Patent US4537625A successfully refreshed from Google Patents.
US4537625A
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US
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Amorphous metal alloy powders and synthesis of same by solid state chemical reduction reactions
Assignee: Standard Oil Co
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Filing: 1984-03-09
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Granted: 1985-08-27
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Expires: 2004-03-09
Abstract
Abstract Amorphous metal alloy powders may be synthesized by solid state reactions. Precursor components that include the elements of the amorphous alloy are chemically reduced to yield an intimate mixture. The resultant intimate mixture, as obtained or after heat-treating, exhibits amorphous characteristics. These powders are suitable for forming solid amorphous shapes.
Inventors
- 👤 Michael A. Tenhover
- 👤 Richard S. Henderson
- 👤 Joseph R. Fox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:47
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/006; B22F3/007; B22F9/00; B22F9/002; B22F9/004; B22F9/16; B22F9/18; B22F9/24; B22F2998/00; Y; Y10; Y10S; Y10S505/00; Y10S505/80; Y10S505/801; Y10S505/804; Y10S505/807
Claims Analysis
Total Claims: 44
Claim 1
Independent Claim
40 words
A process for the synthesis of a substantially amorphous metal alloy powder comprising disposing at least one metal-bearing compound in a liquid medium and reducing the at least one metal-bearing compound so as to form a substantially amorphous metal powder.
Claim 2
Dependent Claim
40 words
A process for the synthesis of a substantially amorphous metal alloy powder comprising disposing at least one metal-bearing compound in a liquid medium and reducing the at least one metal-bearing compound so as to form a substantially amorphous metal powder.
Claim 3
Dependent Claim
17 words
The process in accordance with claim 1 wherein said powder is further processed into a solid shape.
Claim 4
Dependent Claim
19 words
A process in accordance with claim 1 wherein the amorphous metal alloy formed is at least 50 percent amorphous.
Claim 5
Dependent Claim
19 words
A process in accordance with claim 1 wherein the amorphous metal alloy formed is at least 80 percent amorphous.
Claim 6
Dependent Claim
18 words
The process in accordance with claim 1 wherein the amorphous metal alloy formed is about 100 percent amorphous.
Claim 7
Dependent Claim
19 words
The process in accordance with claim 1 wherein said process synthesizes an amorphous metal alloy composition including nonmetallic elements.
Claim 8
Dependent Claim
21 words
The process in accordance with claim 6 wherein said nonmetallic elements include boron, carbon, nitrogen, silicon, phosphorus, arsenic, germanium and antimony.
Claim 9
Dependent Claim
13 words
The process in accordance with claim 1 wherein said liquid medium is aqueous.
Claim 10
Dependent Claim
24 words
The process in accordance with claim 1 wherein said at least one metal-bearing compound is reduced in the presence of a chemical reducing agent.
Claim 11
Dependent Claim
30 words
The process in accordance with claim 9 wherein said chemical reducing agent is a compound selected from the group comprising hydrogen, hydrazine, hydroxyl amines, alkali borohydrides, alkali-hydrogen-phosphites and alkali hypophosphites.
Claim 12
Dependent Claim
15 words
The process in accordance with claim 9 wherein said chemical reducing agent is sodium borohydride.
Claim 13
Dependent Claim
31 words
The process in accordance with claim 1 wherein prior to reducing said at least one metal-bearing compound said liquid medium is degassed with nitrogen, and inert gas or a reducing gas.
Claim 14
Dependent Claim
27 words
The process in accordance with claim 1 wherein said substantially amorphous metal alloy has a maximum particle size of from about 10 Angstroms to about 1,000 Angstroms.
Claim 15
Dependent Claim
27 words
The process in accordance with claim 1 wherein said substantially amorphous metal alloy has a maximum particle size of from about 10 Angstroms to about 500 Angstroms.
Claim 16
Dependent Claim
67 words
A process for the synthesis of a substantially amorphous metal alloy comprising the steps of: (a) disposing at least one metal-bearing compound in a liquid medium; (b) reducing said at least one metal-bearing compound so as to obtain an intimate mixture of the component of the amorphous metal alloy to be synthesized; and (c) heat-treating said intimate mixture so as to form the substantially amorphous metal alloy.
Claim 17
Dependent Claim
67 words
A process for the synthesis of a substantially amorphous metal alloy comprising the steps of: (a) disposing at least one metal-bearing compound in a liquid medium; (b) reducing said at least one metal-bearing compound so as to obtain an intimate mixture of the component of the amorphous metal alloy to be synthesized; and (c) heat-treating said intimate mixture so as to form the substantially amorphous metal alloy.
Claim 18
Dependent Claim
18 words
The process in accordance with claim 15 wherein said substantially amorphous metal alloy is synthesized as a powder.
Claim 19
Dependent Claim
31 words
The process in accordance with claim 15 wherein prior to step (c) said intimate mixture of the components of the amorphous metal alloy to be synthesized is pressed into a shape.
Claim 20
Dependent Claim
22 words
The process in accordance with claim 15 wherein said substantially amorphous metal alloy of step (c) is formed into a solid shape.
Claim 21
Dependent Claim
19 words
The process in accordance with claim 15 wherein said substantially amorphous metal alloy is at least 50 percent amorphous.
Claim 22
Dependent Claim
19 words
The process in accordance with claim 15 wherein said substantially amorphous metal alloy is at least 80 percent amorphous.
Claim 23
Dependent Claim
18 words
The process in accordance with claim 15 wherein said substantially amorphous metal alloy is about 100 percent amorphous.
Claim 24
Dependent Claim
19 words
The process in accordance with claim 15 wherein said process synthesizes an amorphous metal alloy composition including nonmetallic elements.
Claim 25
Dependent Claim
21 words
The process in accordance with claim 22 wherein said nonmetallic elements include boron, carbon, nitrogen, silicon, phosphorus, arsenic, germanium and antimony.
Claim 26
Dependent Claim
13 words
The process in accordance with claim 15 wherein said liquid medium is aqueous.
Claim 27
Dependent Claim
23 words
The process in accordance with claim 15 wherein said reducing of the at least one metal-bearing compound occurs with a chemical reducing agent.
Claim 28
Dependent Claim
23 words
The process in accordance with claim 25 wherein said chemical reducing agent is selected from the group comprising hydrogen, hydrazine and sodium borohydride.
Claim 29
Dependent Claim
15 words
The process in accordance with claim 25 wherein said chemical reducing agent is sodium borohydride.
Claim 30
Dependent Claim
31 words
The process in accordance with claim 15 wherein prior to reducing the at least one metal-bearing compound said liquid medium is degased with nitrogen, an inert gas or a reducing gas.
Claim 31
Dependent Claim
17 words
The process in accordance with claim 15 wherein said intimate mixture is maintained in an oxygen-free atmosphere.
Claim 32
Dependent Claim
16 words
The process in accordance with claim 15 wherein said intimate mixture is heat-treated in a vacuum.
Claim 33
Dependent Claim
26 words
The process in accordance with claim 15 wherein said heat-treating is performed at a temperature below the crystallization temperature of the amorphous alloy to be formed.
Claim 34
Dependent Claim
27 words
The process in accordance with claim 15 wherein said substantially amorphous metal alloy has a maximum particle size of from about 10 Angstroms to about 1,000 Angstroms.
Claim 35
Dependent Claim
27 words
The process in accordance with claim 1 wherein said substantially amorphous metal alloy has a maximum particle size of from about 10 Angstroms to about 500 Angstroms.
Claim 36
Dependent Claim
47 words
A substantially amorphous metal alloy powder synthesized by disposing at least one metal-bearing compound in a liquid medium, reducing the at least one metal-bearing compound so as to form an intimate mixture of the alloy components, and heat-treating said intimate mixture to form the amorphous metal alloy.
Claim 37
Dependent Claim
47 words
A substantially amorphous metal alloy powder synthesized by disposing at least one metal-bearing compound in a liquid medium, reducing the at least one metal-bearing compound so as to form an intimate mixture of the alloy components, and heat-treating said intimate mixture to form the amorphous metal alloy.
Claim 38
Dependent Claim
23 words
The substantially amorphous metal alloy powder in accordance with claim 34 wherein said amorphous metal alloy powder is at least 50 percent amorphous.
Claim 39
Dependent Claim
23 words
The substantially amorphous metal alloy powder in accordance with claim 34 wherein said amorphous metal alloy powder is at least 80 percent amorphous.
Claim 40
Dependent Claim
22 words
The substantially amorphous metal alloy powder in accordance with claim 34 wherein said amorphous metal alloy powder is about 100 percent amorphous.
Claim 41
Dependent Claim
20 words
The substantially amorphous metal alloy powder in accordance with claim 34 wherein the amorphous metal alloy composition includes nonmetallic elements.
Claim 42
Dependent Claim
34 words
The substantially amorphous metal alloy powder in accordance with claim 34 wherein the amorphous metal alloy composition includes nonmetallic elements selected from the group comprising boron, carbon, nitrogen, silicon, phosphorus, arsenic, germanium and antimony.
Claim 43
Dependent Claim
28 words
The substantially amorphous metal alloy powder in accordance with claim 34 wherein said powder has a maximum particle size of from about 10 Angstroms to about 1,000 Angstroms.
Claim 44
Dependent Claim
28 words
The substantially amorphous metal alloy powder in accordance with claim 34 wherein said powder has a maximum particle size of from about 10 Angstroms to about 500 Angstroms.
References Cited (Backward Citations)
US4067732A
Cited
US4318738A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-08-26 | 1989-02-25 | 1989-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-26 | 1993-02-25 | 1993-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-26 | 1997-02-25 | 1997-08-27 | $7700.00 | Window Closed / Lapsed |