Resistance to H+ induced irradiation damage in metallic glass Fe80Si7.43B12.57

The experiment selected metallic glass Fe80Si7.43B12.57 irradiated at the fluence of 1 × 1018 ions/cm2 for cross-sectional TEM analysis. Panel a shows a corresponding cross-sectional TEM morphology. As shown in panel a, no significant damage layer and hydrogen bubble gathering phenomenon appeared on the sectional morphology of Fe80Si7.43B12.57 due to the disordered structure of metallic glass and the high solubility and diffusivity of H+ in solid, even in the region of near-range (Zone III in panel a). As can be seen from the EDS image in panel b, the distribution of both Fe and Si along the depth direction showed a linear trend. It could be observed from the HRTEM images (panels c, d and e) that the atomic arrangements at different positions (Zones I, II and III as shown in panel a) were in a disordered state, and even remained disordered in the near ion range (panel e). SAD images showed that the diffraction patterns for the three positions (Zones I, II and III) were halo rings. This indicated that irradiation did not significantly affect the structure and component distribution along the depth direction in Fe80Si7.43B12.57 at the fluence of 1 × 1018 ions/cm2. Metallic glass Fe80Si7.43B12.57 has H+ irradiation-resistant properties and may have good prospects of application in irradiation environment.78