Abstract
Hot corrosion is the foremost problem in the thermal, gas power plants working in the high-temperature aggressive atmospheres. In the current study, the hot corrosion characteristics of AISI 904 L and Inconel 625 bimetallic joints were investigated. These dissimilar joints were produced by gas tungsten arc welding using pulsed current method (PCGTAW) employing enriched Ni-Cr-Mo fillers (ERNiCrMo-4 and ERNiCrCoMo-1). The performances of these coupons have been ascertained by exposing in the cyclic air oxidation and K2SO4 + 60% NaCl eutectic mixture of molten salt for 50 cycles at 700 °C. Thermogravimetric plots were established to find the corrosion kinetics. The scales of the oxide layer were characterized by XRD and SEM/EDS methods. The study assimilated that all the coupons exhibited better corrosion resistance when exposed in the air oxidation compared to the molten salt environment. Spallation and blistering were experienced at the ERNiCrCoMo-1 weldment and it was found to be more susceptible to degradation.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
