Simulation model of monolayer growth kinetics of Fe<sub>2</sub>B phase

Mebarek, Bendaoud; Madouri, Djamel; Zanoun, A.; Belaïdi, A.

doi:10.1051/mattech/2015058

Cited by 7 publications

(5 citation statements)

References 11 publications

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“…Activation energy results of some boriding studies made by different boriding methods were given in Table 4. Activation energies for the formation and growth of boride layers are consistent with the literature as can be seen from Table 5 [30,31,[36][37][38][39][40][41][42][43][44][45].…”

Section: Temperature (°C)supporting

confidence: 85%

A Kinetic Study of Thermochemically Borided Aisi 316l Stainless Steel

Başman

Arikan²,

Arisoy

et al. 2023

Journal of Scientific Reports-A

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Biomaterials are used in different parts of human body as replacement implants in medical applications. An implant material should have high biocompatibility, corrosion and wear resistance, and suitable mechanical properties in terms of safety and long-service period. There are only a few biocompatible implant materials: AISI316L stainless steel is one of the materials used in this type of applications. They have relatively poor wear resistance. Boriding being a thermochemical diffusion treatment is one of the processes to improve their wear resistance. Borides are formed by introducing boron atoms by diffusion onto a substrate surface and they are non-oxide ceramics and could be very brittle. The growth kinetics of boride layer is analyzed by measuring depth of layers as a function of boriding time within a temperature range. In this study, the effects of Ekabor-2 bath on formation mechanism and properties of boride layer in thermochemical diffusion boriding of AISI316L stainless steel were investigated. Different temperatures and durations were applied in boriding operations and hardness, optical microscopy, XRD, EPMA and SEM studies were performed to detect the properties of boride layers. It was found that thickness of boride layer increased with increasing temperature and time; the basic phase in the boride layer formed was Fe2B and FeB phase also formed. It was also found that surface hardness values of borided materials increased depending on temperature and time of boriding process; surface hardness values of borided materials are approximately 10 times higher than surface hardness values of non-borided AISI316L stainless steel and formation activation energy of boride layer is 149.3 kjmol-1.

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Section: Temperature (°C)supporting

confidence: 85%

A Kinetic Study of Thermochemically Borided Aisi 316l Stainless Steel

Başman

Arikan²,

Arisoy

et al. 2023

Journal of Scientific Reports-A

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“…Single-phase or two-phase boride layers can be produced with this technique [6].The thermochemical method of boriding hardening can be applied to many ferrous, non-ferrous and cermet materials [1,2]. The process involves the diffusion of boron atoms into the base metal lattice by forming a hard interstitial boron compound on the surface [7].…”

Section: Introductionmentioning

confidence: 99%

Dybkov model for the estimation of boron diffusion in the FeB/Fe2B bilayer on AISI 316 steel

Hadjadj,

Mebarek,

El Guerri

et al. 2024

Zas Mat

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The aim of this work is to apply three models to simulate the boron diffusion in AISI 316 steel, with an approach based on classical mass balance equations, the Dybkov model and the integral method. From the numerical solutions of both models, the predicted values of thickness have been compared to the experimental results. In addition, in order to improve the predictability of the two models, it is necessary to find precise measurements on the diffusion of boron in each phase. The comparison of experimental and theoretical results allows us to confirm the validity of both models. After validation, the root mean square error and the diffusion coefficient were calculated to achieve good performance and better accuracy. The comparison of the results from the two simulation models with confronted with the experimental data to verify the validity of this theoretical study. Finally, the comparison of the derived results gave the values of the root mean square error equal to 1.6μm for Fe2B and 0.75μm for FeB.

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“…The boronizing is a thermochemical treatment widely used in the industry [1][2][3]. By this process, a boronized layer on the metal surface was obtained which is characterized by a good resistance to abrasive and adhesive wear [4]. The boronizing treatment is based on the diffusion of boron atom in the iron matrix (Fe) with the possibility of chemical reactions required to form the borided layer [5].…”

Section: Introductionmentioning

confidence: 99%

Simulation of the incubation time for the formation of (FeB/Fe₂B) bilayer on pure iron

Mebarek

Кеддам

Kulka

2021

Koroze a Ochrana Materialu

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In this work, a mathematical model was used in order to study the growth kinetics of (Fe2B/FeB) bilayer during bori-ding process basing on the second Fick’s law and mass balance equation. The run of the numerical simulation allowed calculating the incubation time (τ) of each boronized layer (Fe2B or FeB), and estimating the effect of this parameter on the growth of the boronized layer. The boride incubation time for forming the FeB or Fe2B layer on the pure iron substrate was incorporated into the present mathematical model. To simulate the value of the growth rate constant and the incubation time for the bilayer configuration, the experimental data available in the literature concerning the boronizing of pure iron were considered. Based on the experimental and simulation results, it was shown that the incubation time decreases with increasing temperature in the FeB and Fe2B phases. It was concluded from this study that the thickness of each boride layer depended on its growth rate constant and on another parameter kτ which was the rate constant of incubation time.The obtained results confirmed the validity of the present mathematical model and gave a good estimate of the incubation time during the formation of each boride layer as well as formulated the variation of this parameter with a mathematical equation. Furthermore, the comparison of experimental data with the simulated results of boronized layer thickness allowed to validate the present model.

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Simulation model of monolayer growth kinetics of Fe₂B phase

Cited by 7 publications

References 11 publications

A Kinetic Study of Thermochemically Borided Aisi 316l Stainless Steel

A Kinetic Study of Thermochemically Borided Aisi 316l Stainless Steel

Dybkov model for the estimation of boron diffusion in the FeB/Fe2B bilayer on AISI 316 steel

Simulation of the incubation time for the formation of (FeB/Fe₂B) bilayer on pure iron

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Simulation model of monolayer growth kinetics of Fe2B phase

Cited by 7 publications

References 11 publications

A Kinetic Study of Thermochemically Borided Aisi 316l Stainless Steel

A Kinetic Study of Thermochemically Borided Aisi 316l Stainless Steel

Dybkov model for the estimation of boron diffusion in the FeB/Fe2B bilayer on AISI 316 steel

Simulation of the incubation time for the formation of (FeB/Fe2B) bilayer on pure iron

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Simulation model of monolayer growth kinetics of Fe₂B phase

Simulation of the incubation time for the formation of (FeB/Fe₂B) bilayer on pure iron