Oxidation resistance by HVOF coating of MDN-121 on turbine material
Authors
-
,IN
Prabhakaran D -
,INJegadeeswaran N
DOI:
https://doi.org/10.18311/jmmf/2021/30114Keywords:
Fracture toughness, stellite-6, Ti-31, high velocity oxyfud (HVOF), characterization etc.Abstract
Surface corrosion, such as oxidation, occurs in gas turbines at high-temperature locations such as turbine edges. Because of the absconds, the turbines became less compelling and loud. The focus of the exhibit is on a high speed oxy-fuel coating of MDN-121 unusual steel using a blended mix of cermets powder consisting of 25% Cr3C3NiCr+75% NiCrAlY. In a hot environment at 750oC, oxidation tests were performed on coated and uncoated MDN-121. Cycles of 1 hour warming and 20 minutes cooling were used in thermogravimetric testing. Weight estimation was done after each cycle. The tests were characterized using XRD and SEM/EDS after 50 cycles were completed. It was observed that the coated test is more oxidation safer than the uncoated test. Surface morphology from SEM/EDS shows that the surface is wealthy in oxides. Gravimetric examination demonstrated that the weight picks up of the test takes after a illustrative relationship with time. The rate steady for the coated test was much for the coated sample was much lesser compared to the uncoated sample.
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Accepted 2022-04-28
Published 2022-04-28
References
Ivan Anzel, (2005): “High Temperature Oxidation of Metals and Alloys”, Metalurgija–journal of Metallurgy, p.p 326-336
Sidhu, B.S., Puri, D. and Prakash, S. (2005): “Mechanical and metallurgical properties of plasma sprayed and laser remelted Ni-20Cr and satellite-6 coatings.” Journal of Materials Processing Technology, 159 (3), 347-355.
Sidhu, T.S., Malik, A., Prakash, S. and Agarwal, R.D. (2007): “Oxidation and hot corrosion resistance of HVOF WC-NiCrFeSiB coating on Ni- and Fe- based superalloys at 800 ºC.” J. Thermal Spray Technol., 16(5-6), 844-849.
Mevrel, R. (1989): State of the art on high-temperature corrosion-resistant coatings. Materials Science and Engineering.
Oskarsson, H. (2007): “Material challenges in industrial gas turbines.” Proc., of Sino-Swedish Structural Materials Symposium, C
Wright, I.G. and Gibbons, T.B. (2007): “Recent developments in gas turbine materials and technology and their implications for syngas firing.” Int. Journal of Hydrogen Energy, 32, 3610-3621.
Heath, G.R., Heimgartner, P., Irons, G. and Miller. (1997): “An assessment of thermal spray coating technologies for high temperature corrosion protection.” Material Science Forum, 251-54, 809-816.
Sidhu, T. S., Prakash. and Agrawal. (2006): “Hot corrosion resistance of high velocity Oxy-fuel sprayed coatings on a nickel-based superalloy in molten salt environment.” J. Thermal Spray Technol., 15 (3), 387-399.
