Study Of Irradiation Damage Induced By High-energy Ne¹⁰⁺ions Irradiation In Amorphous FeSi?Zr?B,NiTa And ZrCuFeAl

The structure of metallic glass was short-range ordered and long-range disordered.Due to the disordered arrangment of atoms,it could accommodate irradiation damage.Meanwhile,owing to its good properties such as high strength and excellent corrosion resistance,the metallic glass was expected to be a candidate for radiation resistant material.14 MeV high-energy neutron irradiation,plasma irradiation and thermal irradiation existed in the irradiation environment of a fusion reactor.And the universe was also a highly irradiated environment with high-energy and high-charged ions.So,materials applied in irradiation environment need well anti-irradiation characteristics.The condition of high-energy and high-charged ions irradiation could be accurately controlled,such as energy and fluence.Meanwhile,high-energy and high-charged ions irradiation could produce more efficient damage in a short time than neutron irradiation.So it was more suitable for simulating a strong irradiation environment to investigate the damage behavior of materials.In this paper,high-energy and high-charged Ne¹⁰⁺ions were used to irradiate metallic glass Fe₈₀Si₇B₁₃,Fe₆₈Zr₇B₂₅,Ni₆₂Ta₃₈,Zr₆₀Cu₂₅Fe₅Al₁₀0 and crystal W.The damage behavior of the target material was analyzed from its microstructure,surface morphology and properties before and after irradiation.The irradiation experiment was performed on the medium energy irradiation terminal?SFC-T1?of the national laboratory of heavy-ion research facility?HIRFL?in the institute of modern physics in Lanzhou,China.The initial energy of Ne¹⁰⁺ions was6.17 MeV/u.The fluence were 6.5×10¹⁴,1.4×10¹⁵,2.6×10¹55 and 4.6×10¹55 ions/cm².Metallic glasses Fe₈₀Si₇B₁₃,Fe₆₈Zr₇B₂₅,Ni₆₂Ta₃₈8 and Zr₆₀Cu₂₅Fe₅Al₁₀0 remained amorphous after irradiated at different fluence.However,the arrangement of atoms in Fe₈₀Si₇B₁₃3 became orderly.A few vacancy-defects formed within 1?m from the surface of the metallic glass Fe₈₀Si₇B₁₃.Nano-hillocks and pits were generated on the surface of Fe-,Ni-and Zr-based metallic glasses.The surface roughness of materials increased,while the surface reflectivity decreased.The hardness of metallic glass Zr₆₀Cu₂₅Fe₅Al₁₀0 decreased slightly.After Ne¹⁰⁺ions irradiation,the spacing between crystal planes of crystal W increased.Some nano-hillocks were generated on the surface of W.The surface roughness of metal W increased,while the surface reflectivity decreased.The thickness of the ordered range of atoms in Fe₈₀Si₇B₁₃3 was greater than the calculated concentration distribution range of Ne¹⁰⁺ions by SRIM.Compared with low-energy and low-charged ions irradiation,high-energy and high-charged ions irradiation produced a wider irradiation influence region in the material.This was caused by high kinetic energy,high potential energy deposition of Ne¹⁰⁺ions,the disordered atomic arrangement of metallic glass and the energy dispersion of Ne¹⁰⁺ions which was passed through Al foils.The high potential deposition of high-charged Ne¹⁰⁺ions created nano-scale bumps and pits on the surface of material.After irradiation,only nano-scale surface morphology of Fe-,Ni-and Zr-based metallic glasses changed,without obvious damage such as cracks.Meanwhile,Fe-,Ni-,Zr-based metallic glasses was still amorphous.W was still crystal.Under the condition of this experiment,Fe-,Ni-,Zr-based metallic glasses and metal W have good irradiation stability.