Abstract
In the present work, two grades of martensitic stainless steels (MSS) samples were boronized at 950 and 1000 °C for 6 h and then tempered at 600 °C for 2 h. These samples were subjected to a 36 h slurry erosion test, and their worn surfaces were characterized using optical profiling, SEM and XRD. Boronized samples exhibit significant enhancement in erosion resistance. SEM micrographs reveal minimal cracks and indentations while XRD shows presence of iron borides on eroded surface. Results suggest that boronizing temperature significantly enhances slurry erosion resistance of MSS used in hydro turbines, making them more efficient and sustainable.
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