US5149361A
Expired / Lapsed
US
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Cermet alloy
Assignee: Hitachi Taga Engineering Co Ltd
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Filing: 1989-12-26
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Granted: 1992-09-22
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Expires: 2009-12-26
Abstract
Abstract A cermet alloy having a structure including a hard phase and a bonding phase which is composed of at least one ferrous metal, said bonding phase containing fine hard grains of a mean grain size not greater than 2000 Å dispersed therein. The structure has a composition consisting of 10 to 70 wt % of TiCN, 5 to 30 wt % of WC, 5 to 30 wt % of NbC, 1 to 10 wt % of Mo 2 C, 0.5 to 5 wt% of VC, 0.05 to 3 wt % of ZrC, 5 to 25 wt % of (Ni, Co), and not smaller than 2.5 wt% of total nitrogen and incidental impurities.
Inventors
- 👤 Yusuke Iyori
- 👤 Nobuhiko Shima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:12
CPC Classifications
C; C22; C22C; C22C29/00; C22C29/02; C22C29/04; B; B22; B22F; B22F2998/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
93 words
A cermet alloy having a structure including a hard phase and a bonding phase which is comprised of at least one of iron group metals of the periodic table, said bonding phase containing fine hard grains of a mean grain size not greater than 2000 Å dispersed therein; wherein said fine hard grains are made up of at least one grain selected from the group consisting of ZrN, ZrCN, HfC, Al 2 O 3 , Y 2 O 3 , Dy 2 O 3 , ZrO 2 and Nd 2 O 3 .
Claim 2
Dependent Claim
93 words
A cermet alloy having a structure including a hard phase and a bonding phase which is comprised of at least one of iron group metals of the periodic table, said bonding phase containing fine hard grains of a mean grain size not greater than 2000 Å dispersed therein; wherein said fine hard grains are made up of at least one grain selected from the group consisting of ZrN, ZrCN, HfC, Al 2 O 3 , Y 2 O 3 , Dy 2 O 3 , ZrO 2 and Nd 2 O 3 .
Claim 3
Dependent Claim
16 words
A cermet alloy according to claim 1, having a coercive force not greater than 50 Oe.
Claim 4
Dependent Claim
16 words
A cermet alloy according to claim 1, wherein the ratio Ni/(Co+Ni) is not smaller than 3/10.
References Cited (Backward Citations)
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EP0181979A1
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US4828611A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-09-22 | 1996-03-23 | 1996-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-22 | 2000-03-23 | 2000-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-22 | 2004-03-23 | 2004-09-22 | $7700.00 | Window Closed / Lapsed |