Iowa State University Research Foundation Inc

Other

U.S. Department of Energy

Bruce Allan Cook

Joel Lee Harringa

Alan Mark Russell

Iver E Anderson

Alan Paul Constant

Yun Tian

Jason Won Goldsmith

Alaa AbdelAzim Elmoursi

Joel R Rieken

Robert Milner

Clifton Baxter Higdon

Peter Blau

Adam J Boesenberg

Qu Jun

Justin S Peters

Dave Byrd

Atiq Ahmed

John Evan Snyder

Palaniappa A Molian

S Bulent Biner

The present invention relates to CuAlalloys and CuAl-based bulk alloys and coatings that exhibit significantly increased hardness characteristics compared to traditional copper-aluminum alloys.

Hard and super-hard metal alloys and methods for making the same

A target for use in an ion beam sputtering apparatus made of at least two target tiles where at least two of the target tiles are made of different chemical compositions and are mounted on a main tile and geometrically arranged on the main tile to yield a desired chemical composition on a sputtered substrate. In an alternate embodiment, the tiles are of varied thickness according to the desired chemical properties of the sputtered film. In yet another alternate embodiment, the target is comprised of plugs pressed in a green state which are disposed in cavities formed in a main tile also formed in a green state and the assembly can then be compacted and then sintered.

Ion beam sputter target and method of manufacture

A highly wear resistant sintered, hot pressed, or otherwise compacted ceramic composite material is described, consisting of two discrete phases of the form AlMgBwhere x and y &#x2266;1 or like hard, orthorhombic compounds, and TiBor like Group IVB transition metal di-borides, and with an unexpectedly high content of transition metal di-boride in the range from 40 to 90 percent (28 to 85 volume percent).

Wear-resistant boride composites with high percentage of reinforcement phase

A neutron detecting and method of use for a semiconducting material having a formula of M1M2Bwhere M1 is aluminum, magnesium, silver, sodium or scandium and M2 is boron, chromium, erbium, holmium, lithium, magnesium, thulium, titanium, yttrium, or gadolinium.

[object Object]

Performance and reliability of microelectromechanical system (MEMS) components enhanced dramatically through the incorporation of protective thin film coatings. Current-generation MEMS devices prepared by the LIGA technique employ transition metals such as Ni, Cu, Fe, or alloys thereof, and hence lack stability in oxidizing, corrosive, and/or high temperature environments. Fabrication of a superhard, self-lubricating coating based on a ternary boride compound AlMgBis described in this letter as a potential breakthrough in protective coating technology for LIGA microdevices. Nanoindentation tests show that hardness of AlMgBfilms prepared by pulsed laser deposition ranges from 45 GPa to 51 GPa, when deposited at room temperature and 573 K, respectively. Extremely low friction coefficients of 0.04-0.05, which are thought to result from a self-lubricating effect, have also been confirmed by nanoscratch tests on the AlMgBfilms. Transmission electron microscopy studies show that the as-deposited films are amorphous, regardless of substrate temperature; however, analysis of FTIR spectra suggests that the higher substrate temperature facilitates formation of the Bicosahedral framework, therefore leading to the higher hardness.

A composite of M/AlMgBor M alloy/AlMgBis synthesized, where M=Al, Ti, W, or Cu. Small particles and/or fibers of AlMgBare distributed throughout a metal matrix to strengthen the resulting composite.

Ultra-hard boride-based metal matrix reinforcement

This invention relates to a ductile binder phase for use with AlMgBand other hard materials. The ductile binder phase, a cobalt-manganese alloy, is used in appropriate quantities to tailor good hardness and reasonable fracture toughness for hard materials so they can be used suitably in industrial machining and grinding applications.

Ductile binder phase for use with A1MgB14 and other hard materials

A ceramic material which is an orthorhombic boride of the general formula: AlMgB :X, with X being a doping agent. The ceramic is a superabrasive, and in most instances provides a hardness of 40 GPa or greater.

Superabrasive boride and a method of preparing the same by mechanical alloying and hot pressing

A ceramic material which is an orthorhombic boride of the general formula: AlMgB.sub.14 :X, with X being a doping agent. The ceramic is a superabrasive, and in most instances provides a hardness of 40 GPa or greater.

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Ankeny, IA, United States of America

Bruce Allan Cook