铌粉，金属铌的粉末，在其表面生成的致密氧化膜具有单向导电的阀金属性质。
本发明涉及阀金属粉末的掺氮方法，以及通过该方法获得的含氮钽粉 和含氮铌粉。
The invention relates to a nitrating method of a valve metal powder, and a nitrogenous tantalum powder and a nitrogenous niobium powder which are obtained by the nitrating method.
由本发明的铌粉烧结体制造的电容器可防止长时间使用过程中的性能下降，可靠性高。
A capacitor manufactured from the sintered body of a niobium powder of the present invention is prevented from deterioration in the performance for a long period of time and has high reliability.
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