초록 ▼

Doped tantalum pellets with nitrogen is described wherein the resulting pellets are substantially free of nitride precipitate on their outer surfaces. The tantalum pellets are formed by heating the pellets to a temperature of from about 1000.degree.-1400.degree. C. in a nitrogen gas atmosphere and t

Doped tantalum pellets with nitrogen is described wherein the resulting pellets are substantially free of nitride precipitate on their outer surfaces. The tantalum pellets are formed by heating the pellets to a temperature of from about 1000.degree.-1400.degree. C. in a nitrogen gas atmosphere and then in a vacuum which causes nitrogen contacting a tantalum pellet to diffuse into the inner portion of the pellet instead of forming a precipitate. The resulting pellets have improved

대표청구항 ▼

[ What is claimed is:] [1.] A tantalum capacitor comprising:a porous core comprising tantalum, nitrogen, and manganese;a tantalum pentoxide dielectric film on said porous core;a layer comprising a conductive polymer on said dielectric film and;a layer comprising carbon, graphite and silver on said c

[ What is claimed is:] [1.] A tantalum capacitor comprising:a porous core comprising tantalum, nitrogen, and manganese;a tantalum pentoxide dielectric film on said porous core;a layer comprising a conductive polymer on said dielectric film and;a layer comprising carbon, graphite and silver on said conductive polymer;wherein said dielectric film is substantially free of nitride precipitate.