Lawrence Livermore National Security, LLC

Other

Sandia Corporation

Sandia National Laboratories

University of California

US Government As Represented by the Secretary of the Army

Nancy Yuan Yang

Joseph Collin Farmer

Larry Kaufman

Craig A Blue

John Harry Perepezko

Jeffery J Haslam

Enrique J Lavernia

Frank M G Wong

Robert Bayles

Sumner Daniel Day

Victor Champagne

Louis F Aprigliano

Arthur H Heuer

Olivia A Graeve

Jor-Shan Choi

Julie M Schoenung

Chuck K Lee

Jeffrey Walker

Paige Russell

Jon Kirkwood

Xiaoyan (Jane) Ji

John D K Rivard

Leslie K Kohler

Edward J Lemieux

Leo Ajdelsztajn

Joseph S Schoeniger

Thomas M Devine

Hung Pin Kao

Stephen Everett Guthrie

Phillip D Hailey

Walter Bauer

George John Thomas

A system for coating a surface comprises providing a source of amorphous metal, providing ceramic particles, and applying the amorphous metal and the ceramic particles to the surface by a spray. The coating comprises a composite material made of amorphous metal that contains one or more of the following elements in the specified range of composition: yttrium (&#x2267;1 atomic %), chromium (14 to 18 atomic %), molybdenum (&#x2267;7 atomic %), tungsten (&#x2267;1 atomic %), boron (&#x2266;5 atomic %), or carbon (&#x2267;4 atomic %).

Corrosion resistant amorphous metals and methods of forming corrosion resistant amorphous metals

A method of forming a corrosion resistant neutron absorbing coating comprising the steps of spray or deposition or sputtering or welding processing to form a composite material made of a spray or deposition or sputtering or welding material, and a neutron absorbing material. Also a corrosion resistant neutron absorbing coating comprising a composite material made of a spray or deposition or sputtering or welding material, and a neutron absorbing material.

Corrosion resistant neutron absorbing coatings

A method of coating a surface comprising providing a source of amorphous metal that contains manganese (1 to 3 atomic %), yttrium (0.1 to 10 atomic %), and silicon (0.3 to 3.1 atomic %) in the range of composition given in parentheses; and that contains the following elements in the specified range of composition given in parentheses: chromium (15 to 20 atomic %), molybdenum (2 to 15 atomic %), tungsten (1 to 3 atomic %), boron (5 to 16 atomic %), carbon (3 to 16 atomic %), and the balance iron; and applying said amorphous metal to the surface by a spray.

Compositions of corrosion-resistant Fe-based amorphous metals suitable for producing thermal spray coatings

A system for coating a surface comprising providing a source of iron-based amorphous metal, the iron-based amorphous metal including devitrified ferrite; directing the iron-based amorphous metal toward the surface by a spray for coating the surface; and separating at least a portion of the devitrified ferrite from the spray before the spray reaches the surface. Also an apparatus for coating a surface comprising a source of iron-based amorphous metal, the iron-based amorphous metal including devitrified ferrite; an application system for directing the iron-based amorphous metal toward the surface by a spray for coating the surface, and a system for separating at least a portion of the devitrified ferrite from the spray before the spray reaches the surface.

Magnetic separation of devitrified particles from corrosion-resistant iron-based amorphous metal powders

A technique for increasing the excitation and collection of evanescent fluorescence radiation emanating from a fiber optic sensor having a high refractive index (n,), dielectric thin film coating has been disclosed and described. The invention comprises a clad optical fiber core whose cladding is removed on a distal end, the distal end coated with a thin, non-porous, titanium dioxide sol-gel coating. It has been shown that such a fiber will exhibit increased fluorescence coupling due in part by 1) increasing the intensity of the evanescent field at the fiber core surface by a constructive interference effect on the propagating light, and 2) increasing the depth of penetration of the field in the sample. The interference effect created by the thin film imposes a wavelength dependence on the collection of the fluorescence and also suggests a novel application of thin films for color filtering as well as increasing collected fluorescence in fiber sensors. Collected fluorescence radiation increased by up to 6-fold over that of a bare fused silica fiber having a numerical aperture (N.A.) of O.6.

Method and apparatus for enhanced evanescent fluorescence and color filtering using a high refractive index thin film coating

A method for preparing controlled phase alloys useful for engineering and hydrogen storage applications. This novel method avoids melting the constituents by employing vapor transport, in a hydrogen atmosphere, of an active metal constituent, having a high vapor pressure at temperatures .apprxeq.300 C. and its subsequent condensation on and reaction with the other constituent (substrate) of an alloy thereby forming a controlled phase alloy and preferably a single phase alloy. It is preferred that the substrate material be a metal powder such that diffusion of the active metal constituent, preferably magnesium, and reaction therewith can be completed within a reasonable time and at temperatures .apprxeq.300 C. thereby avoiding undesirable effects such as sintering, local compositional inhomogeneities, segregation, and formation of unwanted second phases such as intermetallic compounds.

Synthesis of alloys with controlled phase structure

Growing community of inventors

Lafayette, CA, United States of America

Nancy Yuan Yang