Academic Journal
Investigating the thermal decomposition of BP into B12P2: experimental insights and kinetic modelling at high temperatures
| العنوان: | Investigating the thermal decomposition of BP into B12P2: experimental insights and kinetic modelling at high temperatures |
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| المؤلفون: | Tahan, Yves, Rapaud, Olivier, Pradeilles, Nicolas, Carles, Pierre, Maître, Alexandre, Dine, Sarah, Vrel, Dominique, Moutaabbid, Hicham, Godec, Yann Le, Genevois, Cécile, Allix, Mathieu |
| المساهمون: | Institut de Recherche sur les CERamiques (IRCER), Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Matériaux Procédés Environnement Ouvrages (IMPEO), Université de Limoges (UNILIM)-Université de Limoges (UNILIM), Laboratoire des Sciences des Procédés et des Matériaux (LSPM), Institut Galilée-Université Sorbonne Paris Cité (USPC)-Centre National de la Recherche Scientifique (CNRS)-Université Sorbonne Paris Nord, Institut de minéralogie, de physique des matériaux et de cosmochimie (IMPMC), Muséum national d'Histoire naturelle (MNHN)-Institut de recherche pour le développement IRD : UR206-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Conditions Extrêmes et Matériaux : Haute Température et Irradiation (CEMHTI), Université d'Orléans (UO)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS), ANR-20-ASTR-0020,CAPBAB,Céramiques légères A base de Phosphure de Bore pour Applications Balistiques(2020) |
| المصدر: | ISSN: 1359-6454 ; Acta Materialia ; https://hal.science/hal-04781518 ; Acta Materialia, In press, 283, pp.120495. ⟨10.1016/j.actamat.2024.120495⟩. |
| بيانات النشر: | HAL CCSD Elsevier |
| سنة النشر: | 2024 |
| المجموعة: | Université de Limoges: HAL |
| مصطلحات موضوعية: | Boron phosphide, Thermal decomposition, Kinetic modelling, Nucleation-growth mechanism, [CHIM.MATE]Chemical Sciences/Material chemistry |
| الوصف: | International audience ; This study investigates the thermal decomposition of BP into B12P2, with a particular focus on the heterogeneous solid-gas mechanism involving BP powders synthesized via self-propagating high temperature reactions. Various techniques, including XRD, TGA, SEM, TEM, EELS and SAED, were combined to examine morphological and structural changes at different temperatures. The results reveal an ignition temperature for decomposition at 1120 °C, beyond which BP grains undergo fragmentation into smaller particles, accompanied by the release of phosphorous gases (P2(g), P4(g)). Additionally, Rietveld refinements on thermally treated powders facilitated the determination of advancement rate values of the decomposition reaction under different isothermal conditions. Based on these kinetic data obtained at 1300 °C, a one-process nucleation-growth model with instantaneous nucleation and anisotropic growth has be established. In particular, the law, which describes the process for a spherical grain with inward development and a reaction occurring at the internal interface as the step determining the rate, displayed a strong correlation coefficient, offering novel insights into the kinetic evolution of the BP to B12P2 conversion. These results contribute to a deeper understanding of the thermal decomposition process and its underlying elementary mechanisms. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1016/j.actamat.2024.120495 |
| الاتاحة: | https://hal.science/hal-04781518 https://hal.science/hal-04781518v1/document https://hal.science/hal-04781518v1/file/1-s2.0-S1359645424008449-main%20%281%29.pdf https://doi.org/10.1016/j.actamat.2024.120495 |
| Rights: | http://creativecommons.org/licenses/by/ ; info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.175CDBDB |
| قاعدة البيانات: | BASE |
| DOI: | 10.1016/j.actamat.2024.120495 |
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