US5135589A
Expired / Lapsed
US
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Metastable hydrogen storage alloy material
Assignee: Chevron Technology Ventures LLC
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Filing: 1990-04-16
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Granted: 1992-08-04
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Expires: 2010-04-16
Abstract
Abstract Disclosed is an improved metastable, multi-component, multi-phase hydrogen storage alloy material formed by rapid solidifcation from a melt. The improved metastable hydrogen storage alloy is characterized by a refined grain size of Approximately 1 micron or less, and the reduction, or elimination of deleterious phases. The microstructure of the alloy is relatively disordered, and each phase of the material comprises less than 50 atomic percent vanadium and chromium combined. The nominal composition is: V.sub.y'-y Ni.sub.y Ti.sub.x'-x Zr.sub.x Cr.sub.x wherein x' is between 1.8 and 2.2; x is between 0 and 1.5; y' is between 3.6 and 4.4; y is between 0.6 and 3.5; and z is between 0 and 1.44.
Inventors
- 👤 Michael A. Fetcenko
- 👤 Stanford R. Ovshinsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:37
CPC Classifications
C; C22; C22C; C22C30/00; C01; C01B; C01B3/00; C01B3/0005; C01B3/001; C01B3/0018; C01B3/0031; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/32; Y10; Y10S; Y10S420/00; Y10S420/90
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
91 words
An improved, porous, metastable multi-component, multiphase hydrogen storage alloy material adapted for use in a rechargeable electrochemical cell, said hydrogen storage alloy material having the nominal composition: (Vy'-yNiyTix'--xZrxCrz) where x' is between 1.8 and 2.2, X is between 0 and 1.5; y' is between 3.6 and 4.4, y is between 0.6 and 3.5; and z is an effective amount between 0.0 and 1.44, said material formed by rapid solidification from a melt and wherein said material has a metastable structure characterized by an average grain size of one micron or less.
Claim 2
Dependent Claim
91 words
An improved, porous, metastable multi-component, multiphase hydrogen storage alloy material adapted for use in a rechargeable electrochemical cell, said hydrogen storage alloy material having the nominal composition: (Vy'-yNiyTix'--xZrxCrz) where x' is between 1.8 and 2.2, X is between 0 and 1.5; y' is between 3.6 and 4.4, y is between 0.6 and 3.5; and z is an effective amount between 0.0 and 1.44, said material formed by rapid solidification from a melt and wherein said material has a metastable structure characterized by an average grain size of one micron or less.
Claim 3
Dependent Claim
20 words
The improved alloy material as recited in claim 1, wherein said material has the composition V.sub.22 Ti.sub.16 Zr.sub.16 Ni.sub.39 Cr.sub.7.
Claim 4
Dependent Claim
31 words
The improved alloy material as recited in claim 2, wherein the multiphase alloy has individual phases having compositions of: (i) V:Ti:Zr:Ni:Cr 18.3:19.3:16.7:40.7:5.0 (ii) V:Ti:Zr:Ni:Cr 31.8:15.5:11.9:30.3:10.5 (iii) V:Ti:Zr:Ni:Cr 36.0:14.0:10.2:27.2:12.6 (iv) V:Ti:Zr:Ni:Cr 22.9:17.3:15.6:37.3:6.8
Claim 5
Dependent Claim
19 words
The improved alloy material as recited in claim 3, wherein the predominant phase is V.sub.22.9 Ti.sub.17.3 Zr.sub.15.6 Ni.sub.37.3 Cr.sub.6.8
Claim 6
Dependent Claim
20 words
The improved alloy material as recited in claim 1, wherein said material has the composition V.sub.25 Ti.sub.17 Zr.sub.16 Ni.sub.40 Cr.sub.2.
Claim 7
Dependent Claim
20 words
The improved alloy material as recited in claim 1, wherein said material has the composition V.sub.33 Ti.sub.13 Zr.sub.14 Ni.sub.53 Cr.sub.7.
Claim 8
Dependent Claim
20 words
The improved alloy material as recited in claim 1, wherein said material has the composition V.sub.25 Ti.sub.17 Zr.sub.16 Ni.sub.40 Cr.sub.2.
Claim 9
Dependent Claim
20 words
The improved alloy material as recited in claim 1, wherein said material has the composition V.sub.25 Ti.sub.17 Zr.sub.15 Ni.sub.40 Cr.sub.4.
Claim 10
Dependent Claim
34 words
The improved alloy material of claim 1, wherein said material includes a plurality of compositionally different phases and wherein no phase includes amounts of vanadium and chromium which, when added together, exceed 50 percent.
Claim 11
Dependent Claim
106 words
An improved, porous, metastable multi-component, multiphase hydrogen storage alloy material adapted for use in a rechargeable electrochemical cell, said multi-component hydrogen storage material having the nominal composition (Vy'-yNiyTix'-xZrxCrz) where x' is between 1.8 and 2.2, x is between 0 and 1.5; y' is between 3.6 and 4.4, y is between 0.6 and 3.5; and z is an effective amount between 0.0 and 1.44, which material is formed by rapid solidification from a melt and wherein the multiphase material has a refined grain size, a relatively disordered microstructure and is characterized by each phase of said material comprising less than 50 atomic percent vanadium and chromium combined.
Claim 12
Dependent Claim
106 words
An improved, porous, metastable multi-component, multiphase hydrogen storage alloy material adapted for use in a rechargeable electrochemical cell, said multi-component hydrogen storage material having the nominal composition (Vy'-yNiyTix'-xZrxCrz) where x' is between 1.8 and 2.2, x is between 0 and 1.5; y' is between 3.6 and 4.4, y is between 0.6 and 3.5; and z is an effective amount between 0.0 and 1.44, which material is formed by rapid solidification from a melt and wherein the multiphase material has a refined grain size, a relatively disordered microstructure and is characterized by each phase of said material comprising less than 50 atomic percent vanadium and chromium combined.
Claim 13
Dependent Claim
31 words
The improved alloy material as recited in claim 10, wherein the multiphase alloy has individual phases having compositions of: (i) V:Ti:Zr:Ni:Cr 18.3:19.3:16.7:40.7:5.0 (ii) V:Ti:Zr:Ni:Cr 31.8:15.5:11.9:30.3:10.5 (iii) V:Ti:Zr:Ni:Cr 3.60:14.0:10.2:27.2:12.6 (iv) V:Ti:Zr:Ni:Cr 22.9:17.3:15.6:37.3:6.8
Claim 14
Dependent Claim
19 words
The improved alloy material as recited in claim 11, wherein the predominant phase is: V.sub.22.9 Ti.sub.17.3 Zr.sub.15.6 Ni.sub.37.3 (Cr.sub.6.8
Claim 15
Dependent Claim
20 words
The improved alloy material as recited in claim 10, wherein said material has the composition V.sub.22 Ti.sub.16 Zr.sub.16 Ni.sub.39 Cr.sub.7.
Claim 16
Dependent Claim
20 words
The improved alloy material as recited in claim 10, wherein said material has the composition V.sub.25 Ti.sub.17 Zr.sub.16 Ni.sub.40 Cr.sub.2.
Claim 17
Dependent Claim
20 words
The improved alloy material as recited in claim 10, wherein said material has the composition V.sub.33 Ti.sub.13 Zr.sub.14 Ni.sub.53 Cr.sub.7.
Claim 18
Dependent Claim
20 words
The improved alloy material as recited in claim 10, wherein said material has the composition V.sub.25 Ti.sub.17 Zr.sub.16 Ni.sub.40 Cr.sub.2.
Claim 19
Dependent Claim
20 words
The improved alloy material as recited in claim 10, wherein said material has the composition V.sub.25 Ti.sub.17 Zr.sub.15 Ni.sub.40 Cr.sub.4.
Claim 20
Dependent Claim
17 words
The improved alloy material as recited in claim 10, wherein said material is a metastable polycrystalline material.
Claim 21
Dependent Claim
20 words
The improved alloy material as recited in claim 10, wherein said material demonstrates improved grain boundaries to inhibit alloy corrosion.
Claim 22
Dependent Claim
34 words
The improved alloy material of claim 10, wherein said material includes a plurality of compositionally different phases and wherein no phase includes amounts of vanadium and chromium which, when added together, exceed 50 percent.
Claim 23
Dependent Claim
24 words
The improved alloy material as recited in claim 10, wherein the grain size of said polycrystalline material is less than about 10 micron size.
Claim 24
Dependent Claim
22 words
The improved alloy material as recited in claim 21, wherein the grain of said material is less than about 1 micron size.
References Cited (Backward Citations)
US4728586A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-08-04 | 1996-02-03 | 1996-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-04 | 2000-02-03 | 2000-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-04 | 2004-02-03 | 2004-08-04 | $7700.00 | Window Closed / Lapsed |