Hot Corrosion and oxidation Investigation of the sermaLoy j coating on the Rene 41 Nickel based superalloy

Slurry coating has spawned a considerably interest in gas turbine coating industry regarding their low cost and straightforward process. Among conventional standard methods, SermaLoy J slurryis widely used in gas turbine engine to protect Vanes and blades from hot corrosion and oxidation[1, 2]. In this work, SermaLoy J was deposited on the Rene 41 Nickel based superalloy with different thickness and process. Also, heat treatment operation was done to diffuse Al, Si,and Cr in lattice. Then, Microstructure and chemical composition of the coated specimens were analyzed using Scanning Electron Microscopy (SEM), Energy Dispersive X-ray spectroscopy (EDX), Metallography, and Quantometery. Physical characterization done by SEM and EDXshowed a homogeneous coating including Si, Al, and Cr elements. Finally, the hot oxidation and corrosion resistance of them is analyzed on the 1100 °C. As shown on the result, Coating in which has 40-50 micro meter coating has best quality to hot corrosion and oxidation.

Keywords:

SermaLoy J , Coating , Hot corrosion , and Oxidation