David W Scruggs

US Patent:

55672515, Oct 22, 1996

Filed:

Apr 6, 1995

Appl. No.:

8/417749

Inventors:

Atakan Peker - Pasadena CA
William L. Johnson - Pasadena CA
Robert Schafer - Worthington OH
David M. Scruggs - Oceanside CA

Assignee:

Amorphous Alloys Corp. - Laguna Niguel CA

International Classification:

C22C 900

US Classification:

148522

Abstract:

A reinforcement-containing metal-matrix composite material is formed by dispersing pieces of reinforcement material throughout a melt of a bulk-solidifying amorphous metal and solidifying the mixture at a sufficiently high rate that the solid metal matrix is amorphous. Dispersing is typically accomplished either by melting the metal and mixing the pieces of reinforcement material into the melt, or by providing a mass of pieces of the reinforcement material and infiltration of the molten amorphous metal into the mass. The metal preferably has a composition of about that of a eutectic composition, and most preferably has a composition, in atomic percent, of from about 45 to about 67 percent total of zirconium plus titanium, from about 10 to about 35 percent beryllium, and from about 10 to about 38 percent total of copper plus nickel.

US Patent:

46083197, Aug 26, 1986

Filed:

Sep 10, 1984

Appl. No.:

6/649070

Inventors:

Gerald A. Croopnick - Trabuco Cyn CA
David M. Scruggs - San Juan Capistrano CA

Assignee:

Dresser Industries, Inc. - Dallas TX

International Classification:

C22F 100
C21D 900
C23F 100
B01J 3200

US Classification:

428613

Abstract:

An extended surface area amorphous metallic article and process for preparation thereof, wherein a homogeneous amorphous metallic alloy is phase-separated to produce two interconnected, internally continuous, amorphous phases, and then one phase is removed. Preferably, the homogeneous metallic alloy has a composition associated with a eutectic between at least two solid solutions. Phase separation is accomplished by exposing the alloy to a temperature which is below the crystallization temperature and also below the phase separation temperature for that composition. Removal of one phase may be accomplished by leaching in a liquid solution, or by vaporization. The resulting article has an extended surface area of the amorphous phase that is not removed. A porous membrane having extended internal surface area may be prepared by continuing the removal process to the removal of one phase throughout the entire thickness of the article. The extended surface area articles, wherein the extended surface area is of an amorphous metal, enjoy particular advantages when used as catalysts.

US Patent:

45296685, Jul 16, 1985

Filed:

May 22, 1984

Appl. No.:

6/612860

Inventors:

Gerald A. Croopnick - Trabuco Canyon CA
David M. Scruggs - San Juan Capistrano CA

Assignee:

Dresser Industries, Inc. - Dallas TX

International Classification:

C25D 356

US Classification:

428665

Abstract:

An electrodeposition process for depositing a boron-containing amorphous metallic layer onto a cathode from an electrodeposition bath having borophosphoric acid, dimethylamineborane or diethylamineborane; an ammonium salt of a hydroxycarboxylic acid or amino acid; and a source of the metallic ions. In one embodiment, tungsten-cobalt-boron amorphous alloys are deposited onto the cathode from a bath having borophosphoric acid, an ammonium salt of a hydroxycarboxylic acid or amino acid, a tungsten-containing salt and a cobalt-containing salt. In the preferred embodiment, the tungsten-containing salt is sodium tungstate, the cobalt-containing salt is cobalt sulphate, and the ammonium salt of a hydroxycarboxylic acid is ammonium citrate or ammonium tartrate. A range of bath compositions may be utilized to deposit the amorphous tungsten-cobalt-boron alloys onto the cathode, such alloys having high hardness and wear resistance and also having sufficient ductility to avoid cracking of the amorphous layer in fabrication and use. The electrodeposition process is preferably conducted at a voltage greater than the hydrogen over-voltage of the bath composition, and at a current density greater than about 20 milliamps per square centimeter.

US Patent:

58662545, Feb 2, 1999

Filed:

Oct 15, 1996

Appl. No.:

8/732546

Inventors:

Atakan Peker - Pasadena CA
William L. Johnson - Pasadena CA
Robert Schafer - Worthington OH
David M. Scruggs - Oceanside CA

Assignee:

Amorphous Technologies International - Laguna Niguel CA

International Classification:

I22C 900

US Classification:

428378

Abstract:

A reinforcement-containing metal-matrix composite material is formed by dispersing pieces of reinforcement material throughout a melt of a bulk-solidifying amorphous metal and solidifying the mixture at a sufficiently high rate that the solid metal matrix is amorphous. Dispersing is typically accomplished either by melting the metal and mixing the pieces of reinforcement material into the melt, or by providing a mass of pieces of the reinforcement material and infiltration of the molten amorphous metal into the mass. The metal preferably has a composition of about that of a eutectic composition, and most preferably has a composition, in atomic percent, of from about 45 to about 67 percent total of zirconium plus titanium, from about 10 to about 35 percent beryllium, and from about 10 to about 38 percent total of copper plus nickel.

US Patent:

57728038, Jun 30, 1998

Filed:

Aug 26, 1996

Appl. No.:

8/702918

Inventors:

Atakan Peker - Aliso Viejo CA
William L. Johnson - Pasadena CA
David M. Scruggs - Oceanside CA

Assignee:

Amorphous Technologies International - Laguna Niguel CA

International Classification:

C22C 4510

US Classification:

148561

Abstract:

A torsionally reacting spring, such as a helical spring, a torsion bar, or a torsion tube, requires the ability to torsionally deform elastically during service and return to its original, undeformed shape. The torsionally reacting spring is made of a bulk-deforming amorphous alloy which may be cooled from the melt at a cooling rate of less than about 500. degree. C. per second, yet retain an amorphous structure. A preferred bulk-solidifying amorphous alloy has a composition, in atomic percent, of from about 45 to about 67 percent total of zirconium plus titanium, from about 10 to about 35 percent beryllium, and from about 10 to about 38 percent total of copper plus nickel, plus incidental impurities, the total of the percentages being 100 atomic percent.

US Patent:

55675328, Oct 22, 1996

Filed:

Aug 1, 1994

Appl. No.:

8/284153

Inventors:

Atakan Peker - Pasadena CA
William L. Johnson - Pasadena CA
Robert Schafer - Worthington OH
David M. Scruggs - Oceanside CA

Assignee:

Amorphous Alloys Corp. - Laguna Niguel CA

International Classification:

C22C 900

US Classification:

428457

Abstract:

A diamond-containing metal-matrix composite material is formed by dispersing pieces of diamond throughout a melt of a bulk-solidifying amorphous metal and solidifying the mixture. The mixture may then be remelted and resolidified at a rate sufficiently high that the metal matrix retains an amorphous structure upon cooling. The metal preferably has a composition of about that of a eutectic composition, and most preferably has a composition, in atomic percent, of from about 45 to about 67 percent total of zirconium plus titanium, from about 10 to about 35 percent beryllium, and from about 10 to about 98 percent total of copper plus nickel. The diamond is preferably low-grade or artificial diamond.