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Patent US4710236A successfully refreshed from Google Patents.
US4710236A
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Method for the preparation of a metallic body from an amorphous alloy
Assignee: Siemens AG
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Filing: 1986-04-07
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Granted: 1987-12-01
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Expires: 2006-04-07
Abstract
Abstract An amorphous metal body is produced from an intermediate product formed by compacting at least two usually crystalline components of the alloy in powder form. The alloying components in the intermediate product extend in at least one dimension at most 1 um. The intermediate product is converted into the amorphous metallic body by means of a diffusion reaction at a predetermined elevated temperature. In order to produce bodies of larger size on a large technical scale, a mixture powder comprising particles is produced from the alloying components in powder form by a milling process which is terminated at a predetermined time in such a manner that the particles produced by milling have at least a predominantly layer-like structure of the alloying components. This mixture powder is then compacted into the intermediate product with the desired shape and dimensions. The intermediate product is optionally deformed.
Inventors
- 👤 Ludwig Schultz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:15
CPC Classifications
C; C22; C22C; C22C45/00; B; B22; B22F; B22F1/00; B22F1/14; B22F1/142; B22F3/00; B22F3/006; B22F3/007; B22F9/00; B22F9/02; B22F9/04; B22F2009/041
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
164 words
In a method for manufacturing an amorphous metal alloy body including the steps of: forming an intermediate product of at least a first alloy component and a second alloy component in powder form wherein each alloy component in the intermediate product has at least one dimension of at most about 1 μm in extent said forming step including a compacting step; and converting the intermediate product into a body having an amorphous metal alloy structure by a diffusion reaction at a predetermined elevated temperature; the improvement comprising: producing a mixture powder by milling a mixture of at least said first alloy component powder and said second alloy component powder and terminating the milling at a time so that the particles of the produced mixture powder are formed of predominately layer-like structures of said at least said first and second alloy components; and then effecting said compacting step by compacting and deforming the produced mixture powder to form the intermediate product having a predetermined shape.
Claim 2
Dependent Claim
164 words
In a method for manufacturing an amorphous metal alloy body including the steps of: forming an intermediate product of at least a first alloy component and a second alloy component in powder form wherein each alloy component in the intermediate product has at least one dimension of at most about 1 μm in extent said forming step including a compacting step; and converting the intermediate product into a body having an amorphous metal alloy structure by a diffusion reaction at a predetermined elevated temperature; the improvement comprising: producing a mixture powder by milling a mixture of at least said first alloy component powder and said second alloy component powder and terminating the milling at a time so that the particles of the produced mixture powder are formed of predominately layer-like structures of said at least said first and second alloy components; and then effecting said compacting step by compacting and deforming the produced mixture powder to form the intermediate product having a predetermined shape.
Claim 3
Dependent Claim
17 words
A method according to claim 1 wherein said intermediate product is produced by a further deforming step.
Claim 4
Dependent Claim
25 words
A method according to claim 1 wherein the termination time of milling is determined by sectional examination of the particles of the produced mixture powder.
Claim 5
Dependent Claim
16 words
A method according to claim 1 wherein the milling takes place in a protective gas atmosphere.
Claim 6
Dependent Claim
17 words
A method according to claim 1 wherein the milling takes place at least at one predetermined temperature.
Claim 7
Dependent Claim
24 words
A method according to claim 1 wherein said predominantly layer-like structures each have a thickness of from about 0.01 μm to about 0.9 μm.
Claim 8
Dependent Claim
24 words
A method according to claim 6 wherein said predominantly layer-like structures each have a thickness of from about 0.05 μm to about 0.5 μm.
Claim 9
Dependent Claim
24 words
A method according to claim 6 wherein said particles of said produced mixture powder have diameters from about 10 μm to about 200 μm.
Claim 10
Dependent Claim
24 words
A method according to claim 7 wherein said particles of said produced mixture powder have diameters from about 20 μm to about 100 μm.
Claim 11
Dependent Claim
19 words
A method according to claim 1 wherein said produced mixture powder is deformed into said intermediate product by hammering.
Claim 12
Dependent Claim
19 words
A method according to claim 1 herein said produced mixture powder is deformed into said intermediate product by extrusion.
Claim 13
Dependent Claim
17 words
A method according to claim 1 wherein said diffusion reaction is performed after the completion of compacting.
Claim 14
Dependent Claim
20 words
A method according to claim 2 wherein said diffusion reaction is performed after the completion of deforming the intermediate product.
Claim 15
Dependent Claim
15 words
A method according to claim 1 wherein said diffusion reaction is performed simultaneously with compacting.
Claim 16
Dependent Claim
15 words
A method according to claim 2 wherein said diffusion reaction is performed simultaneously with deformation.
Claim 17
Dependent Claim
25 words
A method according to claim 1 wherein the amorphous metal alloy structure of the body is converted to a microcrystalline structure by an annealing treatment.
Claim 18
Dependent Claim
24 words
A method according to claim 2 wherein the amorphous metal alloy structure of the body converted to a microcrystalline structure by an annealing treatment.
Claim 19
Dependent Claim
18 words
A method according to claim 1 wherein said first and said second alloy components are both crystalline components.
Claim 20
Dependent Claim
24 words
A method according to claim 1 wherein at least one alloy component is a metal and at least another alloy component is a metalloid.
Claim 21
Dependent Claim
15 words
A method according to claim 19 wherein said metalloid alloy component is amorphous in structure.
Claim 22
Dependent Claim
20 words
A method according to claim 1 wherein at least one alloy component comprises an alloy of more than one element.
Claim 23
Dependent Claim
20 words
A method according to claim 1 wherein at least one alloy component comprises a compound of more than one element.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1990-11-30 | 1991-06-01 | 1991-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-30 | 1995-06-01 | 1995-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-30 | 1999-06-01 | 1999-12-01 | $7700.00 | Window Closed / Lapsed |