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US4563215A
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Titanium nitride base cermets with high toughness
Assignee: Niterra Co Ltd
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Filing: 1983-01-21
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Granted: 1986-01-07
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Expires: 2003-01-21
Abstract
Abstract A titanium nitride base cermet with high toughness comprises, by weight, 42 to 95% of TiN, 2 to 20% of one or more of Mo, W and the carbides thereof, 2.85 to 30% of an Ni, Co or a mixture thereof, and 0.15 to 8.0% of Al 4 C 3 , with the balance being inevitable impurities, wherein half or less of TiN may be replaced with one or more of the carbides and/or carbonitrides of metals from the Groups IVa and Va of the periodic table, with the proviso that the amount of TiN is no less than 30% in the cermet.
Inventors
- 👤 Yoshihiro Yamamoto
- 👤 Junichiro Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:53
CPC Classifications
C; C22; C22C; C22C29/00; C22C29/16; C22C29/02
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
58 words
A titanium nitride base cermet with high toughness consisting essentially of, by weight, 42 to 95% of TiN, 2 to 20% of one or more of Mo, W and the carbides thereof, 2.85 to 30% of Ni, Co or a mixture thereof, and 0.15 to 8.0% of Al 4 C 3 , with the balance being inevitable impurities.
Claim 2
Dependent Claim
58 words
A titanium nitride base cermet with high toughness consisting essentially of, by weight, 42 to 95% of TiN, 2 to 20% of one or more of Mo, W and the carbides thereof, 2.85 to 30% of Ni, Co or a mixture thereof, and 0.15 to 8.0% of Al 4 C 3 , with the balance being inevitable impurities.
Claim 3
Dependent Claim
15 words
A cermet as defined in claim 1, wherein TiN is 42 to 91% by weight.
Claim 4
Dependent Claim
15 words
A cermet as defined in claim 2, wherein TiN is 42 to 70% by weight.
Claim 5
Dependent Claim
109 words
A titanium nitride base cermet with high toughness consisting essentially of, by weight, 35 to 95% of TiN, 2 to 20% of one or more of Mo, W and the carbides thereof, 2.85 to 30% of Ni, Co or a mixture thereof, and 0.15 to 8.0% of Al 4 C 3 , with the balance being inevitable impurities, wherein half or less, by weight, of TiN is replaced with one or more of the carbides and/or carbonitrides of metals selected from the group consisting of Ti, Zr, Hf, V, Nb and Ta, with the proviso that the remaining amount of TiN is no less than 30% in the cermet.
Claim 6
Dependent Claim
109 words
A titanium nitride base cermet with high toughness consisting essentially of, by weight, 35 to 95% of TiN, 2 to 20% of one or more of Mo, W and the carbides thereof, 2.85 to 30% of Ni, Co or a mixture thereof, and 0.15 to 8.0% of Al 4 C 3 , with the balance being inevitable impurities, wherein half or less, by weight, of TiN is replaced with one or more of the carbides and/or carbonitrides of metals selected from the group consisting of Ti, Zr, Hf, V, Nb and Ta, with the proviso that the remaining amount of TiN is no less than 30% in the cermet.
Claim 7
Dependent Claim
40 words
A cermet as defined in claim 1 or 4, wherein the impurities encompass, by weight less than 1.0% O 2 , less 1.5% Fe, less than 0.5% Cr and traces of Na, Ca, Si, S, Cu, Mg, P and B.
Claim 8
Dependent Claim
33 words
A cermet as defined in claim 4, wherein the carbide and/or carbonitride of the metals is one or more selected from the group consisting of TiC, ZrC, HfC, VC, NbC, TaC and TiCN.
Claim 9
Dependent Claim
20 words
A cermet as defined in claim 1 or 4, wherein Al 4 C 3 is 0.5 to 7% by weight.
Claim 10
Dependent Claim
18 words
A cermet as defined in claim 7, wherein Al 4 C 3 is 0.5 to 1.5% by weight.
Claim 11
Dependent Claim
22 words
A cermet as defined in claim 1 or 2, wherein W, Mo and/or carbides thereof amount to 4.7 to 17% by weight.
Claim 12
Dependent Claim
20 words
A cermet as defined in claim 1 or 4, wherein Ni and/or Co amount to 4 to 23% by weight.
Claim 13
Dependent Claim
18 words
A cermet as defined in claim 10, wherein Ni and/or Co amount to 4 to 18% by weight.
Claim 14
Dependent Claim
18 words
A cermet as defined in claim 1 or 4, wherein the Rockwell hardness HRA is 88.0 or more.
Claim 15
Dependent Claim
16 words
A cermet as defined in claim 12, wherein the Rockwell hardness HRA is 91.3 or more.
Claim 16
Dependent Claim
20 words
A cermet as defined in claim 4, wherein the remaining TiN after substitution amounts to 35 to 91% by weight.
Claim 17
Dependent Claim
20 words
A cermet as defined in claim 14, wherein the remaining TiN after substitution amounts to 35 to 70% by weight.
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) | 1989-01-06 | 1989-07-08 | 1990-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-06 | 1993-07-08 | 1994-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-06 | 1997-07-08 | 1998-01-07 | $7700.00 | Window Closed / Lapsed |