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1980年宝鸡有色金属研究所第六研究室的科研人员,利用电子轰击熔炼法,制成了直径为31.2—31.4毫米,长182毫米,重达1.28公斤的高纯铌单晶。据称,这是目前我国最大的铌单晶,同1979年日本“科学新闻”报导的苏联用电子束熔炼法获得的1公斤重铌
In 1980, the researchers in No.6 Research Laboratory of Baoji Nonferrous Metal Research Institute made the high purity niobium single crystal with the diameter of 31.2-31.4 mm, the length of 182 mm and the weight of 1.28 kg using electron impact melting method. Allegedly, this is China’s largest niobium single crystal, with the 1979 Japan’s “Science News” reported by the Soviet Union by electron beam melting method 1 kg of heavy niobium