Treatment of tantalum powder

Details Treatment of tantalum powder Treatment of tantalum powder

C - Chemistry, Metallurgy

23

F

53/143, 75/155

C23F 11/18 (2006.01) B22F 1/00 (2006.01)

Patent

CA 1220034

TREATMENT OF TANTALUM POWDER Abstract of the Disclosure Tantalum powder for electrolytic capacitors is treated with a non-aqueous solution of ammonium thiocyanate in N,N'-dimethylformamide or N-methyl- pyrrolidinone after the powder has been subjected to a thermal treatment step in the absence of oxygen and before the powder is exposed to an oxygen-containing fluid so as to prevent oxygen uptake by the powder. The thermal treatment step is carried out at 700°C and above.

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