摘要:
利用能量为3 MeV 的Ar12+ 离子辐照金属玻璃Al
7.5Cu
17.8Ni
10.7Zr
64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1x10
14,1x10
15 和1x10
16 ions/cm2。XRD分析发现在不同剂量辐照下Al
7.5Cu
17.8Ni
10.7Zr
64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1x10
16 ions/cm
2 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
10.7Zr
64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 was1x10
14,1x10
15 and 1x10
16 ions/cm2, respectively. The XRD analysis showed that Al
7.5Cu
17.8Ni
10.7Zr
64 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 1x10
16 ions/cm2. The AFM result showed the surface rootmean square roughness of Al
7.5Cu
17.8Ni
10.7Zr
64 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
10.7Zr
64 was better than metal tungsten when irradiated at temperatures below the glass-transition temperature of the metallic glass Al
7.5Cu
17.8Ni
10.7Zr
64