Other

Government of the United States of America, As Represented by the Secretary of Commerce

Materials Innovation, Inc.

Menahem B Ratzker

David S Lashmore

Glenn L Beane

Frederick C Eichmiller

Christian E Johnson

Moshe P Dariel

David R Kelley

Anthony A Guiseppetti

John A Tesk

Anthony A Giuseppetti

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

Acid assisted cold welding and intermetallic formation and dental

In a process of electroforming a metal to produce a dental prosthesis, the improvement comprising employing as the metal a metallic glass alloy such as cobalt and phosphorus containing 8-30% by weight of phosphorus. The electrolytic bath comprises:

Electroforming of metallic glasses for dental applications

Growing community of inventors

Silver Spring, MD, United States of America

Menahem B Ratzker