Glassimetal Technology Inc.

Apple Inc.

California Institute of Technology

Glassimental Technology, Inc.

Jong Hyun Na

William L Johnson

Marios D Demetriou

Glenn Garrett

Maximilien E Launey

Michael Floyd

Danielle Duggins

Kyung-Hee Han

Oscar Abarca

David S Lee

Chase Crewdson

Joseph P Schramm

Georg Kaltenboeck

Maximilien Launey

Ni—Cr—Nb—P—B alloys optionally bearing Si and metallic glasses formed from said alloys are disclosed, where the alloys have a critical rod diameter of at least 5 mm and the metallic glasses demonstrate a notch toughness of at least 96 MPa m.

Bulk nickel-niobium-phosphorus-boron glasses bearing low fractions of chromium and exhibiting high toughness

Nickel based alloys capable of forming bulk metallic glass are provided. The alloys include Ni&#x2014;Cr&#x2014;Si&#x2014;B compositions, with additions of P and Mo, and are capable of forming a metallic glass rod having a diameter of at least 1 mm. In one example of the present disclosure, the Ni&#x2014;Cr&#x2014;Mo&#x2014;Si&#x2014;B&#x2014;P composition includes about 4.5 to 5 atomic percent of Cr, about 0.5 to 1 atomic percent of Mo, about 5.75 atomic percent of Si, about 11.75 atomic percent of B, about 5 atomic percent of P, and the balance is Ni, and wherein the critical metallic glass rod diameter is between 2.5 and 3 mm and the notch toughness between 55 and 65 MPa m.

Bulk nickel-silicon-boron glasses bearing chromium

The disclosure provides Fe&#x2014;Cr&#x2014;Ni&#x2014;Mo&#x2014;P&#x2014;C&#x2014;B metallic glass-forming alloys and metallic glasses that have a high glass forming ability along with a high thermal stability of the supercooled liquid against crystallization.

Tough iron-based glasses with high glass forming ability and high thermal stability

The disclosure provides Zr&#x2014;Ti&#x2014;Cu&#x2014;Ni&#x2014;Al metallic glass-forming alloys and metallic glasses that have a high glass forming ability along with a high thermal stability of the supercooled liquid against crystallization.

Zirconium-titanium-copper-nickel-aluminum glasses with high glass forming ability and high thermal stability

The present disclosure provides Au-based alloys comprising Si capable of forming metallic glass matrix composites, and metallic glass matrix composites formed thereof. The Au-based metallic glass matrix composites according to the present disclosure comprise a primary-Au crystalline phase and a metallic glass phase and are free of any other phase. In certain embodiments, the metallic glass matrix composites according to the present disclosure satisfy the 18-Karat Gold Alloy Hallmark.

Gold-based metallic glass matrix composites

Pd&#x2014;Cu&#x2014;P metallic glass-forming alloy compositions and metallic glasses comprising at least one of Ag, Au, and Fe are provided, wherein the alloys demonstrate improved glass forming ability, as compared to Pd&#x2014;Cu&#x2014;P alloys free of Ag, Au, and Fe, and are capable of forming metallic glass rods with diameters in excess of 3 mm, and in some embodiments 26 mm or larger.

Bulk palladium-copper-phosphorus glasses bearing silver, gold, and iron

The disclosure is directed to Zr&#x2014;Co&#x2014;Ni&#x2014;Al alloys that optionally comprise Ti and are capable of forming metallic glasses having a combination of high glass forming ability and high reflectivity. Compositional regions in the Zr&#x2014;Co&#x2014;Ni&#x2014;Al and Zr&#x2014;Ti&#x2014;Co&#x2014;Ni&#x2014;Al alloys are disclosed where the metallic glass-forming alloys demonstrate a high glass forming ability while the metallic glasses formed from the alloys exhibit a high reflectivity. The metallic glass-forming alloys demonstrate a critical plate thickness of at least 2 mm, while the metallic glasses formed from the alloys demonstrate a CIELAB L* value of at least 78.

Zirconium-cobalt-nickel-aluminum glasses with high glass forming ability and high reflectivity

The disclosure is directed to Ni&#x2014;P&#x2014;Si alloys bearing Mn and optionally Cr, Mo, Nb, and Ta that are capable of forming a metallic glass, and more particularly demonstrate critical rod diameters for glass formation greater than 1 mm and as large as 5 mm or larger.

Bulk nickel-phosphorus-silicon glasses bearing manganese

The disclosure provides Pt&#x2014;P metallic glass-forming alloys and metallic glasses comprising at least two of Ni, Pd, Ag, and Au and optionally Si as well as potentially other elements, where the weight fraction of Pt is between 74 and 91 percent, and where the at least two of Ni, Pd, Ag, and Au contribute to increase the critical rod diameter of the alloy in relation to a Pt&#x2014;P alloy free of Ni, Pd, Ag, and Au or a Pt&#x2014;P alloy comprising only one of these elements. In embodiments where the PT850 hallmark is satisfied, alloys according to the disclosure are capable of forming metallic glass rods with diameters in excess of 3 mm, and in some embodiments 30 mm or larger.

Bulk platinum-phosphorus glasses bearing nickel, palladium, silver, and gold

Golf clubs formed from bulk-solidifying amorphous metals (i.e., metallic glasses) having high elastic modulus and fracture toughness, and to methods of forming the same are provided. Among other components, the golf club materials disclosed enable fabrication of flexural membranes or shells used in golf club heads (drivers, fairways, hybrids, irons, wedges and putters) exhibiting enhanced flexural or bending compliance together with the ability to deform plastically and avoid brittle fracture or catastrophic failure when overloaded under bending loads. Further, the high strength of the material and its density, comparable to that of steel, enables the redistribution of mass in the golf club while maintaining a desired overall target mass.

Golf club fabricated from bulk metallic glasses with high toughness and high stiffness

The disclosure provides Pt&#x2014;Cu&#x2014;P glass-forming alloys bearing at least one of B, Ag, and Au, where each of B, Ag, and Au can contribute to improve the glass forming ability of the alloy in relation to the alloy that is free of these elements. The alloys are capable of forming metallic glass rods with diameters in excess of 3 mm, and in some embodiments 50 mm or larger. The alloys and metallic glasses can satisfy platinum jewelry hallmarks PT750, PT800, PT850, and PT900.

Bulk platinum-copper-phosphorus glasses bearing boron, silver, and gold

A fluxing method is disclosed by which the melt of aluminum-contaminated Ni-based glass-forming alloys is fluxed using a fluxing agent based on boron and oxygen in order to reverse the adverse effects of aluminum impurities on the glass-forming ability and toughness.

Fluxing method to reverse the adverse effects of aluminum impurities in nickel-based glass-forming alloys

Ni&#x2014;Cr&#x2014;Nb&#x2014;P&#x2014;B alloys and metallic glasses are provided, where Nb and B are varied such as to achieve alloys with good glass forming ability that form metallic glasses which may exhibit unexpectedly high strength and/or high thermal stability of the supercooled liquid. Specifically, the alloys of the current disclosure are capable of forming metallic glasses and have critical rod diameters of at least 3 mm, while the metallic glasses exhibit yield strength greater than 2550 MPa and stability of the supercooled liquid of at least 45&#xb0; C.

Bulk nickel-chromium-phosphorus glasses bearing niobium and boron exhibiting high strength and/or high thermal stability of the supercooled liquid

Ni&#x2014;Fe, Ni&#x2014;Co, and Ni&#x2014;Cu-based bulk metallic glass forming alloys are provided. The alloys have critical rod diameters of at least 1 mm and in some instances at least 11 mm. The alloys have composition according to NiXCrNbPB, wherein X is at least one of Fe, Co, and Cu, the atomic percent X (Fe and/or Co and/or Cu) ranges from 0.5 to 30, the atomic percent of Cr ranges from 2 to 15, the atomic percent of Nb ranges from 1 to 5, the atomic percent of P ranges from 14 to 19, the atomic percent of B ranges from 1 to 5, and the balance is Ni.

Bulk nickel-iron-based, nickel-cobalt-based and nickel-copper based glasses bearing chromium, niobium, phosphorus and boron

Ni-based Cr- and P-bearing alloys that can from centimeter-thick amorphous articles are provided. Within the family of alloys, millimeter-thick bulk-glassy articles can undergo macroscopic plastic bending under load without fracturing catastrophically.

Growing community of inventors

Pasadena, CA, United States of America

Jong Hyun Na