05-10-2017 дата публикации
Номер: US20170283916A1
A Ta-Nb alloy powder which has provides a capacitor having a higher capacitance than a Ta capacitor and a better thermal stability in terms of an oxide film is better than a Nb capacitor, the Ta-Nb alloy powder being a Ta-Nb alloy powder produced by a thermal CVD method, wherein a content of Nb is 1 to 50 mass %, and an average particle diameter of primary particles is 30 to 200 nm, preferably, a CV value per unit mass of the powder (μF·V/g) is 250 kμF·V/g or more, or further, a CV value per unit volume (μF·V/mm) in terms of a molded body whose molding density ρ (g/cm) is ρ(g/cm)=−0.012R+3.57, wherein R: Nb content (mass %) in an alloy, is 900 μF·V/mmor more, and an anode element for a solid electrolytic capacitor using the alloy powder. 15-. (canceled)6. A Ta-Nb alloy powder produced by a thermal CVD method , whereina content of Nb is 1 to 50 mass %, and an average particle diameter of primary particles is 30 to 200 nm.7. The Ta-Nb alloy powder according to claim 6 , wherein a CV value per unit mass (μF·V/g) when an anode element is formed therefrom is not less than 250 KμF·V/g.8. The Ta-Nb alloy powder according to claim 6 , wherein a CV value per unit volume (μF·V/mm) when an anode element is formed therefrom is not less than 900 μF·V/mm claim 6 , wherein the CV value is a value when an anode element whose molding density ρ (g/cm) is ρdefined by the following formula (1):{'br': None, 'sub': c', 'Nb, 'sup': '3', 'ρ(g/cm)=−0.012R+3.57 \u2003\u2003(1)'}{'sub': 'Nb', 'wherein R: Nb content (mass %) in an alloy is formed therefrom.'}9. The Ta-Nb alloy powder according to claim 7 , wherein a CV value per unit volume (μF·V/mm) when an anode element is formed therefrom is not less than 900 μF·V/mm claim 7 , wherein the CV value is a value when an anode element whose molding density ρ (g/cm) is ρdefined by the following formula (1):{'br': None, 'sub': c', 'Nb, 'sup': '3', 'ρ(g/cm)=−0.012R+3.57 \u2003\u2003(1)'}{'sub': 'Nb', 'wherein R: Nb content (mass %) in an alloy is ...
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