关键词: 
金属玻璃 /
离子束辐照损伤 /
金属W

摘要: 利用能量为3 MeV 的Ar12+ 离子辐照金属玻璃Al_7.5Cu_17.8Ni_10.7Zr₆₄和金属W，研究了金属玻璃的Ar 离子辐照损伤，辐照剂量分别为1x10¹⁴，1x10¹⁵ 和1x10¹⁶ ions/cm2。XRD分析发现在不同剂量辐照下Al_7.5Cu_17.8Ni_10.7Zr₆₄均保持非晶为主要结构。不同剂量辐照后的金属玻璃样品表面没有明显的辐照损伤，而金属W在剂量为1x10¹⁶ ions/cm² 时表面出现大面积不规则的裂纹和孔洞。AFM分析显示Al_7.5Cu_17.8Ni_10.7Zr₆₄的表面均方根粗糙度随辐照剂量的增大而增大；辐照后金属玻璃的表面硬度略有降低，而金属W的硬度有所升高。在低于金属玻璃的玻璃化转变温度时，金属玻璃Al7:5Cu17:8Ni10:7Zr64 的耐Ar12+ 溅射能力好于金属W。

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