Evaluation of tribological behavior of PEO composite coating containing SiO2 particles on 7075 aluminum alloy

Subject Areas : journal of New Materials

Mohammad Razazi Boroujeni ¹ (Assistant prof. of Materials Engineering, Department of Materials Engineering, Lenjan Branch, Islamic Azad University, Isfahan, Iran.)
Zahraa Salah Hadi Aljassar ² (MSc student of Materials Engineering, Department of Materials Engineering and Metallurgy, South Tehran Branch, Islamic Azad University, Tehran, Iran.)
Farhad Azimifar ³ (Assistant prof., Department of Biomedical Engineering, Islamic Azad University, Isfahan branch, Isfahan, Iran.)

Received: 2023-05-04 Accepted : 2023-08-20 Published : 2022-10-23

Keywords: Coating, composite, Wear, plasma electrolyte oxidation, friction,

Abstract :

Abstract
Introduction: Electrolytic plasma oxidation coatings are one of the most important materials used to deal with the wear of aluminum parts due to their compact, sticky and hard nature. In recent years, improving the surface properties of these coatings with the help of adding reinforcement particles has attracted the attention of researchers
Methods In this study, plasma electrolytic oxidation (PEO) process was applied in two modes, normal and composite, to coat aluminum 7075. To produce the composite coating, the same electrolyte as the normal mode was used with the addition of 12 grams per liter of silicon oxide particles. Characterization of coatings was done with the help of SEM, X-ray diffraction analysis, energy dispersive spectrometer (EDS) analysis, roughness measurement and hardness measurement. The tribological behavior of coatings was investigated with the help of pin-on-disk test and the analysis of the wear mechanism of the samples was done with the help of SEM images and EDS analysis of wear surfaces.
Findings: Both coatings had a pancake structure with craters. Also, the drainage channels that lead to the porosity of the coatings were less created on the surface of the composite coating. The normal coating was an oxide coating with an amorphous/crystalline nature, but the composite coating had silicon oxide and mullite crystalline phases in addition to these two phases. The lowest weight loss (highest wear resistance) and friction coefficient were obtained for the composite coating. wear mechanism was also observed delamination wear and oxidation wear for substrate, abrasion, adhesive and oxidation  wear for PEO coating, and fine scratch mechanisms and adhesive mechanism with very little effect for composite coating.

References:

1. sikdar s., menezes p. v., maccione r., jacob t., menezes p. l., “plasma electrolytic oxidation (peo) process,processing, properties, and applications” nanomaterials, 11(6), 1375,


2. necula b. s., apachitei i., tichelaar f. d., fratila-apachitei l. e., and duszczyk j., “an electron microscopical study on the growth of tio2–ag antibacterial coatings on ti6al7nb biomedical alloy.” acta biomaterialia, 7(6), pp. 2751-2757, 2011.


3. yu z., du a., wang c., ma r., fan y., zhao x., and cao x., “incorporation mechanism of zno nanoparticles in peo coating on 1060 al alloy.” surface and coatings technology, 412, 127068, 2021.‏


4. yin y. j., li s. h., shen d. w., zu y. y., and qu c. z., “effects of al2o3 nanoparticles on microstructure and performance of ceramic coatings by micro-arc oxidation in key engineering materials” trans. Tech. publications ltd.‏, vol. 537, pp. 92-96, 2013.‏


5. sarbishei s., sani m. a. f., and mohammadi m. r., “study plasma electrolytic oxidation process and characterization of coatings formed in an alumina nanoparticle suspension.” vacuum, 108, pp. 12-19, 2014.‏


6. arrabal r., matykina e., viejo f., skeldon p., thompson g. e. and merino m. c., “ac plasma electrolytic oxidation of magnesium with zirconia nanoparticles.” applied surface science, 254(21), pp. 6937-6942, 2008.‏


7. matykina e., arrabal r., skeldon p., and thompson g. e., “investigation of the growth processes of coatings formed by ac plasma electrolytic oxidation of aluminium.” electrochimica acta, 54(27), pp. 6767-6778, 2009.‏


8. zhang r., zhao j., and liang j., “a novel multifunctional ptfe/peo composite coating prepared by one-step method.” surface and coatings technology, 299, pp. 90-95, 2016.‏


9. momeni f. and mousavi khoee m., “investigation of zinc metallic coating properties formed on low carbon steel in alkaline and sulfate electrolytes by plasma electrolytic saturation.” journal of new materials, 6(23), pp. 1-18, 2016.‏


10. rapheal g., kumar s., blawert c., and dahotre n. b., “wear behavior of plasma electrolytic oxidation (peo) and hybrid coatings of peo and laser on mri 230d magnesium alloy.” wear, 271(9-10), pp. 1987-1997, 2011.‏


11. van truong p., van bo n., van minh n., anh n. v., kumar g. s. and shkir m., “investigation of corrosion and wear resistance of peo coated d16t aluminium alloys in the marine tropical climate conditions.” materials chemistry and physics, 290, p. 126587, 2022.‏


12. larsson a., halvarsson m. and ruppi s., “microstructural changes in cvd κ-al2o3 coated cutting tools during turning operations.” surface and coatings technology, 111(2-3), pp. 191-198, 1999.‏


13. fernández-lópez p., alves s. a., azpitarte i., san-josé j. t. and bayón r., “corrosion and tribocorrosion protection of novel peo coatings on a secondary cast al-si alloy: influence of polishing and sol-gel sealing.” corrosion science, 207, p. 110548, 2022.‏


14. zhai w., bai l., zhou r., fan x., kang g., liu y. and zhou k., “recent progress on wear‐resistant materials: designs, properties, and applications.” advanced science, 8(11), p. 2003739, 2021.‏


15. lin m., nemcova a., voevodin a. a., korenyi-both a., liskiewicz t. w., laugel n., and yerokhin a., “surface characteristics underpinning fretting wear performance of heavily loaded duplex chameleon/peo coatings on al.” tribology international, 154, 106723, 2021.‏


16. liu y. f., liskiewicz t., yerokhin a., korenyi-both a., zabinski j., lin m., and voevodin a. a., “fretting wear behavior of duplex peo/chameleon coating on al alloy.” surface and coatings technology, 352, pp. 238-246, 2018.‏

mohedano m., lopez e., mingo b., moon s., matykina e. and arrabal r., “energy consumption, wear and corrosion of peo coatings on preanodized al alloy: the influence of current and frequency.” journal of materials research and technology, 21, pp. 2061-2075, 2022.‏