Martin Ortiz-Domínguez
, Mourad Keddam
J. Min. Metall. Sect. B-Metall., 62 (2) (2026) 131-147. DOI:10.2298/JMMB260218010O
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Available online 02 jun 2026
(Received 18 February 2026; Accepted 29 May 2026)
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This work investigates the application of the pack-boriding process to a low-alloy steel of type ASTM A29 within the temperature range 1123-1273 K. Microscopic observations revealed the formation of a single Fe2B layer at all processing temperatures, with a less pronounced saw-tooth interfacial morphology. The tribological behaviour of the boride layers was studied using pin-on-disc tests, and their nanomechanical properties, such as elastic modulus and nanohardness, were evaluated by nanoindentation tests. Furthermore, the Taylor expansion (TE) model was implemented to assess boron diffusion coefficients in Fe2B, from which the activation energy was determined. The empirical verification of this approach was performed using four additional boriding conditions.
Keywords: Boriding, kinetics; Tribology; Nanomechanical properties; Taylor expansion model; Activation energy
Correspondence Address:
Martin Ortiz-Domínguez,
Autonomous University of Hidalgo State, Escuela Superior de Ciudad Sahagún-Mechanical Engineering, Hidalgo, Mexico;
email: martin_ortiz@uaeh.edu.mx
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