Effects of Ag and Sr dual ions implanted into SiC

The effects of helium, strontium, and silver triple ions implanted into SiC

“…The absence of brighter regions in the SiC co-implanted with both Ag and Sr as reported in Ref. [ 11 ] is a proof that the brighter regions are helium bubbles while the darker regions might be Ag or Sr precipitates. Ag precipitates were observed in SiC co-implanted with Ag and Sr [ 11 ].…”

“…[ 11 ] is a proof that the brighter regions are helium bubbles while the darker regions might be Ag or Sr precipitates. Ag precipitates were observed in SiC co-implanted with Ag and Sr [ 11 ]. As expected, due to elevated implantation temperatures, the selected area diffraction (SAD) patterns of the as-implanted Ag + Sr + He–SiC indicate the lack of amorphization in the implanted SiC layer.…”

“…Several investigations have been conducted on the migration behaviour of Ag and Sr in SiC at high temperatures mimicking the operating and accident conditions of fission nuclear reactors - see Refs. [ [8] , [9] , [10] , [11] , [12] , [13] ] and references therein.…”

Effects of swift heavy ion irradiation and annealing on the microstructure and recrystallizationof SiC pre-implanted with Sr ions

“…Moreover, during the fission reaction, the light and heavy fission products with different energies (from a few keV to 100 MeV)includingthe energy range of swift heavy ions (SHIs> 5 MeV)are released. The released fission products collide with the SiC atoms and causeschangesto the initial microstructure of SiC (Friedland et al, 2012;Malherbe, 2013;Abdelbagi et al, 2019a;Hlatshwayo et al, 2020). It has been reported in the previous studies that the irradiation of SiC with ions of energies E< 0.5 MeV amorphized SiC depending on the irradiation fluence, temperature and ion mass (Wendler et al, 1998;Weber et al, 2001;Debelle et al, 2010;Abdelbagi et al, 2019a;Abdelbagi et al, 2019b).…”

“…Since SiC is the main fission products diffusion barrier in TRISO particle, it is important to study the mechanisms of the migration behaviour of Sr in SiC. Therefore, several studies have been carried out (such as a multilayer diffusion couple (Dwaraknath and Was, 2014), and ion implantation to investigate Sr behavior in SiC at very high temperatures (Friedland et al, 2012;Dwaraknath and Was, 2016;Abdelbagi et al, 2019a;Hlatshwayo et al, 2020)) to understand the transport mechanism of Sr through the SiC layer. In our previous study, we found that the swift heavy ion irradiation (SHIs) enhances the diffusion of implanted Sr in SiC (Abdelbagi et al, 2019a).…”