Open AccessBoriding kinetics of Fe2B layers formed on AISI 1045 steel
Author(s) -
Jorge Zuno-Silva,
Mariana Domı́nguez,
М. Кеддам,
M. Elías-Espinosa,
O. Damián-Mejía,
Edgar Cardoso-Legorreta,
M.A. Abreu-Quijano
Publication year - 2014
Publication title -
journal of mining and metallurgy. section b, metallurgy/journal of mining and metallurgy. section b, metallurgy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.42
H-Index - 20
eISSN - 2217-7175
pISSN - 1450-5339
DOI - 10.2298/jmmb140323019z
Subject(s) - boriding , boride , materials science , diffusion , boron , activation energy , kinetics , substrate (aquarium) , optical microscope , work (physics) , diffraction , atmospheric temperature range , metallurgy , analytical chemistry (journal) , composite material , thermodynamics , scanning electron microscope , chemistry , optics , physics , oceanography , organic chemistry , chromatography , quantum mechanics , geology
In the present work, a diffusion model was suggested to study the growth kinetics of Fe2B layers grown on the AISI 1045 steel by the pack-boriding treatment. The generated boride layers were analyzed by optical microscopy and X-ray diffraction analysis. The applied diffusion model is based on the principle of mass conservation at the (Fe2B/ substrate) interface. It was used to estimate the boron diffusion coefficients of Fe2B in the temperature range of 1123-1273 K. A validation of the model was also made by comparing the experimental Fe2B layer thickness obtained at 1253 K for 5 h of treatment with the predicted value. Basing on our experimental results, the boron activation energy was estimated as 180 kJ mol-1 for the AISI 1045 steel