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US5589011A
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Nanostructured steel alloy
Assignee: CONNECTICUT THE, University of
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Filing: 1995-02-15
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Granted: 1996-12-31
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Expires: 2015-02-15
Abstract
Abstract A nanostructured steel alloy is presented. Preferably, the nanostructured steel is of the M50 type, and comprises iron, molybdenum, chromium, vanadium and carbon. In accordance with an important feature of this invention, the grain size of the steel is in the nanometer range. In accordance with the method of the present invention, the nanostructured steel is prepared via chemical synthesis from iron, molybdenum, chromium and vanadium starting materials. Decomposition of metal precursors or reduction of metal halides is followed by consolidation of the resulting nanostructured steel powders into bulk steel. The nanostructured steel of this invention finds particular utility in the manufacture of cutting tools and bearings.
Inventors
- 👤 Kenneth E. Gonsalves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:25
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/16; B22F9/30; B22F9/305; B22F1/00; B22F1/05; B22F1/054; B22F1/07; B22F9/18; B22F9/24; B82; B82Y; B82Y30/00; C; C01; C01B; C01B32/00; C01B32/90; C01B32/907; C01B32/914; C22; C22C; C22C33/00; C22C33/02; C22C33/0257; B22F1/08; B22F5/00; B22F2005/001; B22F9/02; B22F9/04; B22F2009/041; B22F2998/00; B22F2998/10; C01P; C01P2002/00; C01P2002/60; C01P2002/70; C01P2002/72; C01P2002/80; C01P2002/85; C01P2004/00; C01P2004/01; C01P2004/03; C01P2004/04; C01P2004/60; C01P2004/64
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
14 words
A steel alloy, comprising: nanostructured crystals comprised of iron, chromium, molybdenum, vanadium and carbon.
Claim 2
Dependent Claim
14 words
A steel alloy, comprising: nanostructured crystals comprised of iron, chromium, molybdenum, vanadium and carbon.
Claim 3
Dependent Claim
82 words
The steel alloy of claim 1, wherein: said iron is in the range of about 80 to about 95 weight percent, said chromium is in the range of about 2 to about 8 weight percent, said molybdenum is in the range of about 2 to about 8 weight percent, said vanadium is in the range of about 1.0 to about 3.4 weight percent and said carbon is in the range of about 0.1 to about 8 weight percent of the total composition.
Claim 4
Dependent Claim
42 words
The steel alloy of claim 2, wherein: said iron is 89.7 weight percent, said chromium is 4.0 weight percent, said molybdenum is 4.5 weight percent, said vanadium is 1.0 weight percent and said carbon is 0.8 weight percent of the total composition.
Claim 5
Dependent Claim
42 words
The steel alloy of claim 1, wherein: said iron is 94.2 weight percent, said chromium is 0.3 weight percent, said molybdenum is 0.4 weight percent, said vanadium is 2.1 weight percent, and said carbon is 3.0 weight percent of the total composition.
Claim 6
Dependent Claim
27 words
The steel alloy of claim 1, wherein: said nanostructured crystals are derived from compression of a nanostructured steel powder comprising said iron, chromium, molybdenum, vanadium and carbon.
Claim 7
Dependent Claim
81 words
The steel alloy of claim 5, wherein: said iron is in the range of about 80 to about 95 weight percent, said chromium is in the range of about 2 to about 8 weight percent, said molybdenum is in the range of about 2 to about 8 weight percent, said vanadium is in the range of about 1.0 to about 3.4 weight percent and said carbon is in the range of about 0.1to about 8 weight percent of the total composition.
Claim 8
Dependent Claim
42 words
The steel alloy of claim 6, wherein: said iron is 89.7 weight percent, said chromium is 4.0 weight percent, said molybdenum is 4.5 weight percent, said vanadium is 1.0 weight percent and said carbon is 0.8 weight percent of the total composition.
Claim 9
Dependent Claim
42 words
The steel alloy of claim 5, wherein: said iron is 94.2 weight percent, said chromium is 0.3 weight percent, said molybdenum is 0.4 weight percent, said vanadium is 2.1 weight percent, and said carbon is 3.0 weight percent of the total composition.
Claim 10
Dependent Claim
15 words
An article, comprising: nanostructured steel alloy, said alloy comprising iron, chromium, molybdenum, vanadium and carbon.
Claim 11
Dependent Claim
15 words
An article, comprising: nanostructured steel alloy, said alloy comprising iron, chromium, molybdenum, vanadium and carbon.
Claim 12
Dependent Claim
81 words
The article of claim 9 wherein: said iron is in the range of about 80 to about 95 weight percent, said chromium is in the range of about 2 to about 8 weight percent, said molybdenum is in the range of about 2 to about 8 weight percent, said vanadium is in the range of about 1.0 to about 3.4 weight percent and said carbon is in the range of about 0.1 to about 8 weight percent of the total composition.
Claim 13
Dependent Claim
41 words
The article of claim 10 wherein: said iron is 89.7 weight percent, said chromium is 4.0 weight percent, said molybdenum is 4.5 weight percent, said vanadium is 1.0 weight percent and said carbon is 0.8 weight percent of the total composition.
Claim 14
Dependent Claim
25 words
The article of claim 9, wherein: said nanostructured steel is derived from compression of a nanostructured steel powder comprising iron, chromium, molybdenum, vanadium and carbon.
Claim 15
Dependent Claim
81 words
The article of claim 12, wherein: said iron is in the range of about 80 to about 95 weight percent, said chromium is in the range of about 2 to about 8 weight percent, said molybdenum is in the range of about 2 to about 8 weight percent, said vanadium is in the range of about 1.0 to about 3.4 weight percent and said carbon is in the range of about 0.1 to about 8 weight percent of the total composition.
Claim 16
Dependent Claim
41 words
The article of claim 13 wherein: said iron is 89.7 weight percent, said chromium is 4.0 weight percent, said molybdenum is 4.5 weight percent, said vanadium is 1.0 weight percent and said carbon is 0.8 weight percent of the total composition.
Claim 17
Dependent Claim
41 words
The article of claim 12, wherein: said iron is 94.2 weight percent, said chromium is 0.3 weight percent, said molybdenum is 0.4 weight percent, said vanadium is 2.1 weight percent, and said carbon is 3.0 weight percent of the total composition.
Claim 18
Dependent Claim
15 words
A bearing comprising: nanostructured steel alloy, said alloy comprising iron, chromium, molybdenum, vanadium and carbon.
Claim 19
Dependent Claim
15 words
A bearing comprising: nanostructured steel alloy, said alloy comprising iron, chromium, molybdenum, vanadium and carbon.
Claim 20
Dependent Claim
16 words
A cutting tool comprising: nanostructured steel alloy, said alloy comprising iron, chromium, molybdenum, vanadium and carbon.
Claim 21
Dependent Claim
16 words
A cutting tool comprising: nanostructured steel alloy, said alloy comprising iron, chromium, molybdenum, vanadium and carbon.
Claim 22
Dependent Claim
15 words
A steel powder comprising: iron, chromium. molybdenum, vanadium and carbon, wherein, the powder is nanostructured.
Claim 23
Dependent Claim
15 words
A steel powder comprising: iron, chromium. molybdenum, vanadium and carbon, wherein, the powder is nanostructured.
Claim 24
Dependent Claim
83 words
The nanostructured steel powder of claim 18, wherein: said iron is in the range of about 80 to about 95 weight percent, said chromium is in the range of about 2 to about 8 weight percent, said molybdenum is in the range of about 2 to about 8 weight percent, said vanadium is in the range of about 1.0 to about 3.4 weight percent and said carbon is in the range of about 0.1 to about 8 weight percent of the total composition.
Claim 25
Dependent Claim
43 words
The nanostructured steel alloy of claim 2, wherein: said iron is 89.7 weight percent, said chromium is 4.0 weight percent, said molybdenum is 4.5 weight percent, said vanadium is 1.0 weight percent and said carbon is 0.8 weight percent of the total composition.
Claim 26
Dependent Claim
43 words
The nanostructured steel alloy of claim 1, wherein: said iron is 94.2 weight percent, said chromium is 0.3 weight percent, said molybdenum is 0.4 weight percent, said vanadium is 2.1 weight percent, and said carbon is 3.0 weight percent of the total composition.
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) | 1999-12-31 | 2000-07-01 | 2000-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-12-31 | 2004-07-01 | 2004-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-12-31 | 2008-07-01 | 2008-12-31 | $7700.00 | Window Closed / Lapsed |