Anti-radiation Performance Against Ar¹²⁺ Ions of Bulk Metallic Glass Al_7.5Cu_17.8Ni_10.7Zr₆₄

Key words: 
• metallic glass /
• ions beam irradiation damage /
• metal tungsten

Abstract: Ar12+ ions with the energy of 3 MeV were used to irradiate the metallic glass Al7:5Cu17:8Ni10:7Zr64 and metal tungsten, in order to study the irradiation damage of metallic glasses. The irradiation dos was1x10¹⁴，1x10¹⁵ and 1x10¹⁶ ions/cm2, respectively. The XRD analysis showed that Al_7.5Cu_17.8Ni_10.7Zr₆₄ remained amorphous structure after irradiation exposure to different doses. After irradiation, there was no obvious irradiation damage on the surface of the metallic glass, while a large area of irregular cracks and holes were found on the surface of metal tungsten when the dose is up to 1x10¹⁶ ions/cm2. The AFM result showed the surface rootmean square roughness of  Al_7.5Cu_17.8Ni_10.7Zr₆₄ increased with the increase of irradiation doses. The surface hardness of the metallic glass decreased slightly, while the hardness of metal tungsten increased after irradiation.It is concluded that the anti-radiation performance against Ar12+ ions of metallic glassAl_7.5Cu_17.8Ni_10.7Zr₆₄ was better than metal tungsten when irradiated at temperatures below the glass-transition temperature of the metallic glass Al_7.5Cu_17.8Ni_10.7Zr₆₄