US6921422B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ductile binder phase for use with A1MgB14 and other hard materials
Assignee: Iowa State University Research Foundation Inc
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Filing: 2003-09-23
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Granted: 2005-07-26
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Expires: 2023-09-23
Abstract
Abstract This invention relates to a ductile binder phase for use with AlMgB 14 and other hard materials. The ductile binder phase, a cobalt-manganese alloy, is used in appropriate quantities to tailor good hardness and reasonable fracture toughness for hard materials so they can be used suitably in industrial machining and grinding applications.
Inventors
- 👤 Bruce A. Cook
- 👤 Alan Russell
- 👤 Joel Harringa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:24
CPC Classifications
C; C22; C22C; C22C29/00; C22C29/14
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
70 words
An abrasive alloy comprising AlMgB 14 X where X is present in an amount of from 5 wt. % to 30 wt. % and comprises a doping agent from the group consisting of Group III, IV, V elements and borides and nitrides thereof with a hardness over 20 GPa in combination with from about 5 vol. % to about 30 vol. % of a ductile binder phase of Co—Mn alloy.
Claim 2
Dependent Claim
70 words
An abrasive alloy comprising AlMgB 14 X where X is present in an amount of from 5 wt. % to 30 wt. % and comprises a doping agent from the group consisting of Group III, IV, V elements and borides and nitrides thereof with a hardness over 20 GPa in combination with from about 5 vol. % to about 30 vol. % of a ductile binder phase of Co—Mn alloy.
Claim 3
Dependent Claim
27 words
The abrasive alloy of claim 1 wherein the ductile binder phase is present in an amount of from about 10 vol. % to about 20 vol. %.
Claim 4
Dependent Claim
25 words
The abrasive alloy of claim 1 wherein the ductile binder phase of Co—Mn alloy ranges from 5% to 45% Mn on an atomic weight basis.
Claim 5
Dependent Claim
28 words
The abrasive alloy of claim 3 wherein in the ductile binder phase of Co—Mn alloy Mn is present in an amount of between 17% (atomic) to 38% (atomic).
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2008-07-25 | 2009-01-24 | 2009-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2012-07-25 | 2013-01-24 | 2013-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2016-07-25 | 2017-01-24 | 2017-07-26 | $7700.00 | Window Closed / Lapsed |