Study of Nb Reduction for Preparation of Niobium Suboxide as Electrolytic Capacitor Anode Material AITranslate

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Chinese Library Classification Number:TB34[一般工业技术—材料科学与工程]

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Study is made of the preparation of niobium suboxide by Nb reduction. Niobium Suboxide powder is prepared by agate grinding and mixing-reduction roasting-screening. The process were further optimized through orthogonal experiments and variance analysis. Physical and microscopic examination of the product is made through XRD and SEM. Niobium suboxide anode is prepared with method similar to that for tantalum electrolytic capacitor and its electric property is investigated by electrolytic capacitor anode testing. The results show that niobium suboxide prepared by Nb reduction of Nb2O5 has good electric property with specific capacity 69 500 μF · V/g,loss 11.25 %, leakage current （value of K） ≤ 1.8 × 10.4μA/（μF · V）, which are better than those of the Chinese national standard （GB/T 3136-- 1995） for FTal 6-- 300 tantalum powder for capacitor.