Effect of Shot Blasting on the Boriding Kinetics of AISI 316L Stainless Steel
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In this study, the effect of shot blasting on boriding kinetics of AISI 316L stainless steel alloy was investigated. For this purpose, AISI 316L samples were shot blasted at 6 bar pressure using 300-500 mu m glass beads. Shot blasted samples were borided with powder pack boriding technique, using Ekabor 2 boriding powder, with 2, 4 and 6 boriding times at 850, 900 and 950 degrees C boriding temperatures. As a result of boriding, boride layers consisting of FeB and Fe2B phases with a microhardness of similar to 1497-2135 HV0.1 and an average thickness of similar to 9.6-49.27 mu m were obtained on the surface of AISI 316L stainless steel alloy samples. These boride layers on the AISI 316L stainless steel alloy surface were formed in flat morphology due to the high amount of alloying elements. In the kinetic studies, the activation energy of boron diffusion in AISI 316L stainless steel alloy was calculated as 204.68 kJ mol(-1). The obtained results showed that shot blasting decreased the boron diffusion kinetics compared to the results in the literature.