【摘要】 熔态Pd_40.5Ni_40.5P₁₉,合金在1.2落管中被分散成液滴,并在自由下落过程中凝固.由于实验是在纯净的氦气氛下的无容器环境中进行,因而消除了由于表面氧化层的存在以及由于液态合金与容器壁的接触所造成的非均匀成核,得到了迄今尺寸最大的直径2mm的规则金属玻璃球体.更多还原

【Abstract】 The dispersed molten droplets of Pd40.5Ni40.5P19 alloy solidified during fall down in a 1.2 m drop-tube which is filled with purified helium at 0.8 atmosphere. Owing to solidificat ion without container occurring at high undercooling, the heterogeneous nucleation was inhibited and the metallic glass sphere of 2 mm in diameter was obtained, which is the largest one prepared by dropping tube up to now.更多还原