US4153484A
Expired / Lapsed
US
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Hydrogen storage material
Assignee: Panasonic Holdings Corp
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Filing: 1977-01-18
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Granted: 1979-05-08
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Expires: 1997-01-18
Abstract
Abstract An economical metallic material for storage of hydrogen constituted by an intermetallic compound which exists as a Laves phase, has a hexagonal crystal structure of the MgZn2 type (C14 type), and in which the crystal lattice parameters a and c are in the ranges a= 4.80 DIFFERENCE 5.10 (A) and c= 7.88 DIFFERENCE 8.28 (A). The material of the inventon permits absorption of large amounts of hydrogen and efficient desorption thereof under close to normal temperature and pressure conditions, and for reduced cost of material preferably includes as principal components manganese and at least titanium or zirconium.
Inventors
- 👤 Takaharu Gamo
- 👤 Yoshio Moriwaki
- 👤 Toshio Yamashita
- 👤 Masataro Fukuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:47
CPC Classifications
C; 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: 21
Claim 1
Independent Claim
46 words
A Ti-Zr-Mn ternary alloy which is substantially a Laves phase intermetallic compound having a hexagonal MgZn 2 (C14) type crystal structure with crystal structure parameters a and c which have values in the range: a = 4.80 ˜ 5.10 A, c = 7.88 ˜ 8.28 A.
Claim 2
Dependent Claim
46 words
A Ti-Zr-Mn ternary alloy which is substantially a Laves phase intermetallic compound having a hexagonal MgZn 2 (C14) type crystal structure with crystal structure parameters a and c which have values in the range: a = 4.80 ˜ 5.10 A, c = 7.88 ˜ 8.28 A.
Claim 3
Dependent Claim
55 words
An alloy according to claim 1 having the formula xTi -- yZr -- zMn, in which x, y and z are values indicating atomic percentages, 0 21 x ≦ 60, 0 < y ≦ 60, z = 40 ˜ 70, x + y = 30 ˜ 60, and x + y + z = 100.
Claim 4
Dependent Claim
18 words
An alloy according to claim 2 wherein said value of atomic percentage z is approximately equal to 66.7.
Claim 5
Dependent Claim
31 words
An alloy as claimed in claim 1 wherein said crystal lattice parameters a and c are in the range: a = 4.84 ˜ 4.96 A c = 7.95 ˜ 8.16 A.
Claim 6
Dependent Claim
46 words
A Ti-Zr-Mn-Mo quaternary alloy which is substantially a Laves phase intermetallic compound having a hexagonal MgZn 2 (C14) type crystal structure with crystal structure parameters a and c which have values in the range: a = 4.80 ˜ 5.10 A, c = 7.88 ˜ 8.28 A.
Claim 7
Dependent Claim
46 words
A Ti-Zr-Mn-Mo quaternary alloy which is substantially a Laves phase intermetallic compound having a hexagonal MgZn 2 (C14) type crystal structure with crystal structure parameters a and c which have values in the range: a = 4.80 ˜ 5.10 A, c = 7.88 ˜ 8.28 A.
Claim 8
Dependent Claim
45 words
An alloy according to claim 5 having the formula Ti x-y Zr y Mn 2-z Mo z , in which x, y, and z are values indicating atomic ratios, x = 1.0 ˜ 1.5, 0 - y ≦ 1.0, and 0 < z ≦ 1.0.
Claim 9
Dependent Claim
16 words
An alloy according to claim 6, wherein said atomic ratio value x is equal to 1.0.
Claim 10
Dependent Claim
31 words
An alloy according to claim 6, wherein said atomic ratio values x, y, and z are substantially x = 1.0, y = 0.2 ˜ 0.3, and z = 0.1 ˜ 0.4.
Claim 11
Dependent Claim
22 words
An alloy according to claim 8, wherein said atomic ratio values y and z substantially have the values 0.3 and 0.1, respectively.
Claim 12
Dependent Claim
22 words
An alloy according to claim 8, wherein said atomic ratio values y and z substantially have the values 0.2 and 0.3, respectively.
Claim 13
Dependent Claim
30 words
An alloy according to claim 5, wherein said crystal lattice parameters a and c are in the range: a = 4.85 ˜ 4.96 A c = 7.95 ˜ 8.18 A.
Claim 14
Dependent Claim
46 words
A Ti-Zr-Mn-Cu quaternary alloy which is substantially a Laves phase intermetallic compound having a hexagonal MgZn 2 (C14) type crystal structure with crystal structure parameters a and c which have values in the range: a = 4.80 ˜ 5.10 A, c = 7.88 ˜ 8.28 A.
Claim 15
Dependent Claim
46 words
A Ti-Zr-Mn-Cu quaternary alloy which is substantially a Laves phase intermetallic compound having a hexagonal MgZn 2 (C14) type crystal structure with crystal structure parameters a and c which have values in the range: a = 4.80 ˜ 5.10 A, c = 7.88 ˜ 8.28 A.
Claim 16
Dependent Claim
45 words
An alloy according to claim 12 having the formula Ti x-y Zr y Mn 2-z Cu z , in which x, y, and z are values indicating atomic ratios, x = 1.0 ˜ 1.5, 0 < y ≦ 1.0, and 0 < z ≦ 1.5.
Claim 17
Dependent Claim
17 words
An alloy according to claim 13 wherein said atomic ratio value x substantially has the value 1.0.
Claim 18
Dependent Claim
27 words
An alloy according to claim 13 wherein said atomic ratio values are substantially x = 1.0, y = 0.2 ˜ 0.6, and z = 0.05 ˜ 0.5.
Claim 19
Dependent Claim
22 words
An alloy according to claim 15 wherein said atomic ratio values y and z are substantially equal to 0.2 and 0.5, respectively.
Claim 20
Dependent Claim
22 words
An alloy according to claim 15 wherein said atomic ratio values y and z are substantially equal to 0.4 and 0.1, respectively.
Claim 21
Dependent Claim
30 words
An alloy according to claim 12 wherein said crystal lattic parameters a and c are in the range: a = 4.85 ˜ 4.96 A c = 7.95 ˜ 8.18 A.
References Cited (Backward Citations)
US2926981A
Cited
US3922872A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-05-07 | 1982-11-06 | 1983-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-07 | 1986-11-06 | 1987-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-07 | 1990-11-06 | 1991-05-08 | $7700.00 | Window Closed / Lapsed |