{"title":"Kinetic Modeling of Ultrafast Boriding of AISI 1045 Steel and Phase Homogenization","authors":"Brahim Boumaali, Mourad Keddam","doi":"10.1134/S2070205124701624","DOIUrl":null,"url":null,"abstract":"<p>In this work, the Dybkov model was applied to simulate the boronizing kinetics of AISI 1045 steel and the subsequent phase homogenization (PH) by considering two fitting parameters and boride incubation times to reproduce the experimental thicknesses of FeB and (FeB + Fe<sub>2</sub>B) layers. The bilayer (FeB/Fe<sub>2</sub>B) was generated on AISI 1045 steel using the ultra fast boriding (UFB) process in the range of 1123 to 1223 K for 0.25–0.75 h. New expressions of analytical solutions of Dybkov model were then developed. As a main result, the boron activation energies in FeB and Fe<sub>2</sub>B were determined as 145.27 and 133.13 kJ mol<sup>–1</sup> for FeB and Fe<sub>2</sub>B layers, respectively. The relations describing the evolution of layers thicknesses during the phase homogenization (PH) were derived. They were used to estimate the holding time required for dissolving completely the FeB layer.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"60 2","pages":"282 - 290"},"PeriodicalIF":0.8000,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Protection of Metals and Physical Chemistry of Surfaces","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1134/S2070205124701624","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}
引用次数: 0
Abstract
In this work, the Dybkov model was applied to simulate the boronizing kinetics of AISI 1045 steel and the subsequent phase homogenization (PH) by considering two fitting parameters and boride incubation times to reproduce the experimental thicknesses of FeB and (FeB + Fe2B) layers. The bilayer (FeB/Fe2B) was generated on AISI 1045 steel using the ultra fast boriding (UFB) process in the range of 1123 to 1223 K for 0.25–0.75 h. New expressions of analytical solutions of Dybkov model were then developed. As a main result, the boron activation energies in FeB and Fe2B were determined as 145.27 and 133.13 kJ mol–1 for FeB and Fe2B layers, respectively. The relations describing the evolution of layers thicknesses during the phase homogenization (PH) were derived. They were used to estimate the holding time required for dissolving completely the FeB layer.
期刊介绍：
Protection of Metals and Physical Chemistry of Surfaces is an international peer reviewed journal that publishes articles covering all aspects of the physical chemistry of materials and interfaces in various environments. The journal covers all related problems of modern physical chemistry and materials science, including: physicochemical processes at interfaces; adsorption phenomena; complexing from molecular and supramolecular structures at the interfaces to new substances, materials and coatings; nanoscale and nanostructured materials and coatings, composed and dispersed materials; physicochemical problems of corrosion, degradation and protection; investigation methods for surface and interface systems, processes, structures, materials and coatings. No principe restrictions exist related systems, types of processes, methods of control and study. The journal welcomes conceptual, theoretical, experimental, methodological, instrumental, environmental, and all other possible studies.
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