High pressure investigations on neutron irradiated ferroboron
Source abstract
Abstract
This study reports the pressure effect on structural stability of neutron irradiated ferroboron systems. Ferroboron, a mixture of boron and iron, has been found to have three phases, i.e., FeB, Fe2B and Fe3B. Studies have been conducted on single-phase Fe2B and ferroboron. Fe2B adopts tetragonal structure at ambient and undergoes structural transition to orthorombhic phase at 6 GPa. Further, Fe2B is irradiated with neutrons with a fluence of ~1017 n cm–2 and yields bulk modulus of 254 GPa, which is 16% enhancement as compared to unirradiated sample. The defects are estimated by the use of SRIM code. Total displacement per atom (dpa) in Fe2B for the irradiation fluence is found to be 5.53×10−5. The study also shows that phase transition seen in pristine Fe2B is inhibited upon neutron irradiation under pressure up to 24 GPa. Similar result was obtained on ferroboron mixture, irradiated with a neutron fluence of 8.18×1021 n cm−2 with dpa of 2.8. The irradiated sample is found to be stable up to 16 GPa.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Fusion materials and technologies · Nuclear Materials and Properties · Boron and Carbon Nanomaterials Research
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