据英国伯明翰大学报道,采用区域熔炼法可制取高纯钆和钕,先在温度1800℃,真空条件下,用钽制坩埚炼成直径0.4—0.64厘米、长度10—16厘米的棒材,再进行精炼。区域熔炼是在真空室内进行,真空室内可获得2·10~(-10)毫米汞柱的放电,把棒材垂 According to the report of the University of Birmingham, high purity gadolinium and neodymium can be prepared by the zone melting method. First, a rod with a diameter of 0.4-0.64 cm and a length of 10-16 cm is made from a tantalum crucible at a temperature of 1800 DEG C and under vacuum. Refined. Area smelting is carried out in a vacuum chamber, the vacuum chamber can be obtained 2.10 ~ (-10) mm Hg discharge, the bar down