BINDER SYSTEMS FOR POWDER METALLURGY COMPACTS.

摘要

The application of polypropylene carbonate in solution to valve metal powders having relatively high surface area, then evaporating the solvent under static (non agitating) conditions. The static drying of the coated valve metal powder produces a semi solid cake which may be converted into a free flowing powder via screening. Valve metal powders so coated with polypropylene carbonate are particularly well suited for the fabrication of powder metallurgy anode bodies used for the manufacture of electrolytic capacitors.