Abstract:
In this study, kinetic examinations of boronized 34CrAlNi7 Nitriding Steel samples were described. Samples were
boronized in indirect heated fluidized bed furnace consists of Ekabor 1™ boronizing agent at 1123, 1223 and 1323 K for 1, 2 and
4 hours. Morphologically and kinetic examinations of borides formed on the surface of steel samples were studied by optical
microscope, scanning electron microscope (SEM) and X-Ray diffraction (XRD). Boride layer thicknesses formed on the steel
34CrAlNi7 ranges from 46,6 ± 3,8 to 351,8 ± 15,2 µm. The hardness of the boride layer formed on the steel 34CrAlNi7 varied
between 1001 and 2896 kg/mm2
. Layer growth kinetics were analyzed by measuring the extent of penetration of FeB and Fe2B
sublayers as a function of boronizing time and temperature. The kinetics of the reaction has been determined with K=Ko exp (-
Q/RT) equation. Activation energy (Q) of boronized steel 34CrAlNi7 was determined as 169 kj/mol.
