Effects of CH3OH Addition on Plasma Electrolytic Oxidation of AZ31 Magnesium Alloys

HE Yongyi (何泳仪); CHEN Li (陈砺); YAN Zongcheng (严京城); ZHANG Yalei (张亚磊)

doi:10.1088/1009-0630/17/9/07

Plasma Science and Technology > 2015 > 17(9): 761-766. > DOI: 10.1088/1009-0630/17/9/07

HE Yongyi (何泳仪), CHEN Li (陈砺), YAN Zongcheng (严京城), ZHANG Yalei (张亚磊). Effects of CH3OH Addition on Plasma Electrolytic Oxidation of AZ31 Magnesium Alloys[J]. Plasma Science and Technology, 2015, 17(9): 761-766. DOI: 10.1088/1009-0630/17/9/07

Citation:

PDF (302 KB)

Effects of CH3OH Addition on Plasma Electrolytic Oxidation of AZ31 Magnesium Alloys

College of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China

Funds: s u p p o r t e d b y N a t i o n a l N a t u r a l S c i e n c e F o u n d a t i o n o f C h i n a ( N o . 2 1 3 7 6 0 8 8 ), t h e P r o j e c t o f P r o d u c t i o n, E d u c a t i o n a n d R e s e a r c h, Gu a n g d o n g P r o v i n c e a n d Mi n i s t r y o f E d u c a t i o n ( N o s . 2 0 1 2 B 0 9 1 0 0 0 6 3, 2 0 1 2 A 0 9 0 3 0 0 0 1 5 ), a n d Gu a n g z h o u S c i e n c e a n d T e c h n o l o g y P l a n P r o j e c t s o f C h i n a ( N o . 2 0 1 4 Y 2 - 0 0 0 4 2 )

More Information

Received Date: September 09, 2014

Graphical Abstract

Abstract

Abstract

Plasma electrolytic oxidation (PEO) films on AZ31 magnesium alloys were prepared in alkaline silicate electrolytes (base electrolyte) with the addition of different volume concentra?tions of CH3OH, which was used to adjust the thickness of the vapor sheath. The compositions, morphologies, and thicknesses of ceramic layers formed with different CH3OH concentrations were determined via X-ray diffraction (XRD), energy-dispersive spectroscopy (EDS), and scanning elec?tron microscopy (SEM). Corrosion behavior of the oxide films was evaluated in 3.5 wt.% NaCl solution using potentiodynamic polarization tests. PEO coatings mainly comprised Mg, MgO, and Mg2SiO4. The addition of CH3OH in base electrolytes affected the thickness, pores diameter, and Mg2SiO4 content in the films. The films formed in the electrolyte containing 12% CH3OH exhibited the highest thickness. The coatings formed in the electrolyte containing different con?centrations of CH3OH exhibited similar corrosion resistance. The energy consumption of PEO markedly decreased upon the addition of CH3OH to the electrolytes. The result is helpful for energy saving in the PEO process.
- plasma electrolytic oxidation,
- methanol,
- vapor sheath,
- ceramic films

FullText(HTML)

References (36)

References

[1]	Sandhyarani M, Rameshbabu N,Venkateswarlu K,et al. 2013, J. Alloy Compd., 553:32
[2]	Gao Y, Yerokhin A, Mathews A. 2014, Appl. Surf. Sci.,316:558
[3]	Ko Y G, Lee E S, Shin D H. 2014, Appl. Surf. Sci., 586:357
[4]	Sundararajan G, Krishna L R. 2003, Surf. Coat. Technol., 167: 269
[5]	Snizhko L O, Yerokhin A L. 2004, Electrochim. Acta, 49:2085
[6]	Yerokhin A L, Nie X, Leyland A. 2000, Surf. Coat. Technol., 130: 195
[7]	Matykina E, Arrabal R, Skeldon P, et al. 2010, Surf. Coat. Technol., 204: 2142
[8]	Blawert C, Heitmann V, Dietzel W, et al. 2007,Surf. Coat. Technol., 201: 8709
[9]	Simka W, Sowa M, Socha P, et al. 2013, Electrochim. Acta, 104:518
[10]	Nie X, Meletis E I, Jiang J C, et al. 2002, Surf. Coat. Technol., 149:245
[11]	Gnedenkov S V, Khrisanfova O A, Zavidnaya A G, et al. 2001, Surf. Coat. Technol., 145 :146
[12]	Yerokhin A L, Shatrov A, Samsonov V, et al. 2005, Surf. Coat. Technol., 199: 150
[13]	Tang H, Sun Q, Xin T, et al. 2012, Curr. Appl. Phys., 12:284
[14]	Wang Y M, Tian H, Shen X E, et al. 2013, Ceram. Int., 39:2869
[15]	Al Bosta M M S, Ma K-J, Chien H-H. 2013, Infrared Phys. Technol., 60:323
[16]	Wang Z W, Wang Y M, Liu Y, et al. 2011, Curr. Appl. Phys., 11:1405
[17]	Wang L, Chen L, Yan Z, et al. 2009, J. Alloy Compd., 480:469
[18]	Yerokhin A L, Nie X, Leyland A, et al. 1999, Surf. Coat. Technol., 122: 73
[19]	Wang L, Chen L, Yan Z, et al. 2010, Surf. Coat. Technol., 205:1651
[20]	Yerokhin A L, Snizhko L O, Gurevina N L, et al. 2003, J. Phys. D: Appl. Phys., 36:2110
[21]	Belevantsev I. V, et al. 1998, Micro-Plasma Electrochemical Process. New York, Springer
[22]	Gupta P, Tenhundfeld G, Daigle E O, et al. 2007, Surf. Coat. Technol., 201: 8746
[23]	Guo H, An M, Xu S, et al. 2005, Thin Solid Films, 485:53
[24]	Hussein R O, Nie X, Northwood D O, et al. 2010, J. Phys. D: Appl. Phys., 43:105203
[25]	Ghasemi A, Raja V S, Blawert C, et al. 2010, Surf. Coat. Technol., 204:1469
[26]	Duan H, Yan C, Wang F. 2007, Electrochim. Acta, 52:3785
[27]	Hussein R O, Nie X, Northwood D O. 2013, Electrochim. Acta, 112:111
[28]	Yao Z, Jiang Z, Wu X, et al. 2005, Surf. Coat. Technol., 200: 2445
[29]	Sah S P, Aoki Y, Habazaki H. 2010, Mater. Trans., 51:94
[30]	Kazanski B, Kossenko A, Zinigrad M, et al. 2013, Appl. Surf. Sci., 287: 461
[31]	Bosta M M S A., Ma K J. 2014, Appl. Surf. Sci., 308:121
[32]	Montazeri M, Dehghanian C, Shokouhfar M, et al. 2011, Appl. Surf. Sci., 257:7268
[33]	Shokouhfar M, Dehghanian C, Montazeri M, et al. 2012, Appl. Surf. Sci., 258:2416
[34]	Veys-Renaux D, Barchiche C E, Rocca E. 2014, Surf. Coat. Technol., 251:232
[35]	Mori Y, Koshi A, Liao J, et al. 2014, Corros. Sci., 88:254
[36]	Duan G, Gao X. 2010, Ordnance Mate. Sci. Eng., 33:102