US4298382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing large metallic glass bodies
Assignee: Corning Glass Works
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Filing: 1979-07-06
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Granted: 1981-11-03
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Expires: 1999-07-06
Abstract
Abstract This invention relates to the production of large shapes of metallic glasses from finely-dimensioned ribbons powders, flakes, wires, fibers, or filaments thereof. The inventive method contemplates placing the precursor finely-dimensioned articles of metallic glass into contact with one another and then hot pressing the mass at temperatures in the close vicinity of the glass transition temperature with applied forces of at least 1000 psi. One metallic glass, Fe 58 Cr 14 Cu 6 Si 6 B 6 , which is readily shaped into bulk bodies via the inventive method, exhibits excellent resistance to attack by sea water.
Inventors
- 👤 John L. Stempin
- 👤 Dale R. Wexell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:35
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/002; B22F9/008; B22F3/00; B22F3/006; B22F3/12; B22F3/14; C; C22; C22C; C22C45/00; C22C45/008
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
90 words
A method for preparing large shapes of metallic glasses from precursor finely-dimensioned bodies thereof which comprises: (a) placing said finely-dimensioned bodies in touching relationship with each other, and then (b) hot pressing said bodies in a non-oxidizing environment at temperatures ranging from about 25° C. below the glass transition temperature to about 15° C. above the transition temperature of said metallic glass under an applied force of at least 1000 psi for a period of time sufficient to cause the bodies to flow and fuse together into an integral unit.
Claim 2
Independent Claim
90 words
A method for preparing large shapes of metallic glasses from precursor finely-dimensioned bodies thereof which comprises: (a) placing said finely-dimensioned bodies in touching relationship with each other, and then (b) hot pressing said bodies in a non-oxidizing environment at temperatures ranging from about 25° C. below the glass transition temperature to about 15° C. above the transition temperature of said metallic glass under an applied force of at least 1000 psi for a period of time sufficient to cause the bodies to flow and fuse together into an integral unit.
Claim 3
Dependent Claim
17 words
A method according to claim 1 wherein said period of time ranges up to about one hour.
Claim 4
Dependent Claim
45 words
A method according to claim 1 wherein said temperatures range about 15° C. below the transition temperature of the glass to about 10° C. above the transition temperature thereof, said applied force varies between about 15,000-50,000 psi, and said time is between about 10-30 minutes.
Claim 5
Dependent Claim
31 words
A method according to claim 1 wherein said metallic glass exhibits exceptional resistance to sea water and has the formula Fe 58 Cr 14 Cu 6 Si 6 B 6 .
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-11-02 | 1985-05-04 | 1985-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-02 | 1989-05-04 | 1989-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-02 | 1993-05-04 | 1993-11-03 | $7700.00 | Window Closed / Lapsed |