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A D V A N C E D M A T E R I A L S & P R O C E S S E S | N O V E M B E R / D E C E M B E R 2 0 1 9 4 6 iTSSe TSS iTSSe TSS JTST HIGHLIGHTS INFLUENCE OF HEAT TREATMENT AND SEALING ON HOT CORROSION BEHAVIOR OF 80Ni-20Cr COATINGS Harkulvinder Singh, Sukhpal Singh Chatha, and Hazoor Singh Sidhu The present work aims to examine the influence of heat treatment and sealing on high-temperature hot corrosion performance of HVOF-deposited 80Ni-20Cr coating on T347H austenite steel. The high-temperature corrosion performance of T347H, 80Ni-20Cr, 80Ni-20Cr heat-treated and 80Ni-20Cr sealed coatings has been investigated in Na 2 SO 4 -60V 2 O 5 at- mosphere at 750°C for 50 cycles. Corrosion kinetics were measured by weight change calculations after each cycle. Bare T347H steel experienced severe spallation of the oxide scale indicating weak resistance toward high-temperature hot corrosion. 80Ni-20Cr coatings have given a significant protec- tion to austenite steel due to the development of oxides and spinels of Ni and Cr. Further, the post-treatment by way of heat treatment and sealing improved the corrosion resistance of 12 SHARE ARTICLE FEATURE FROM JTST The Journal of Thermal Spray Technology (JTST) is pleased to bring your at- tention to SharedIt, a content sharing initiative from Springer Nature that allows authors and subscribers to easily and legally share links to free-to-read versions of research articles anywhere, including social media platforms, repositories, and personal websites. Authors and subscribers who wish to share JTST research with colleagues and friends are invited to use the “Share Article” tab to the right of any article on the JTST site on SpringerLink (springer.com/journal/11666) . Anyone who receives the link will be able to connect to a view-only version of the article for free. The editorial board hopes you find this tool helpful to learn and share the most recent advances in thermal spray research and technology development. Fig. 5 — Weight gain/area vs. number of cycles plots for the bare T347H , as deposited, heat-treated and sealed coating on T347H steel subjected to cyclic corrosion for 50 cycles in molten (Na 2 So 4 -60%V 2 O 5 ) salt environment at 750°C. 80Ni-20Cr coating. Both the post-treatments lead to choking the interconnected porosity of the 80Ni-20Cr coating, which resulted in better performance of post-treated coatings (Fig. 5).