US4759906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Function alloy and method of producing the same
Assignee: Sumitomo Electric Industries Ltd
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Filing: 1987-02-04
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Granted: 1988-07-26
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Expires: 2007-02-04
Abstract
Abstract A method of producing functional alloys by adding not more than 20 atomic percent Cr to a TiPd alloy with 40-60 atomic percent Ti which develops thermoelastic martensitic transformation, for adjusting the transformation point of the alloy. Such a functional alloy may comprise in addition to the Ti, 0.001-20 atomic percent Cr, the balance being Pd.
Inventors
- 👤 Soji Nenno
- 👤 Kazuyuki Enami
- 👤 Kazuhiko Hayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:08
CPC Classifications
C; C22; C22C; C22C5/00; C22C5/04; C22C30/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
38 words
A functional alloy, comprising 40-60 atomic percent of Ti, 0.001-18 atomic percent of Cr, and the balance being Pd, said functional alloy having a martensitic transformation temperature within the range of about -196° C. and about +510° C.
Claim 2
Dependent Claim
38 words
A functional alloy, comprising 40-60 atomic percent of Ti, 0.001-18 atomic percent of Cr, and the balance being Pd, said functional alloy having a martensitic transformation temperature within the range of about -196° C. and about +510° C.
Claim 3
Dependent Claim
31 words
The functional alloy of claim 1, wherein Ti is within the range of 45-55 atomic percent, and Cr is within the range of 0.2-12 atomic percent, and the balance being Pd.
Claim 4
Independent Claim
71 words
A method of controlling the martensitic transformation temperature of a functional alloy within a wide range, comprising the steps of: (a) providing a TiPd alloy including 40 to 60 atomic percent of Ti, and (b) adding to said TiPd alloy chromium in the range of 0.001 to 18 atomic percent for producing thermoelastic martensitic transformations within a temperature range of about -196° C. to about +510° C.; the remainder being Pd.
Claim 5
Independent Claim
71 words
A method of controlling the martensitic transformation temperature of a functional alloy within a wide range, comprising the steps of: (a) providing a TiPd alloy including 40 to 60 atomic percent of Ti, and (b) adding to said TiPd alloy chromium in the range of 0.001 to 18 atomic percent for producing thermoelastic martensitic transformations within a temperature range of about -196° C. to about +510° C.; the remainder being Pd.
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) | 1991-07-26 | 1992-01-25 | 1992-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-26 | 1996-01-25 | 1996-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-26 | 2000-01-25 | 2000-07-26 | $7700.00 | Window Closed / Lapsed |