Effect of processing time on microstructure of surface and corrosion resistance of coatings resulting from plasma electrolytic oxidation on titanium alloy in hydroxyapatite nano-particles electrolyte

Document Type : Article

Authors

1 Department of Mechanical Engineering, Shahid Rajaee Teacher Training University, Tehran, P.O. Box 1678815811, Iran.

2 Department of Mechanical Engineering, Islamic Azad University, North Tehran Branch, Tehran, Iran.

Abstract

In this study, the effect of coating processing time on microstructure of surface and corrosion resistance of coatings resulted by plasma electrolytic oxidation (PEO) was investigated on substrate of TiAl6V4 alloy. The coating processes in hydroxyapatite nano-powder electrolytic were carried out in same conditions of constant voltage of 600V and three different times of 125, 250 and 350 seconds. Studying the microstructure of coatings identified that the coating formed in 125 (s) had more compact and steady structure with fine surface cavities and less porosity. X-ray diffraction pattern of coating demonstrates that this coating is consists of oxide phases of titanium (rutile and anatase) and hydroxyapatite. Also, the study of corrosion resistance of coatings by Potentiodynamic polarization and electrochemical impedance spectroscopy in corrosive solution of chloride sodium 3.5% showed that the coating formed in 125 s has the most noble corrosion resitance potential and the least ICorr and finally the highest resistance to corrosion.

Keywords

Main Subjects


References:

[1] S. K. Yazıcı, F. Muhaffel, M. Baydogan, Effect of incorporating carbon nanotubes into electrolyte on surface morphology of micro arc oxidized Cp-Ti, Applied Surface Science, Vol. 318, 2014, Pp. 10–14.
[2] J.H. Wang, J. Wang, Y. Lu, M.H. Du, and F.Zh. Han, Effects of single pulse energy on the properties of ceramic coating prepared by micro-arc oxidation on Ti alloy, Applied Surface Science, Vol. 324, 2015, Pp. 405–413.
[3] M. Shokouhfar, C. Dehghanian, A. Baradaran, Preparation of ceramic coating on Ti substrate by
Plasma electrolytic oxidation in different electrolytes and evaluation of its corrosion resistance,
Applied Surface Science, Vol. 257, 2011, Pp. 2617–2624.
[4] R.O. Hussein, X. Nie, D.O. Northwood, A spectroscopic and microstructural study of oxide coatings produced on a Ti–6Al–4V alloy by plasma electrolytic oxidation, Materials Chemistry and Physics, Vol. 134, 2012, Pp. 484– 492. 
[5] Zh. Yao, Zh. Jiang, X. Wu, X. Sun, and Zh. Wu, Effects of ceramic coating by micro-plasma oxidation on the corrosion resistance of Ti–6Al–4V alloy, Surface and Coatings Technology, Vol. 200, 2005, Pp. 2445–2450.
[6] M.R. Garsivaz jazi, M.A. Golozar, K. Raeissi, and M. Fazel, Evaluation of corrosion and tribocorrosion of plasma electrolytic oxidation treated Ti–6Al–4V alloy, Surface and Coatings Technology, Vol. 244, 2014, Pp. 29–36.
[7] M. Mu, J. Liang, X. Zhou, Q. Xiao, One-step preparation of TiO2/MoS2 composite coating on Ti6Al4V alloy by plasma electrolytic oxidation and its tribological properties, Surface and Coatings Technology, Vol. 214, 2013, Pp. 124–130.
[8] M. Aliofkhazraei, R. S. Gharabagh, M. Teimouri, M. Ahmadzadeh, Gh. B. Darband, H. Hasannejad, Ceria embedded nanocomposite coating fabricated by plasma electrolytic oxidation on titanium, Journal of Alloys and Compounds, Vol. 685, 2016, Pp. 376–383.
[9] M. Shokouhfar, S.R. Allahkaram, Formation mechanism and surface characterization of ceramic
composite coatings on pure titanium prepared by micro-arc oxidation in electrolytes containing
nanoparticles, Surface and Coatings Technology, Vol. 291, 2016, Pp. 396–405.
[10] Y. Qin, D. Xiong, and J. Li, Tribological properties of laser surface textured and plasma electrolytic oxidation duplex-treated Ti6Al4V alloy deposited with MoS2 film, Surface and Coatings Technology, Vol. 269, 2015, Pp. 266–272.
[11] M. Sabaghi Joni, and A. Fattah-alhosseini, Effect of KOH concentration on the electrochemical
behavior of coatings formed by pulsed DC micro-arc oxidation (MAO) on AZ31B Mg alloy, Journal
of Alloys and Compounds, Vol. 661, 2016, Pp. 237–244.
[12] L.C. Campanelli, L.T. Duarte, P.S.C.P.d. Silva, and C. Bolfarini, Fatigue behavior of modified surface of Ti–6Al–7Nb and CP-Ti by micro-arc oxidation, Materials and Design, Vol. 64, 2014, Pp. 393–399.
[13] S. Stojadinovic, N. Radic, R. Vasilic, M. Petkovic, P. Stefanov, and Lj. Zekovic, B. Grbic, Photocatalytic properties of TiO2/WO3 coatings formed by plasma electrolytic oxidation of titanium in 12-tungstosilicic acid, Applied Catalysis, B: Environmental, Vol. 126, 2012, Pp. 334–341.
[14] S. Aliasghari, A. Němcová, P. Skeldon, and G.E. Thompson, Influence of coating morphology on
adhesive bonding of titanium pre-treated by plasma electrolytic oxidation, Surface and Coatings
Technology, Vol. 289, 2016, Pp. 101–109.
[15] M. Khorasanian , A. Dehghan, M.H. Shariat, M.E. Bahrololoom, S. Javadpour, Microstructure and wear resistance of oxide coatings on Ti–6Al–4V produced by plasma electrolytic oxidation in an
inexpensive electrolyte, Surface and Coatings Technology, Vol. 206, 2011, Pp. 1495–1502.
[16] Y.H. Wang, Zh.G. Liu, J.H. Ouyang, Y.M. Wang, and Y. Zhou, Influence of electrolyte compositions on structure and high temperature oxidation resistance of microarc oxidation coatings formed on Ti2AlNb alloy, Journal of Alloys and Compounds, Vol. 647, 2015, Pp. 431–437.
[17] H. Wang, F. Liu, X. Xiong, Sh. Ke, X. Zeng, and P. Lin, Structure, corrosion resistance and in vitrobioactivity of Ca and P containing TiO2 coating fabricated on NiTi alloy by plasma electrolytic
oxidation, Applied Surface Science, Vol. 356, 2015, Pp. 1234–1243.
[18] T.E. Park, H.Ch. Choe, W.A. Brantley, Bioactivity evaluation of porous TiO2 surface formed on
titanium in mixed electrolyte by spark anodization, Surface and Coatings Technology, Vol. 235, 2013,
Pp. 706–713.
[19] S. Sarbishei, M.A. Faghihi Sani, M. R. Mohammadi, Effects of alumina nanoparticles concentration on microstructure and corrosion behavior of coatings formed on titanium substrate via PEO process, Ceramics International, Vol. 42, 2016, Pp. 8789–8797.
[20] F. Liu, J.L. Xu, D.Z. Yu, F.P. Wang, L.C. Zhao, Effects of cathodic voltages on the structure and
properties of ceramic coatings formed on NiTi alloy by micro-arc oxidation, Materials Chemistry and
Physics, Vol. 121, 2010, Pp. 172–177.
[21] V. Dehnavi, Surface modification of aluminum alloys by plasma electrolytic oxidation, The University of Western Ontario. 2014.
[22] S. Durdu, Ö. F. Deniz, I. Kutbay, M. Usta, Characterization and formation of hydroxyapatite on
Ti6Al4V coated by plasma electrolytic oxidation, Journal of Alloys and Compounds, Vol. 551, 2013,
Pp. 422–429.
 [23] A. Fattah-Alhosseini, M. Vakili-Azghandi, M. K. Keshavarz, Influence of concentrations of KOH and Na2SiO3 electrolytes on the electrochemical Behavior of ceramic coatings on 6061 Al Alloy
processed by plasma electrolytic oxidation, Acta Metallurgica Sinica (English Letters), Vol. 29, No. 3,
2016, Pp. 274–281.
[24] F.Y. Teng, I.Ch. Tai, M.W. Wang, Y.J. Wang, Ch.Ch. Hung, Ch.Ch. Tseng, The structures, electrochemical and cell performance of titania films formed on titanium by micro-arc oxidation, Journal of the Taiwan Institute of Chemical Engineers, Vol. 45, 2014, Pp. 1331–1337.
[25] Zh. Yao, Zh. Jiang, Sh. Xin, X. Sun, X. Wu, Electrochemical impedance spectroscopy of ceramic
coatings on Ti–6Al–4V by micro-plasma oxidation, Electrochimica Acta, Vol. 50, 2005, Pp. 3273–
3279.
[26] M. Babaei, Ch. Dehghanian, M. Vanaki, Effect of additive on electrochemical corrosion properties of plasma electrolytic oxidation coatings formed on CP Ti under different processing frequency, Applied.