 1: study of the formation and the growth of zinc phosphate films10.1016/j.surfcoat.2003.10.061 ↗
8. Phosphate coatings on magnesium alloy AM60 part 2: Electrochemical behaviour in borate buffer solution
9. Effects of Na2SiO3 on anodization of Mg–Al–Zn alloy in 3 M KOH solution10.1016/j.corsci.2004.02.001 ↗
10. Novel composite films prepared by sol–gel technology for the corrosion protection of AZ91D magnesium alloy10.1016/j.porgcoat.2009.08.011 ↗
11. New insights into the fundamental chemical nature of ionic liquid film formation on magnesium alloy surfaces10.1021/am900023j ↗
12. Novel hybrid sol–gel coatings for corrosion protection of AZ31B magnesium alloy10.1016/j.electacta.2008.02.015 ↗
13. The Dow Chemical Company, G.B., pat. 762, 195, 1956.
14. H. A. Evangelides, US, pat.2, 723, 952, 1955.
15. The corrosion properties of phosphate coating on AZ31 magnesium alloy: The effect of sodium dodecyl sulfate (SDS) as an eco-friendly accelerating agent10.1016/j.apsusc.2011.03.072 ↗
16. Study of vanadium-based chemical conversion coating on the corrosion resistance of magnesium alloy10.1016/j.matchemphys.2006.08.007 ↗
17. Cao · 2004
18. A chrome-free conversion coating for magnesium–lithium alloy by a phosphate-permanganate solution10.1016/j.surfcoat.2007.07.094 ↗
19. Structure and formation mechanism of phosphate conversion coating on die-cast AZ91D magnesium alloy10.1016/j.corsci.2007.08.007 ↗
20. The corrosion protection afforded by rare earth conversion coatings applied to magnesium10.1016/S0010-938X(99)00076-1 ↗
21. A non-chromate conversion coating for magnesium alloys and magnesium-based metal matrix composites10.1016/0010-938X(95)00078-X ↗
22. Microstructure and corrosion resistance of phytic acid conversion coatings for magnesium alloy10.1016/j.apsusc.2008.06.199 ↗
23. Phytic acid conversion coating on Mg–Li alloy10.1016/j.jallcom.2009.06.089 ↗
24. Microstructure and properties of oxalate conversion coating on AZ91D magnesium alloy10.1016/S1003-6326(09)60043-1 ↗
25. Effects of organic acid pickling on the corrosion resistance of magnesium alloy AZ31 sheet10.1016/j.corsci.2010.03.002 ↗
26. Inhibitors for magnesium corrosion: Metal organic frameworks10.1016/j.solidstatesciences.2006.12.007 ↗
27. Inhibition treatment of the corrosion of lead artefacts in atmospheric conditions and by acetic acid vapour: use of sodium decanoate10.1016/S0010-938X(03)00175-6 ↗
28. Mechanism of the significant improvement in corrosion protection by lowering water sorption of the coating10.1016/S0010-938X(00)00042-1 ↗
29. Hydrophobic interfacing layers for improvement of corrosion protection by polymeric coatings10.1023/A:1026277017947 ↗
30. Super – hydrophobic film prepared on zinc as corrosion barrier10.1016/j.corsci.2011.02.025 ↗
31. Corrosion inhibition using superhydrophobic films10.1016/j.corsci.2007.10.005 ↗
32. Super – hydrophobic surface treatment as corrosion protection for aluminum in seawater10.1016/j.corsci.2009.04.027 ↗
33. Super – hydrophobic film prepared on zinc and its effect on corrosion in simulated marine atmosphere10.1016/j.corsci.2012.10.025 ↗
34. Chromate conversion coatings for magnesium lithium alloys
35. Infrared anisotropy of triclinic trans-8-octadecenoic acid10.1021/j100836a516 ↗
36. Novel isoxazolium cationic Schiff base compounds as corrosion inhibitors for carbon steel in hydrochloric acid10.1016/j.corsci.2011.06.029 ↗
37. Cao · 2002
38. On the corrosion behaviour of magnesium and its alloys using electrochemical techniques10.1016/S0378-7753(96)02456-1 ↗