Patent US5295190A successfully refreshed from Google Patents.
US4585672A
Expired / Lapsed
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Hydrogen charged thin film conductor
Assignee: Syracuse University
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Filing: 1985-02-27
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Granted: 1986-04-29
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Expires: 2005-02-27
Abstract
Abstract A thin film stripe that includes a conductive metal alloyed with at least one other element capable of chemically bonding with hydrogen and a compound formed by hydrogen chemically bonded with at least one other element in sufficient amounts to increase the stripe's resistance to electromigration failure at normal operating temperatures and pressures.
Inventors
- 👤 James A. Schwarz
- 👤 Robert W. Pasco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:16
CPC Classifications
H; H01; H01F; H01F10/00; H01F10/06; H10; H10W; H10W20/00; H10W20/40; H10W20/41; H10W20/425; Y; Y10; Y10S; Y10S438/00; Y10S438/927
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
122 words
A method of manufacturing an electrical conductive stripe having a high resistance to electromigration failure that includes the steps of alloying a conductive metal, of the type subject to electromigration under high current densities, with at least one other metal element serving as a hydrogen storage element capable of forming a chemically bonded compound with hydrogen, depositing upon a substrate the alloy in the form of a thin film stripe, exposing said alloy stripe to a hydrogen atmosphere, heating the stripe while exposed to the hydrogen atmosphere to a temperature at which the hydrogen reacts with said storage element to form a compound therewith to store the hydrogen in compound form in said storage element, and cooling said alloy to room temperature.
Claim 2
Independent Claim
122 words
A method of manufacturing an electrical conductive stripe having a high resistance to electromigration failure that includes the steps of alloying a conductive metal, of the type subject to electromigration under high current densities, with at least one other metal element serving as a hydrogen storage element capable of forming a chemically bonded compound with hydrogen, depositing upon a substrate the alloy in the form of a thin film stripe, exposing said alloy stripe to a hydrogen atmosphere, heating the stripe while exposed to the hydrogen atmosphere to a temperature at which the hydrogen reacts with said storage element to form a compound therewith to store the hydrogen in compound form in said storage element, and cooling said alloy to room temperature.
Claim 3
Dependent Claim
15 words
The method of claim 1 wherein the stripe is cooled in the hydrogen containing atmosphere.
Claim 4
Dependent Claim
31 words
The method of claim 1 that further includes the step of dissociating hydrogen molecules in the ambient to produce hydrogen atoms whereby the reaction of hydrogen with the alloy is enhanced.
Claim 5
Dependent Claim
36 words
The method of claim 1 wherein said at least one metal element is selected from a group of elements comprising Group III-B, Group IV-B, Group VI-B, Group VIII and rare earth metal in the periodic table.
Claim 6
Dependent Claim
32 words
The method of claim 1 wherein said conductive metal is aluminum and said at least one other metal element is titanium added in an amount of between 0.01% and 0.025% by weight.
Claim 7
Dependent Claim
32 words
The method of claim 4 wherein said at least one other metal element is capable of forming a compound with hydrogen which compound is stable at temperatures at or above 100° C.
Claim 8
Dependent Claim
15 words
The method of claim 1 wherein said conductive metal is alloyed with a transition metal.
Claim 9
Dependent Claim
17 words
The method of claim 1 wherein a plurality of metal elements are alloyed with the conductive metal.
Claim 10
Dependent Claim
43 words
The method of claim 3, wherein the step of dissociating hydrogen is carried out by heating the stripe with heating means disposed near said stripe to such a temperature level that hydrogen molecules at or near the stripe are reduced to hydrogen atoms.
Claim 11
Dependent Claim
34 words
The method of claim 3, wherein said step of alloying further includes alloying with a Group VIII metal which has the ability of rendering the dissociation of hydrogen on the surface of the stripe.
Claim 12
Dependent Claim
14 words
The method of claim 3, wherein said Group VIII metal is platinum or nickel.
Claim 13
Dependent Claim
11 words
The method of claim 1, wherein said conductive metal is aluminum.
Claim 14
Dependent Claim
20 words
The method of claim 1, wherein said hydrogen forms a solid solution with said hydrogen storage element in said alloy.
Claim 15
Dependent Claim
23 words
The method of claim 1, wherein said hydrogen forms both a solid solution with said hydrogen storage element and a hydride compound therewith.
References Cited (Backward Citations)
US4017890A
Cited
US4460618A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-04-28 | 1989-10-28 | 1990-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-28 | 1993-10-28 | 1994-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-28 | 1997-10-28 | 1998-04-29 | $7700.00 | Window Closed / Lapsed |