Improving the Hot Corrosion Behavior of Plasma-sprayed MCrAlY by RF Sputtering of TiO2 Nano-Coating and Laser Remelting Treatment

Document Type : Original Article

Authors

Department of Production Engineering and Metallurgy, University of Technology, P.O. Box: 10066, Baghdad, Iraq

Abstract

Nanostructured TiO2 coatings were deposited on NiCrAlY coating by RF magnetron sputtering. NiCrAlY coating was deposited by sprayed-plasma method on the Ni-base superalloy substrate. NiCrAlY layer work as the first protection layer while TiO2 nanocoatings as the second protection layer. Laser surface re-melting for coating layers by Nd-YAG laser was done. Hot corrosion test conducted for substrate after coating with both NiCrAlY and TiO2 nanocoating with and without laser surface remelting. Hot corrosion was tested by using a molten salt of Na2SO4–55 %V2O5 at 800 and 900 °C for 60 hours. The weight change measurements were performed to determine the cyclic hot corrosion kinetics of the coatings at a temperature of 800 and 900 °C. The microstructural features, surface topography, and phase composition were characterized by FE-SEM, EDS, AFM, and XRD. The results of FE-SEM indicate that some porosities, cracks, and unmelted powder can be seen on the surface of samples for plasma spraying and RF sputtering of NiCrAlY coatings. After the laser surface remelting of coatings, it can be observed the absence of porosity and crack with enhanced surface properties. The roughness decreases after laser remelting. Hot corrosion tests indicate that the plasma-sprayed NiCrAlY coating can significantly lower the hot corrosion resistance than coating two layers by nanocoating of TiO2 by RF sputtering with laser remelting. The improvement owing to the formation of extensive amounts of the protective oxide of NiO, Al2O3, Cr2O3, Y2O3, and NiCr2O4 spinal generated on the surface. 

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References

  1. Dongsheng W. Effects of laser remelting on microstructural characteristics and hot corrosion behavior of MCrAlY coating prepared by plasma spraying. Mater Sci Forum. 2019; 971: 70-76. https://doi.org/10.4028/www.scientific.net/MSF.971.70.
  2. Rodriguez J, Rico A, Otero E, Rainforth WM. Indentation properties of plasma sprayed Al2O3–13 % TiO2 nanocoatings. Acta Materialia. 2009; 57(11): 3148-3156.https://doi.org/10.1016/j.actamat.2009. 03.020.
  3. Bansal P, Padture NP, Vasiliev A. Improved interAfacial mechanical properties of Al2O3-13wt% TiO2 plasma-sprayed coatings derived from nanocrystalline powders. Acta Materialia. 2003; 51(10): 2959-2970. https://doi.org/10.1016/S1359-6454(03)00109-5.
  4. Ctibor P, Prantnerová M. Plasma spraying and characterization of chromium carbide-nickel chromium coatings. Prog Color Colorants Coat. 2016; 9(4): 281-290. https://doi.org/10.30509/pccc.2016. 75893.
  5. Abbas RA, Ajeel SA, Ali Bash MA, Kadhim MJ. Laser innovation of YSZ electrophoretic deposition overlay on plasma sprayed thermal barrier coating system, The research on Aspects of Materials Science and Engineering, In Proceedings of Third International Conference, Mater Today, India, 2022; 57:577-585.
  6. Hashemi S, Parvin N, Valefi Z, Parvizi S. Experimental investigation and parameter optimization of Cr2O3 atmospheric plasma spray nanocoatings. Synth Sint. 2021, 12(3): 143-150. https://doi.org/10.53063/synsint.2021.1339.
  7. Palani V, Kumar A, Vijaya Kumar KR, Kumaran P. Investigations on the performance characteristics of carbon nano-tubes, alumina and titanium dioxide based plasma sprayed coatings on AISI 1020 steel. Inter J Prec Eng Manuf. 2021; 22: 365-372. https://doi.org/10.1007/s12541-020-00458-x.
  8. Szczepankowski A, Przysowa R, Anski JP, Kułaszka A. Health and durability of protective and thermal barrier coatings monitored in service by visual inspection. Coatings. 2022; 12(5): 624. https://doi.org/10.3390/coatings12050624.
  9. Abbas RA, Ajeel SA, Ali Bash MA, Kadhim MJ. Effect of plasma spray distance on the features and hardness reliability of YSZ thermal barrier coating, The research on Materials Engineering & Science. In Proceedings of 3rd International Conference. Mater Today, India, 2021; 42: 2553-2560.
  10. Meng G, Liu H, Liu M, Xu T, Yang G, Li CX, Li CJ. Highly oxidation resistant MCrAlY bond coats prepared by heat treatment under low oxygen content. Surf Coat Technol. 2019; 368(25): 192-201. https://doi.org/10.1016/j.surfcoat.2019.04.046.
  11. Gurrappa I, Malakondaiah G. Effect of environment on corrosion characteristics of newly developed DMR-1700 structural steel. Sci Technol Adv Mater. 2008; 9(2): 025005. https://doi.org/10.1088/1468-6996/9/2/025005.
  12. Kuznetsov YI, Redkina GV. Thin protective coatings on metals formed by organic corrosion inhibitors in neutral media. Coatings. 2022; 12(2): 149-158. https://doi.org/10.3390/coatings12020149.
  13. Nakata K, Fujishima A. TiO2 photocatalysis: Design and applications. J photochem Photobiol C: Photochem Rev. 2012; 13(3): 169-189. https://doi.org/10.1016/j.jphotochemrev.2012.06.001.
  14. Goto T. A new thick film coating technology-laser chemical vapor deposition, Handbook of Advanced Ceramics (Second Edition), Materials, Applications, Processing, and Properties; 2013; 837-846.
  15. Robert D. Photosensitization of TiO2 by MxOy and MxSy nanoparticles for heterogeneous photocatalysis applications. Catalysis Today. 2007; 122(1-2): 20-26. https://doi.org/10.1016/j.cattod.2007.01.060.
  16. Simionescu O, Romanit C, Tutunaru O, Ion V, Buiu O, Avram A. RF magnetron sputtering deposition of TiO2 thin films in a small continuous oxygen flow rate. Coatings. 2019; 9(7): 442. https://doi.org/10.3390/coatings9070442.
  17. Haghjoo R, Sadrnezhaad SK, Nemati NH. Thin TiO2 nanocoating of porous titanium through radio frequency magnetron sputtering to improve the biological response of orthopedic implants. J Clinical Res Paramed Sci. 2021; 10(2): e119150. https://doi.org/10.5812/jcrps.119150.
  18. Molavi E, Shanaghi A, Chu PK. Investigation of corrosion behavior of Ti/TiN multilayers on Al7075 deposited by high-vacuum magnetron sputtering in 3.5 % NaCl Solution. J Mater Eng Perform. 2018; 27: 2216-2225. https://doi.org/10.1007/s11665-018-3306-x.
  19. Curkovi´c L, Curkovi´c HO, Žmak I, Mustafa MK, Gabelica I. Corrosion behavior of amorphous Sol–Gel TiO2–ZrO2 nano thickness film on stainless steel. Coatings. 2021; 11(8): 988. https://doi.org/10.3390/ coatings11080988.
  20. Li Z, Li Z, Zuo C, Fang X. Application of nanostructured TiO2 in UV photodetectors: A review. Adv Mater. 2022; 34(28): 2109083. https://doi.org/10.1002/adma.202109083
  21. Qiu J, Zhang S, Zhao H. Recent applications of TiO2 nanomaterials in chemical sensing in aqueous media. Sensor Actuators B: Chem. 2011; 160(1): 875-890. https://doi.org/10.1016/j.snb.2011.08.077.
  22. Shah P, Agrawal N, Reddy Ravuru N, Patel S. Ultrafine titanium-dioxide (rutile) based nano-crystalline dispersions as a pigment for waterborne coatings. Prog Color Colorant Coat. 2022; 15(4): 305-318. https://doi.org/10.30509/pccc.2022.166922.1142.
  23. Esparza-Contro C, Berthomé G, Renou G, Robaut F, Coindeau S, Vachey C, Cambin J, Mantel M, Latu Romain L. Microstructures of titanium oxide thin films grown continuously on stainless steel wires by PVD in an inverted cylindrical magnetron: towards an industrial process. Surf Coat Technol. 2020; 389(15): 125643. https://doi.org/10.1016/j.surfcoat.2020.125643
  24. Antou G, Montavon G, Hlawka F, Cornet A, Coddet C, Machi F. Modification of thermal barrier coating architecture by in situ laser remelting. J European Ceram Soc. 2006; 26(16): 3583-3597. https://doi.org/10.1016/j.jeurceramsoc.2006.01.003.
  25. Rahman A, Chawla V, Jayaganthan R, Chandra R, Ambardar R. Study of cyclic hot corrosion of nanostructured Cr/Co–Al coatings on superalloy. Mater Chem Phy. 2011; 126(1-2): 253-261. https://doi.org/10.1016/j.matchemphys.2010.11.030.
  26. Baseri NA, Mohammadi M, Ghatee M, Abassi-Firouzjah M, Elmkhah H. The effect of duty cycle on the mechanical and electrochemical corrosion properties of multilayer CrN/CrAlN coatings produced by cathodic arc evaporation, Surf Eng. 2020; 37(2): 1-10. https://doi.org/10.1080/02670844.2020.1775331.
  27. Figueiredo V, Elangovan E, Goncalves G, Barquinha P, Pereira L, Franco N, Alves E, Martins R, Fortunato E. Effect of post-annealing on the properties of copper oxide thin films obtained from the oxidation of evaporated metallic copper, Appl Surf Sci. 2008; 254(13): 3949-3954. https://doi.org/10.1016/j.apsusc. 2007.12.019

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