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日本东洋曹达工业将在年内开始大量生产用作超导材的五个九的超高纯铌(99.9997％)。从去年起,由新材料研究所内的试验厂(年产能力10kg)出产样品,受到内外电子仪器厂家的高度评价,现正在研究建造年产能力为100kg的工厂。铌制品的形状有球状品(每个1～10g)和薄箔(厚为10μm),价格为2～3万日元/g,为普通市售铌的1000倍。高纯铌的生产推进了约瑟夫逊元件超导膜及高频加速空腔的超导材等用途方面的开发工作。
Japan Toyo Soda Industrial will start mass production of five nine ultra-high purity niobium (99.9997%) for use as superconducting materials during the year. Since last year, a pilot plant in the New Materials Institute (with an annual capacity of 10kg) has been produced and highly praised by both domestic and foreign electronic equipment manufacturers. We are now studying the construction of a factory with an annual production capacity of 100kg. The niobium products are spherical (1 to 10 g each) and thin foil (10 μm thick) at a price of 20,000 to 30,000 yen / g, which is 1,000 times that of a commercially available niobium. The production of high-purity niobium promotes the development of such applications as Josephson element superconducting films and superconducting materials for high-frequency accelerating cavities.