Thermophysical behavior of boron nitride and boron trioxide ceramics compounds with high energy electron fluence and swift heavy ion irradiated

摘要: Abstract We report differential scanning calorimetry (DSC) studies of boron nitride and trioxide compounds under different irradiation conditions. In the present work, (h-BN) (purity 99.8% density 2.29 g/cm3) (B2O3) 99.5% 3.10 g/cm3) samples were irradiated by using high intense electron beam swift heavy ions irradiation. Electron was carried out at fluence 4.16 × 1016, 1.20 × 1017 1.03 × 1018 cm−2 with energy 2.5 MeV. Whereas ion 132Xe 167 MeV/u 5 × 1012, 5 × 1013 3.83 × 1014 ion/cm2. The thermal parameter changes a mechanism conditions investigated. DSC curves low temperature for initial do not undergo phase transitions. However, 100 ≤ T ≤ 300 K range widely changed heat flow rate, specific capacity thermodynamic functions in is more completed. addition, each fluences, calculated found to increase from 0.002 J/g‧K 0.08 J/g‧K as increased. For irradiation, 0.005 J/g‧K 0.06 J/g‧K. results have revealed that there change.