Study of ZrC nano particles under the influence of gamma radiation by DSC nad TG methods

All experiments in the presented work were comparatively conducted before and after gamma irradiation (at doses of 5 Mrad, 15 Mrad, 50 Mrad and 150 Mrad). DSC spectra of nano ZrC particles were recorded in the temperature range of 25-950 C, respectively. The behavior of OH groups adsorbed on the surface of nanoparticles and other processes were studied as a function of temperature by DSC and TG curves. Nanocrystalline ZrC particles, in addition to being a fairly durable inorganic material, also have a large specific surface area. At the same time, the three-dimensional spatial structure of ZrC nanoparticles is strong, which leads to the expansion of their field of application. The possible three-dimensional spatial structure of ZrC nanoparticles ensures their high diffusion capacity, as a result, the use of these compounds in high-sensitivity sensor technology becomes more feasible. Possible changes in the nanoparticle under the influence of temperature were explained by DSC and TG curves. Some results obtained from FTIR spectrometry of nanoparticles were explained by DSC or TG curves. DSC spectra of the samples were recorded on a ^Perkin Elmer STA 6000 device in the temperature range of 25-950 C and at a heating rate of 5C/min. In order to remove combustion products from the system and prevent the condensation process, argon inert gas was used and supplied to the system at a rate of 20 ml/min. A standard 177.78 mg aluminum-oxide-based container was used. Additional OH groups adsorbed on the nanoparticle surface leave the system during heating up to 300 C. From the TG curves, it was known that the mass partially increases as a result of the oxidation occurring in the nanoparticles in the temperature range of 300-500 C. At the same time, at temperature T>500 C, a further decrease in mass is observed, which is explained by CO₂ gas leaving the nanoparticle.