HT-6B等离子体对金属玻璃的辐照效应

THE EFFECT OF PLASMA RADLATION ON METALLIC GLASSES IN THE HT-6B TOKAMAK

金属玻璃是由熔态经急冷淬火形成的非晶态金属,具有很高的力学强度和良好的抗腐蚀、耐辐照性能。关于中子、质子、电子和He、Ar离子等分别对金属玻璃的辐照损伤效应已有一些研究报道。托卡马克装置中的等离子体辐照是一种十分复杂的过程,它包括有质子、电子、光子、氘核和少量杂质重离子与中性粒子的混合辐照。本工作研究了某些金属玻璃在托卡马克装置真空器壁处经等离子体辐照以后的结构变化,探索金属玻璃用于托卡马克核聚变装置真空器壁的可能性。

Some metallic glasses,a-Pd82 Si16,a-Fe80.6 B13.5 Si3.6 C2.3-and a-Cu55 Zr45(at%),were irradiated by plasma in the HT-6B tokamak.The structure changes of these metallic glasses after irradiation were investigated by XRD,DSC and TEM.No radiation damage on the surfaces and no sigh of crystallization of the specimens were found.A glass phase separation in a-Cu55;Zr45 was observed after irradiation,but not in the other two glasses.