01-04-2015 дата публикации
Номер: CN104480319A
Принадлежит:
The invention discloses a preparation method of a high-purity niobium ingot casting for a radio frequency superconducting cavity. The preparation method comprises performing vacuum electronic torch melting on a niobium batten for 3-7 times, thereby obtaining the high-purity niobium ingot casting; the specific electric energy of the vacuum electronic torch melting is 8-12 degrees per kilometer, and the vacuum degree of the vacuum electronic torch melting is not greater than 5*10<-3>Pa. The preparation method is reasonable in design, simple, simple and convenient to operate; the practical problems existing in the traditional niobium ingot casting production process can be effectively solved and the requirements on stabilized and large-scale production of the high-purity niobium ingot casting for the radio frequency superconducting cavity are met; the vacuum electronic torch melting is performed for 3-7 times, and by controlling the specific electric energy, the RRR value and the components ...
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