Other

Materials Innovation, Inc.

Anthony A Guiseppetti

David S Lashmore

Glenn L Beane

Frederick C Eichmiller

Christian E Johnson

Moshe P Dariel

David R Kelley

Menahem B Ratzker

A metallic composite solid, containing alloys and/or intermetallics, is formed by compacting at moderate pressure a mixture of powder particles, foils or sheets at a temperature close to room temperature, well below the melting temperature of the constituent components and without the addition of low melting metals such as mercury, indium or gallium acting as a sintering agent. This low temperature consolidation of the powder mixture is enhanced by having the surface oxide of the powder particles removed, prior to consolidation, and/or by coating the particles with an oxide-replacing metal such as silver or gold. The coating process may be replacement reactions, autocatalytic reduction or electrolytic reduction. The composite formation is assisted by the addition of a liquid acid such as fluoroboric acid, sulfuric acid, fluoric acid, adipic acid, ascorbic acid, or nitric acid. A preferred embodiment of the process for metal solid composite formation is a process for forming dental restorative materials at ambient temperatures and under pressure exerted by manual dental instrumentation.

Acid assisted cold welding and intermetallic formation and dental applications thereof

Acid assisted cold welding and intermetallic formation

Growing community of inventors

Frederick, MD, United States of America

Anthony A Guiseppetti