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Process for making silver metal filaments

Patent ·
OSTI ID:870937
 [1]
  1. Oak Ridge, TN
+ Show Author Affiliations

A process for making silver metal particles from silver salt particles having the same morphology. Precursor silver salt particles selected from the group consisting of silver acetate and silver sulfide having a selected morphology are contained in a reactor vessel having means for supporting the particles in an air suspension to prevent the agglomeration of the particles. Air is flowed through the reactor vessel at a flow rate sufficient to suspend the particles in the reactor vessel. The suspended precursor silver salt particles are heated to a processing temperature and at a heating rate below which the physical deterioration of the suspended precursor silver salt particles takes place. The suspended precursor silver salt particles are maintained at the processing temperature for a period of time sufficient to convert the particles into silver metal particles having the same morphology as the precursor silver salt particles.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
Assignee:
United States of America as represented by Department of Energy (Washington, DC)
Patent Number(s):
US 5626645
OSTI ID:
870937
Country of Publication:
United States
Language:
English

References (4)

Acicular crystals of sodium tungsten bronzes journal August 1993
The pseudomorphic conversion of acicular crystals of sodium tungsten bronze into WC/W journal January 1994
The Growth of Silver Whiskers by Reduction of Silver Halogenides journal January 1993
The growth and morphology of silver whiskers journal October 1974

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