Ishihara Chemical Co., Ltd.

Jun Furutani

Yoshihiko Takata

Tsukasa Kondo

Issei Satoh

Takayuki Maeshima

Hisakazu Sakai

A Ta&#x2014;Nb alloy powder which provides a capacitor having a higher capacitance than a Ta capacitor and a better thermal stability in terms of an oxide film than a Nb capacitor, the Ta&#x2014;Nb alloy powder being a Ta&#x2014;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 (&#x3bc;F&#xb7;V/g) is 250 k&#x3bc;F&#xb7;V/g or more, or further, a CV value per unit volume (&#x3bc;F&#xb7;V/mm) in terms of a molded body whose molding density &#x3c1; (g/cm) is &#x3c1;(g/cm)=&#x2212;0.012R+3.57, wherein R:Nb content (mass %) in an alloy, is 900 &#x3bc;F&#xb7;V/mmor more, and an anode element for a solid electrolytic capacitor using the alloy powder.

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Takashima, Japan

Jun Furutani