Effect of Surface Properties on Corrosion Resistance of ZK60 Mg Alloy Microarc Oxidation Coating

被引：12

作者：

Lee, Jeou-Long ^{[1
]}

Jian, Shun-Yi ^{[2
]}

Kuo, Kwan-Nin ^{[2
]}

You, Jhu-Lin ^{[2
]}

Lai, Yen-Tze ^{[1
]}

机构：

[1] Lunghwa Univ Sci & Technol, Dept Chem & Mat Engn, Taoyuan 33306, Taiwan

[2] Natl Def Univ, Chung Cheng Inst Technol, Dept Chem & Mat Engn, Taoyuan 335, Taiwan

来源：

IEEE TRANSACTIONS ON PLASMA SCIENCE | 2019年 / 47卷 / 02期

关键词：

ZK60; corrosion resistance; microarc oxidation (MAO); PLASMA ELECTROLYTIC OXIDATION; MAGNESIUM ALLOY; PEO COATINGS; PARAMETERS; MORPHOLOGY; ADDITIVES; UNIPOLAR; BEHAVIOR; FILMS; AL;

D O I：

10.1109/TPS.2018.2868838

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Microarc oxidation (MAO) is performed on ZK60 magnesium alloy at 250-400 V. For this paper, a direct current (dc), unipolar (UP), and bipolar (BP) power modes are used to produce a dense and uniform oxide coating that increases the corrosion resistance of ZK60 alloy. The compositions and microstructures of the oxide coatings that are formed using different working parameters are determined by X-ray diffraction and scanning electron microscopy. The corrosion resistance of the coatings is evaluated in a 3.5 wt% NaCl solution using potentiodynamic polarization tests. The average roughness is then measured. The results show that the mode of the applied power (dc, UP, and BP modes) has a significant effect on the coating's morphology and corrosion resistance. For the same pulsed-power supply, the number of pores in the coating decreases as the applied voltage is increased and the average pore size increases so cracks gradually appear. The ZK60 magnesium alloy that is prepared at 400 V using BP power has the least porosity and the best corrosion resistance.

引用

页码：1172 / 1180

页数：9

共 20 条

[1] Arabal R., 2011, SURF COAT TECH, V203, P2207
[2] Thermo-physical properties of plasma electrolytic oxide coatings on aluminium
Curran, JA
Clyne, TW
[J]. SURFACE & COATINGS TECHNOLOGY, 2005, 199 (2-3) : 168 - 176
[3] Effect of electrolyte additives on performance of plasma electrolytic oxidation films formed on magnesium alloy AZ91D
Duan, Hongping
Yan, Chuanwei
Wang, Fuhui
[J]. ELECTROCHIMICA ACTA, 2007, 52 (11) : 3785 - 3793
[4] Study of the structure and corrosion behavior of PEO coatings on AM50 maginesium. alloy by electrochemical impedance spectroscopy
Ghasemi, A.
Raja, V. S.
Blawert, C.
Dietzel, W.
Kainer, K. U.
[J]. SURFACE & COATINGS TECHNOLOGY, 2008, 202 (15) : 3513 - 3518
[5] The role of anions in the formation and corrosion resistance of the plasma electrolytic oxidation coatings
Ghasemi, A.
Raja, V. S.
Blawert, C.
Dietzel, W.
Kainer, K. U.
[J]. SURFACE & COATINGS TECHNOLOGY, 2010, 204 (9-10) : 1469 - 1478
[6] PEO coatings obtained on an Mg-Mn type alloy under unipolar and bipolar modes in silicate-containing electrolytes
Gnedenkov, S. V.
Khrisanfova, O. A.
Zavidnaya, A. G.
Sinebryukhov, S. L.
Egorkin, V. S.
Nistratova, M. V.
Yerokhin, A.
Matthews, A.
[J]. SURFACE & COATINGS TECHNOLOGY, 2010, 204 (14) : 2316 - 2322
[7] Black anodic coatings for space applications: Study of the process parameters, characteristics and mechanical properties
Goueffon, Yann
Arurault, Laurent
Mabru, Catherine
Tonon, Claire
Guigue, Pascale
[J]. JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2009, 209 (11) : 5145 - 5151
[8] Biomedical coatings on magnesium alloys - A review
Hornberger, H.
Virtanen, S.
Boccaccini, A. R.
[J]. ACTA BIOMATERIALIA, 2012, 8 (07) : 2442 - 2455
[9] The effect of current mode and discharge type on the corrosion resistance of plasma electrolytic oxidation (PEO) coated magnesium alloy AJ62
Hussein, R. O.
Zhang, P.
Nie, X.
Xia, Y.
Northwood, D. O.
[J]. SURFACE & COATINGS TECHNOLOGY, 2011, 206 (07) : 1990 - 1997
[10] Spectroscopic study of electrolytic plasma and discharging behaviour during the plasma electrolytic oxidation (PEO) process
Hussein, R. O.
Nie, X.
Northwood, D. O.
Yerokhin, A.
Matthews, A.
[J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2010, 43 (10)

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