US4537624A
Expired / Lapsed
US
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Amorphous metal alloy powders and synthesis of same by solid state decomposition reactions
Assignee: Standard Oil Co
•
Filing: 1984-03-05
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Granted: 1985-08-27
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Expires: 2004-03-05
Abstract
Abstract Amorphous metal alloy powders are synthesized by solid state decomposition reactions. At least one precursor compound is thermally decomposed at a temperature below the crystallization temperature of the amorphous metal alloy to be formed. The decomposition product comprises an intimate mixture of the elements of the alloy and, after heat-treating if necessary, exhibits amorphous characteristics.
Inventors
- 👤 Michael A. Tenhover
- 👤 Richard S. Henderson
- 👤 Robert K. Grasselli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:00
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/006; B22F3/007; B22F9/00; B22F9/002; B22F9/004; B22F9/16; B22F9/30; Y; Y10; Y10S; Y10S505/00; Y10S505/80; Y10S505/801; Y10S505/804; Y10S505/807
Claims Analysis
Total Claims: 49
Claim 1
Independent Claim
68 words
A process for the synthesis of a substantially amorphous metal alloy comprising thermally decomposing at least one precursor metal-bearing compound at a temperature below the crystallization temperature of the amorphous metal alloy to be formed, the at least one precursor metal-bearing compound having a decomposition temperature below the crystallization temperature of the amorphous alloy to be formed and containing the metals which comprise the substantially amorphous metal alloy.
Claim 2
Dependent Claim
68 words
A process for the synthesis of a substantially amorphous metal alloy comprising thermally decomposing at least one precursor metal-bearing compound at a temperature below the crystallization temperature of the amorphous metal alloy to be formed, the at least one precursor metal-bearing compound having a decomposition temperature below the crystallization temperature of the amorphous alloy to be formed and containing the metals which comprise the substantially amorphous metal alloy.
Claim 3
Dependent Claim
18 words
The process in accordance with claim 1 wherein said substantially amorphous metal alloy is obtained as a power.
Claim 4
Dependent Claim
17 words
The process in accordance with claim 2 wherein said powder is further processed into a solid shape.
Claim 5
Dependent Claim
19 words
The process in accordance with claim 1 wherein the amorphous metal alloy formed is at least 50 percent amorphous.
Claim 6
Dependent Claim
19 words
The process in accordance with claim 1 wherein the amorphous metal alloy formed is at least 80 percent amorphous.
Claim 7
Dependent Claim
18 words
The process in accordance with claim 1 wherein the amorphous metal alloy formed is about 100 percent amorphous.
Claim 8
Dependent Claim
19 words
The process in accordance with claim 1 wherein said process synthesizes an amorphous metal alloy composition including nonmetallic elements.
Claim 9
Dependent Claim
19 words
The process in accordance with claim 7 wherein the thermal decomposition occurs under an atmosphere comprising said nonmetallic elements.
Claim 10
Dependent Claim
32 words
The process in accordance with claim 1 wherein the said thermal decomposition occurs at a temperature at least 25° C. below the crystallization temperature of the amorphous metal alloy to be formed.
Claim 11
Dependent Claim
31 words
The process in accordance with claim 1 wherein said thermal decomposition occurs at a temperature at least 100° C. below the crystallization temperature of the amorphous metal alloy to be formed.
Claim 12
Dependent Claim
20 words
The process in accordance with claim 1 wherein said decomposition temperature is between about 25° C. and about 500° C.
Claim 13
Dependent Claim
20 words
The process in accordance with claim 1 wherein said decomposition temperature is between about 250° C. and about 400° C.
Claim 14
Dependent Claim
16 words
The process in accordance with claim 1 wherein said thermal decomposition occurs under an inert atmosphere.
Claim 15
Dependent Claim
15 words
The process in accordance with claim 1 wherein said decomposition occurs under a reactive atmosphere.
Claim 16
Dependent Claim
19 words
The process in accordance with claim 1 wherein said at least one precursor metal-bearing compound is an organometallic compound.
Claim 17
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 1000 Angstroms.
Claim 18
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 19
Dependent Claim
83 words
A process for the synthesis of an enhanced substantially amorphous metal alloy comprising thermally decomposing at least one precursor metal-bearing compound in the presence of an initial substantially amorphous metal alloy at a temperature below the crystallization temperatures of the initial substantially amorphous metal alloy and the enhanced substantially amorphous metal alloy to be formed, the at least one precursor metal-bearing compound containing additional elements to be incorporated into the initial metal alloy so as to form an enhanced substantially amorphous metal alloy.
Claim 20
Dependent Claim
83 words
A process for the synthesis of an enhanced substantially amorphous metal alloy comprising thermally decomposing at least one precursor metal-bearing compound in the presence of an initial substantially amorphous metal alloy at a temperature below the crystallization temperatures of the initial substantially amorphous metal alloy and the enhanced substantially amorphous metal alloy to be formed, the at least one precursor metal-bearing compound containing additional elements to be incorporated into the initial metal alloy so as to form an enhanced substantially amorphous metal alloy.
Claim 21
Dependent Claim
87 words
A process for the synthesis of a substantially amorphous metal alloy comprising the steps of: (a) decomposing at least one precursor metal-bearing compound at a temperature below the crystallization temperature of the amorphous metal alloy to be synthesized so as to form an intimate mixture of the components of the amorphous metal alloy to be synthesized, the at least one precursor metal-bearing compound containing the metals which comprise the substantially amorphous alloy; and (b) heat-treating the intimate mixture so as to form the substantially amorphous metal alloy.
Claim 22
Dependent Claim
87 words
A process for the synthesis of a substantially amorphous metal alloy comprising the steps of: (a) decomposing at least one precursor metal-bearing compound at a temperature below the crystallization temperature of the amorphous metal alloy to be synthesized so as to form an intimate mixture of the components of the amorphous metal alloy to be synthesized, the at least one precursor metal-bearing compound containing the metals which comprise the substantially amorphous alloy; and (b) heat-treating the intimate mixture so as to form the substantially amorphous metal alloy.
Claim 23
Dependent Claim
18 words
The process in accordance with claim 19 wherein said substantially amorphous metal alloy is synthesized as a powder.
Claim 24
Dependent Claim
31 words
The process in accordance with claim 19 wherein prior to step (b) said intimate mixture of the components of the amorphous metal alloy to be synthesized is pressed into a shape.
Claim 25
Dependent Claim
22 words
The process in accordance with claim 19 wherein said substantially amorphous metal alloy of step (b) is formed into a solid shape.
Claim 26
Dependent Claim
20 words
The process in accordance with claim 17 wherein said formed substantially amorphous metal alloy is at least 50 percent amorphous.
Claim 27
Dependent Claim
20 words
The process in accordance with claim 19 wherein said formed substantially amorphous metal alloy is at least 80 percent amorphous.
Claim 28
Dependent Claim
19 words
The process in accordance with claim 19 wherein said formed substantially amorphous metal alloy is about 100 percent amorphous.
Claim 29
Dependent Claim
19 words
The process in accordance with claim 19 wherein said process synthesizes an amorphous metal alloy composition including nonmetallic elements.
Claim 30
Dependent Claim
21 words
The process in accordance with claim 26 wherein heat-treating of the intimate mixture occurs under an atmosphere comprising said nonmetallic elements.
Claim 31
Dependent Claim
36 words
The process in accordance with claim 19 wherein said at least one precursor metal bearing compound is decomposed at a temperature at least 25° below the crystallization temperature of the amorphous metal alloy to be synthesized.
Claim 32
Dependent Claim
36 words
The process in accordance with claim 19 wherein said at least one precursor metal-bearing compound is decomposed at a temperature at least 100° C. below the crystallization temperature of the amorphous metal alloy to be synthesized.
Claim 33
Dependent Claim
29 words
The process in accordance with claim 19 wherein said at least one precursor metal-bearing compound is decomposed at a temperature of between about 25° C. and about 500° C.
Claim 34
Dependent Claim
29 words
The process in accordance with claim 19 wherein said at least one precursor metal-bearing compound is decomposed at a temperature of between about 250° C. and about 400° C.
Claim 35
Dependent Claim
20 words
The process in accordance with claim 19 wherein said heat-treating of the intimate mixture is performed under an inert atmosphere.
Claim 36
Dependent Claim
20 words
The process in accordance with claim 9 wherein said heat-treating of the intimate mixture is performed under a reactive atmosphere.
Claim 37
Dependent Claim
18 words
The process in accordance with claim 19 wherein at least one precursor metal-bearing compound is an organometallic compound.
Claim 38
Dependent Claim
27 words
The process in accordance with claim 19 wherein said intimate mixture comprises particles having a maximum particle size of from about 10 Angstroms to about 1000 Angstroms.
Claim 39
Dependent Claim
26 words
The process in accordance with claim 19 wherein said intimate mixture comprises particles having maximum particles size of from about 10 Angstroms to about 500 Angstroms.
Claim 40
Dependent Claim
85 words
A process for the synthesis of an enhanced substantially amorphous metal alloy comprising the steps of: (a) decomposing at least one precursor metal-bearing compound in the presence of an initial substantially amorphous metal alloy at a temperature below the crystallization temperature of the enhanced substantially amorphous metal alloy to be synthesized so as to form an intimate mixture of the components of the enhanced amorphous metal alloy to be synthesized; and (b) heat-treating the mixture so as to form an enhanced substantially amorphous metal alloy.
Claim 41
Dependent Claim
85 words
A process for the synthesis of an enhanced substantially amorphous metal alloy comprising the steps of: (a) decomposing at least one precursor metal-bearing compound in the presence of an initial substantially amorphous metal alloy at a temperature below the crystallization temperature of the enhanced substantially amorphous metal alloy to be synthesized so as to form an intimate mixture of the components of the enhanced amorphous metal alloy to be synthesized; and (b) heat-treating the mixture so as to form an enhanced substantially amorphous metal alloy.
Claim 42
Dependent Claim
59 words
A substantially amorphous metal alloy powder having a maximum particle size of from about 10 Angstroms to about 1,000 Angstroms synthesized by thermally decomposing at least one precursor metal-bearing compound at a temperature below the crystallization temperature of the amorphous metal alloy, the at least one precursor metal-bearing compound containing the metals that comprise the substantially amorphous metal alloy.
Claim 43
Dependent Claim
59 words
A substantially amorphous metal alloy powder having a maximum particle size of from about 10 Angstroms to about 1,000 Angstroms synthesized by thermally decomposing at least one precursor metal-bearing compound at a temperature below the crystallization temperature of the amorphous metal alloy, the at least one precursor metal-bearing compound containing the metals that comprise the substantially amorphous metal alloy.
Claim 44
Dependent Claim
23 words
The substantially amorphous metal alloy powder in accordance with claim 38 wherein said amorphous metal alloy powder is at least 50 percent amorphous.
Claim 45
Dependent Claim
23 words
The substantially amorphous metal alloy powder in accordance with claim 38 wherein said amorphous metal alloy powder is at least 80 percent amorphous.
Claim 46
Dependent Claim
22 words
The substantially amorphous metal alloy powder in accordance with claim 38 wherein said amorphous metal alloy powder is about 100 percent amorphous.
Claim 47
Dependent Claim
20 words
The substantially amorphous metal alloy powder in accordance with claim 38 wherein the amorphous metal alloy composition includes nonmetallic elements.
Claim 48
Dependent Claim
34 words
The substantially amorphous metal alloy powder in accordance with claim 38 wherein the amorphous metal alloy composition includes nonmetallic elements selected from the group comprising boron, carbon, nitrogen, silicon, phosphorus, arsenic, germanium and antimony.
Claim 49
Dependent Claim
28 words
The substantially amorphous metal alloy powder in accordance with claim 38 wherein said powder has a maximum particle size of from about 10 Angstroms to about 500 Angstroms.
References Cited (Backward Citations)
US4197146A
Cited
US4282034A
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 |