TY - THES A1 - Farhadi, Farzaneh A2 - Mishra, Brajendra A2 - Liang, Jianyu A2 - Camesano, Terri Anne A2 - Sisson, Richard D. A2 - Cote, Danielle AB - Nickel-Aluminide intermetallic alloys have drawn attention because of their interesting properties. They have long been used as coating materials for industrial and structural applications, where their functions have been to increase the lifetime of parts at high-temperature applications by enhancing not only mechanical properties such as high temperature tensile and compressive yield strength, high-temperature wear resistance, and fatigue resistance, but also by enhancing oxidation, and carburization resistance of parts at high temperature. Nickel aluminide coatings have been used extensively in gas turbines, turbocharger components, valves, and piston head of internal combustion engines, jet engines, furnaces and furnace assembly, and forging dies. The present research focuses on developing novel methods to deposit nickel-aluminide intermetallic coatings on RA330 stainless steel. The basic aim has been to study the formation of different Ni-Al intermetallic coatings via several methods. These methods were identified to provide processes to coat complex geometries and develop the nickel aluminides. The thickness of the diffusion layers and intermetallics were controlled by post-diffusion treatment. All the coatings were characterized for their phase fractions, morphology, composition, microstructure, and adhesion to the substrate using XRD, SEM, EDS, EBSD, and optical microscopy and all methods were proven to be successful to develop one or more Ni3Al and NiAl phases. DA - 2021/09/06 DB - Digital WPI DP - Worcester Polytechnic Institute ID - etd-31606 L1 - https://digital.wpi.edu/show/2227ms86t L3 - https://digital.wpi.edu/show/hh63sz93b LK - https://digital.wpi.edu/ PB - Worcester Polytechnic Institute PY - 2021 T1 - New Methods to Deposit Nickel-Aluminide Alloys as High Temperature Protective Coatings on Stainless Steels UR - https://digital.wpi.edu/show/gt54kr17v ER -