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    • 5. 发明授权
    • Process for preparing praseodynium metal or praseodymium-containing alloy
    • 制备镨金属或含镨合金的方法
    • US4966662A
    • 1990-10-30
    • US396701
    • 1989-08-22
    • Hideo Tamamura
    • Hideo Tamamura
    • C22C1/02C25C3/34C25C3/36
    • C25C3/34C22C1/02C25C3/36
    • A process for the preparation of a praseodymium-iron alloy or a praseodymium-neodymium-iron alloy, which comprises using praseodymium fluoride (PrF.sub.3) or a mixture of praseodymium fluoride and neodymium fluoride (NdF.sub.3) as the starting material and carrying out the electrolysis in fused a salt bath having a composition comprising substantially 5 to 34% by weight of PrF.sub.3 or a mixture of PrF.sub.3 and NdF.sub.3 and 95 to 66% by weight of lithium fluoride (LiF) by using an iron cathode, and a process for the preparation of praseodymium metal or a praseodymium-neodymium alloy which comprises using praseodymium fluoride (PrF.sub.3) or a mixture of praseodymium fluoride and neodymium fluoride (NdF.sub.3) as the starting material and carrying out the electrolysis in a fused salt bath having a comprising substantially 5 to 75% by weight of PrF.sub.3 or the mixture of PrF.sub.3 and NdF.sub.3 and 95 to 25% by weight of lithium fluoride (LiF) by using a cathode of carbon or an infusible metal.
    • 一种制备镨 - 铁合金或镨 - 钕 - 铁合金的方法,其包括使用氟化镨(PrF 3)或氟化镨和氟化钕(NdF 3)的混合物作为起始原料并进行电解 将含有基本上为5〜34重量%的PrF 3或PrF 3与NdF 3的混合物和95〜66重量%的氟化锂(LiF)的组合物通过使用铁阴极熔融而成的盐浴,以及制备 镨金属或镨钕合金,其包括使用氟化镨(PrF 3)或氟化镨和氟化钕(NdF 3)的混合物作为起始材料,并在熔融盐浴中进行电解,所述熔融盐浴包含基本上5至75% 的PrF3或PrF3和NdF3的混合物以及95〜25重量%的氟化锂(LiF),通过使用碳或不熔金属的阴极。