S. Kaushal, S. Kumari, D. Mudgal, D. Gupta, Hitesh Vasudev
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EXPERIMENTAL STUDIES ON THE SURFACE CHARACTERISTICS OF BIMETALLIC JOINTS INTERFACE FABRICATED THROUGH MICROWAVE IRRADIATION
Surface characteristics of dissimilar metal joints interface play a crucial role on its functional performance. In this study, the microstructural, metallurgical and corrosion behavior of the microwave processed and TIG welded bimetallic joints interface surfaces were investigated. Metallurgical and mechanical properties of the joints interface surfaces were studied using SEM/EDS, XRD and microhardness techniques. The hot corrosion behavior study of both joints was carried out at elevated temperature in actual environment of biomass fuel-fired boiler as well as in simulated boiler environment. The after-corrosion behavior of both joints was analyzed using SEM and XRD methods. TIG-welded samples exhibited more loss in weight during both actual and simulated corrosion environments. The depletion of chromium from substrates in the actual corrosion environment proved that chromium is involved in controlling corrosion rates by forming the protective oxides during corrosion cycles.
期刊介绍:
This international journal is devoted to the elucidation of properties and processes that occur at the boundaries of materials. The scope of the journal covers a broad range of topics in experimental and theoretical studies of surfaces and interfaces. Both the physical and chemical properties are covered. The journal also places emphasis on emerging areas of cross-disciplinary research where new phenomena occur due to the presence of a surface or an interface. Representative areas include surface and interface structures; their electronic, magnetic and optical properties; dynamics and energetics; chemical reactions at surfaces; phase transitions, reconstruction, roughening and melting; defects, nucleation and growth; and new surface and interface characterization techniques.