1. Kinetic Investigation and Wear Properties of Fe2B Layers on AISI 12L14 Steel.
- Author
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Keddam, M., Ortiz-Dominguez, M., Elias-Espinosa, M., Arenas-Flores, A., Zuno-Silva, J., Zamarripa-Zepeda, D., and Gomez-Vargas, O. A.
- Subjects
DYNAMICS ,TEMPERATURE ,BORIDES ,COEFFICIENTS (Statistics) ,SAWTOOTH oscillations - Abstract
In the current study, the powder-pack boriding was applied to the AISI 12L14 steel in the temperature range 1123 K to 1273 K for an exposure time between 2 and 8 hours. The produced boride layer was composed of Fe
2 B with a sawtooth morphology. A diffusion model based on the integral method was applied to investigate the growth kinetics of Fe2 B layers. As a main result, the boron diffusion coefficients in Fe2 B were estimated by considering the principle of mass balance at the (Fe2 B/substrate) interface with an inclusion of boride incubation times. The value of activation energy for boron diffusion in AISI 12L14 steel was estimated as 165 kJ mol−1 and compared with other values of activation energy found in the literature. An experimental validation of the present model was made by using four different boriding conditions. Furthermore, the Rockwell-C adhesion test was employed to assess the cohesion of boride layers to the base metal. The scratch and pin-on-disc tests were also carried out to analyze the effect of boriding on wear behavior of AISI 12L14 steel. [ABSTRACT FROM AUTHOR]- Published
- 2018
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