US4564395A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing amorphous metals
Assignee: The University of Osaka
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Filing: 1984-03-02
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Granted: 1986-01-14
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Expires: 2004-03-02
Abstract
Abstract An amorphous metal having a desired irregularity is formed by irradiating a metal with an electron beam having an energy large enough to damage the metal thereby introducing a lattice defect into the metal and controlling the concentration of the introduced lattice defect.
Inventors
- 👤 Hirotaro Mori
- 👤 Hiroshi Fujita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:29
CPC Classifications
C; C21; C21D; C21D10/00; C22; C22C; C22C45/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A method for converting at least the surface of an intermetallic compound selected from the group consisting of NiTi, Fe 2 Ti, Zr 2 Al, CuZr, Cu 3 Ti 2 , Co 2 Ti, CU 10 Zr 7 , Zr 2 Ni, Nb 7 Ni 6 , NoNi, Mn 2 Ti, CuTi, V 3 Si and iron-zirconium into an amorphous metal comprising the steps of: (a) irradiating said intermetallic compound with an electron beam having a flux density not exceeding approximately 1.3×10 24 e/m 2 ·sec, the energy of said electron beam being sufficient to introduce a lattice defect into said intermetallic compound; (b) heating said intermetallic compound to a temperature not exceeding approximately 290° K.; and (c) maintaining said electron beam irradiation for at least approximately 60 seconds until at least the surface of said intermetallic compound has been converted into an amorphous metal.
Claim 2
Independent Claim
145 words
A method for converting at least the surface of an intermetallic compound selected from the group consisting of NiTi, Fe 2 Ti, Zr 2 Al, CuZr, Cu 3 Ti 2 , Co 2 Ti, CU 10 Zr 7 , Zr 2 Ni, Nb 7 Ni 6 , NoNi, Mn 2 Ti, CuTi, V 3 Si and iron-zirconium into an amorphous metal comprising the steps of: (a) irradiating said intermetallic compound with an electron beam having a flux density not exceeding approximately 1.3×10 24 e/m 2 ·sec, the energy of said electron beam being sufficient to introduce a lattice defect into said intermetallic compound; (b) heating said intermetallic compound to a temperature not exceeding approximately 290° K.; and (c) maintaining said electron beam irradiation for at least approximately 60 seconds until at least the surface of said intermetallic compound has been converted into an amorphous metal.
References Cited (Backward Citations)
US3926682A
Cited
US4122240A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-01-13 | 1989-07-15 | 1990-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-13 | 1993-07-15 | 1994-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-13 | 1997-07-15 | 1998-01-14 | $7700.00 | Window Closed / Lapsed |