Northwestern University

The United States of America As Represented by the Department of Energy

Arch Development Corporation

Julia R Weertman

Vinayak P Dravid

D Lynn Johnson

Richard W Siegel

Thomas O Mason

Mao-Hua Teng

Brian R Elliott

Jeffrey A Eastman

Jonathon J Host

J-h Hwang

Carl J Youngdahl

G William Nieman

Mindy N Rittner

A process for producing multi-component and multiphase nanophase materials is provided wherein a plurality of elements are vaporized in a controlled atmosphere, so as to facilitate thorough mixing, and then condensing and consolidating the elements. The invention also provides for a multicomponent and multiphase nanocrystalline material of specified elemental and phase composition having component grain sizes of between approximately 1 nm and 100 nm. This material is a single element in combination with a binary compound. In more specific embodiments, the single element in this material can be a transition metal element, a non-transition metal element, a semiconductor, or a semi-metal, and the binary compound in this material can be an intermetallic, an oxide, a nitride, a hydride, a chloride, or other compound.

Method for producing nanocrystalline multicomponent and multiphase

A method of synthesizing encapsulated nanocrystals inside protective shells is disclosed. This method produces nanocrystals of metals, alloys, and compounds which are individually encapsulated by protective graphite shells which completely separate the nanocrystals from the environment. A separation method is also disclosed which eliminates most of all other debris except the encapsulated nanocrystals from the preparation product.

Graphite encapsulated nanophase particles produced by a tungsten arc

A method for preparing a treated nanocrystalline metallic material. The method of preparation includes providing a starting nanocrystalline metallic material with a grain size less than about 35 nm, compacting the starting nanocrystalline metallic material in an inert atmosphere and annealing the compacted metallic material at a temperature less than about one-half the melting point of the metallic material.

Nanocrystalline ceramic materials

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Evanston, IL, United States of America

Julia R Weertman