Thermal parameter investigation of nanocrystalline BN particles under the neutron irradiation

IF 3.1 2区化学 Q2 CHEMISTRY, ANALYTICAL

Thermochimica Acta Pub Date : 2025-03-15 DOI:10.1016/j.tca.2025.179982

Elchin M. Huseynov , Tural G. Naghiyev , Nijat R. Abbasov

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Abstract

The thermal properties of nanocrystalline boron nitride (BN) particles are crucial for their use in high-temperature and radiation-resistant applications. However, the effects of neutron irradiation on these properties remain poorly understood. This study aims to investigate the thermal behavior of nanocrystalline BN particles before and after exposure to neutron irradiation, with a focus on changes in key thermo-physical parameters. To achieve this, we employed differential scanning calorimetry (DSC) to determine the Gibbs free energy of BN nanoparticles across a temperature range of 300 K to 1270 K. Differential thermal analysis (DTA) was also used to examine phase transitions and potential amorphization processes that occur in the particles post-irradiation. Both enthalpy and entropy were calculated for the nanocrystalline BN system before and after neutron irradiation, with the results supported by theoretical models. Our findings reveal significant changes in the thermal properties of BN nanoparticles induced by neutron irradiation, including shifts in phase behavior and alterations in the thermodynamic parameters. These results provide a deeper understanding of the material's behavior under neutron irradiation, which is critical for optimizing the use of BN in nuclear and other high-radiation environments.

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来源期刊

Thermochimica Acta 化学-分析化学

CiteScore

6.50

自引率

8.60%

发文量

210

审稿时长

40 days

期刊介绍： Thermochimica Acta publishes original research contributions covering all aspects of thermoanalytical and calorimetric methods and their application to experimental chemistry, physics, biology and engineering. The journal aims to span the whole range from fundamental research to practical application. The journal focuses on the research that advances physical and analytical science of thermal phenomena. Therefore, the manuscripts are expected to provide important insights into the thermal phenomena studied or to propose significant improvements of analytical or computational techniques employed in thermal studies. Manuscripts that report the results of routine thermal measurements are not suitable for publication in Thermochimica Acta. The journal particularly welcomes papers from newly emerging areas as well as from the traditional strength areas: - New and improved instrumentation and methods - Thermal properties and behavior of materials - Kinetics of thermally stimulated processes