# US 2014/0190593 A1 · Bulk nickel-silicon-boron glasses bearing iron

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- Number: US 2014/0190593 A1
- Document ID: US20140190593A1
- Status: Published application
- Kind: A1
- Application number: 14/149,035
- Filed: 2014-01-07
- Published: 2014-07-10
- Earliest claimed: 2013-01-07
- Assignees: Glassimetal Technology, Inc.
- Applicants: Glassimetal Technology, Inc.
- Inventors: Jong Hyun Na; Michael Floyd; Marios D. Demetriou; William L. Johnson; Glenn Garrett; Maximilien Launey
- Web page: https://patentgrep.com/patent/US20140190593A1

## CPC

- C22F 1/10: of nickel or cobalt or alloys based thereon
- C22C 1/11: Making amorphous alloys
- C22C 19/03: based on nickel
- C22C 19/058: {without Mo and W}
- C22C 33/003: {making amorphous alloys}
- C22C 45/02: with iron as the major constituent
- C22C 45/04: with nickel or cobalt as the major constituent
- C22F: CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS (surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by this subclass, C23F17/00)
- C22C: ALLOYS (treatment of alloys C21D, C22F)

## Abstract

Ni—Fe—Si—B and Ni—Fe—Si—B—P metallic glass forming alloys and metallic glasses are provided. Metallic glass rods with diameters of at least one, up to three millimeters, or more can be formed from the disclosed alloys. The disclosed metallic glasses demonstrate high yield strength combined with high corrosion resistance, while for a relatively high Fe contents the metallic glasses are ferromagnetic.

## Claims

### Claim 1

An alloy represented by the formula Ni(100-a-b-c)FeaSibBc, wherein the atomic percent a is between 5 and 50, the atomic percent b is between 10 and 14, the atomic percent c is between 9 and 13, and wherein the alloy is capable of forming a metallic glass rod having a diameter of at least 1 mm.

### Claim 2 (depends on 1)

The alloy of claim 1, wherein the Fe atomic percent a is between 15 and 50, and the diameter of the metallic glass rod that can be formed is at least 1 mm.

### Claim 3 (depends on 1)

The alloy of claim 1, wherein the Fe atomic percent a is between 25 and 40, and the diameter of the metallic glass rod that can be formed is at least 2 mm.

### Claim 4 (depends on 1)

The alloy of claim 1, wherein a combined atomic percent of Si and B is between 21 and 24.

### Claim 5 (depends on 1)

The alloy of claim 1, wherein up to 3 atomic % of Ni or Fe is substituted by Cr.

### Claim 6 (depends on 1)

The alloy of claim 1, wherein up to 1.5 atomic % of Fe or Ni is substituted by Co, Mn, W, Mo, Ru, Re, Cu, Pd, Pt, Nb, V, Ta, or a combination thereof.

### Claim 7 (depends on 1)

A metallic glass comprising the alloy of claim 1.

### Claim 8

An alloy comprising composition selected from a group consisting of Ni52Fe25Si12B11, Ni47Fe30Si12B11, Ni44.5Fe32.5Si12B11, Ni42Fe35Si12B11, Ni39.5Fe37.5Si12B11, Ni53Fe25Si7B10P4, Ni53Fe25Si8B9P5, Ni53Fe25Si9B9P4, Ni53Fe25Si7B9P6, Ni53Fe25Si7B10P5, Ni53.68Fe25.32Si7.64B8.59P4.77, Ni52.32Fe24.68Si8.36B9.41P5.23, Ni54Fe24Si8B9P5, and Ni52Fe26Si8B9P5.

### Claim 9

An alloy represented by the formula Ni(100-a-b-c)FeaSibBcPd, wherein the atomic percent a is between 5 and 50, the atomic percent b is between 7 and 10, the atomic percent c is between 7 and 10, and the atomic percent d is between 0.5 and 8, and wherein the alloy is capable of forming a metallic glass rod having a diameter of at least 1 mm.

### Claim 10 (depends on 9)

The alloy of claim 9, wherein a is between 20 and 45, and the diameter of the metallic glass rod that can be formed when processed by water quenching the high temperature melt in a quartz tube having wall thickness of 0.5 mm is at least 2 mm.

### Claim 11 (depends on 9)

The alloy of claim 9, wherein a combined atomic percent of Si and B is between 21 and 23.

### Claim 12 (depends on 9)

The alloy of claim 9, wherein up to 3 atomic % of Ni or Fe is substituted by Cr.

### Claim 13 (depends on 9)

The alloy of claim 9, wherein up to 1.5 atomic % of Fe or Ni is substituted by Co, Mn, W, Mo, Ru, Re, Cu, Pd, Pt, Nb, V, Ta, or a combination thereof.

### Claim 14 (depends on 9)

A metallic glass comprising the alloy of claim 9.

### Claim 15 (depends on 14)

A method of producing the metallic glass of claim 14 comprising:
melting the alloy into a molten state; and
quenching the melt at a cooling rate sufficiently rapid to prevent crystallization of the alloy.

### Claim 16 (depends on 15)

The method of claim 15, further comprising fluxing the melt with a reducing agent prior to quenching.

### Claim 17 (depends on 16)

The method of claim 16, wherein the reducing agent is boron oxide.

### Claim 18 (depends on 15)

The method of claim 15, the step of melting the alloy comprises melting the alloy in a crucible, the crucible made of fused silica, crystalline silica, a ceramic, alumina, zirconia, graphite, or a water-cooled hearth made of copper or silver.

### Claim 19 (depends on 15)

The method of claim 15, the step of quenching the molten alloy comprises quenching the crucible containing the molten alloy in a bath of room temperature water, iced water, or oil.

### Claim 20 (depends on 15)

The method of claim 15, the step of quenching the molten alloy comprises injecting or pouring the molten alloy into a metal mold.