Method to agglomerate metal particles and metal particles having improved properties
OwnerBhamidipaty K. D. P. Raoinventor
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Abstract
A method to agglomerate metal particles such as tantalum and niobium powders is described which includes combining a volatilizable or vaporizable liquid with the particles to form wet particles; compacting the wet particles; drying the compacted wet particles to form a cake; and heat treating the cake to form the agglomerated particles. Also described are agglomerated particles obtained by this method and further, particles, preferably tantalum or niobium powder, having a flow rate of at least about 65 mg/sec and/or an improved pore size distribution, and/or a higher Scott Density. Capacitors made from tantalum powder and niobium powder are also described.
Claims50
A method to agglomerate tantalum or niobium particles or both comprising:
- a) combining a volatilizable or vaporizable liquid with particles comprising tantalum, niobium, or both to form wet particles;
- b) compacting the wet particles;
- c) drying the wet compacted particles to form a cake;
- and
- d) heat treating the cake.
Particles comprising tantalum, niobium, or both, having a flow rate of at least about 65 mg/sec and a pore size distribution greater than unagglomerated particles.
A method to agglomerate metal particles comprising:
- a) combining a volatilizable or vaporizable liquid with metal particles to form wet particles;
- b) compacting the wet metal particles;
- c) drying the wet compacted metal particles to form a cake;
- and
- d) heat treating the cake.
A method to agglomerate metal particles comprising:
- a) combining a volatilizable or vaporizable liquid with particles comprising wet metal particles;
- b) vibrating the wet particles;
- c) drying the wet metal particles to form a cake;
- and
- d) heat treating the cake.
Dependencies are inferred from the claim text.