US4268569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating underlayers
Assignee: Carboloy Inc
•
Filing: 1979-02-07
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Granted: 1981-05-19
•
Expires: 1999-02-07
Abstract
Abstract A new and improved coated cemented carbide includes a cemented carbide substrate, an interlayer disposed on the substrate, and a coating of hafnium carbonitride and/or zirconium carbonitride which is firmly and adherently bonded to the substrate and interlayer, the coating having a specific carbon-to-nitrogen ration. Where the coating is hafnium carbonitride the interlayer is be selected from the group consisting of hafnium nitride, titanium nitride, zirconium nitride and a titanium nitride - titanium carbide combination, the titanium nitride - titanium carbide combination consisting of a first layer of titanium nitride and a second layer of titanium carbide overlying the layer of titanium nitride. Where the coating is zirconium carbonitride the interlayer is selected from the group of zirconium nitride, titanium carbide and hafnium carbide.
Inventors
- 👤 Thomas E. Hale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:08
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; B; B23; B23B; B23B27/00; B23B27/14; B23B27/148; C04B41/45; C04B41/52; C04B41/80; C04B41/81; C04B41/89; C23; C23C; C23C30/00; C23C30/005; Y; Y10; Y10T; Y10T407/00; Y10T407/27; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/24983; Y10T428/26; Y10T428/263; Y10T428/31504; Y10T428/31536; Y10T428/31678; Y10T428/8305
Claims Analysis
Total Claims: 54
Claim 1
Independent Claim
115 words
A coated cemented carbide product comprising: a cemented carbide substrate wherein any titanium contained therein is essentially in carbide form; an interlayer disposed on said substrate, said interlayer being selected from the group consisting of hafnium nitride, titanium nitride, zirconium nitride and a titanium nitride-titanium carbide combination, said titanium nitride-titanium carbide combination consisting of a first layer of titanium nitride and a second layer of titanium carbide overlying said first layer of titanium nitride; and a fully dense coating of hafnium carbonitride, said coating being firmly and adherently bonded to said interlayer and said substrate, said hafnium carbonitride coating having an X-ray diffraction lattice parameter within the range of about 4.55 to 4.64 angstrom units.
Claim 2
Dependent Claim
115 words
A coated cemented carbide product comprising: a cemented carbide substrate wherein any titanium contained therein is essentially in carbide form; an interlayer disposed on said substrate, said interlayer being selected from the group consisting of hafnium nitride, titanium nitride, zirconium nitride and a titanium nitride-titanium carbide combination, said titanium nitride-titanium carbide combination consisting of a first layer of titanium nitride and a second layer of titanium carbide overlying said first layer of titanium nitride; and a fully dense coating of hafnium carbonitride, said coating being firmly and adherently bonded to said interlayer and said substrate, said hafnium carbonitride coating having an X-ray diffraction lattice parameter within the range of about 4.55 to 4.64 angstrom units.
Claim 3
Dependent Claim
27 words
A coated cemented carbide product as recited in claim 1 in which said interlayer is sufficiently thick so as to obtain complete surface coverage of the substrate.
Claim 4
Dependent Claim
28 words
A coated cemented carbide product as recited in claim 1 in which said interlayer has a thickness in the range of from about 0.1 microns to 10 microns.
Claim 5
Dependent Claim
27 words
A coated cemented carbide product as recited in claim 1 in which said interlayer has a thickness in the range of from about 0.1 to 5 microns.
Claim 6
Dependent Claim
27 words
A coated cemented carbide product as recited in claim 1 in which said interlayer has a thickness on the range of from about 1 to 2 microns.
Claim 7
Dependent Claim
25 words
A coated cemented carbide product as recited in claim 1 in which said hafnium carbonitride coating has a thickness of approximately 1 to 10 microns.
Claim 8
Dependent Claim
20 words
A coated cemented carbide product as recited in claim 1 in which the interlayer is a layer of hafnium nitride.
Claim 9
Dependent Claim
20 words
A coated cemented carbide product as recited in claim 1 in which the interlayer is a layer of titanium nitride.
Claim 10
Dependent Claim
20 words
A coated cemented carbide product is recited in claim 1 in which the interlayer is a layer of zirconium nitride.
Claim 11
Dependent Claim
58 words
A coated cemented carbide product as recited in claim 1 in which the interlayer consists of a first layer of titanium nitride approximately 1/2 to 1 micron in thickness and a second layer of titanium carbide overlying said first layer of titanium nitride, said second layer of titanium carbide having a thickness of approximately 1/2 to 1 micron.
Claim 12
Dependent Claim
103 words
A coated cemented carbide product comprising: a cemented carbide substrate wherein any titanium contained therein is essentially in carbide form; an interlayer disposed on said substrate, said interlayer inclusing a first layer of titanium nitride approximately 1 to 3 microns thick, and a second layer of titanium carbide approximately 1/2 to 1 micron thick overlying said titanium nitride layer; and a fully dense coating of hafnium carbonitride about 5 microns thick which is firmly and adherently bonded to said interlayer and said substrate, said hafnium carbonitride coating having an X-ray diffraction lattice parameter within the range of about 4.55 to 4.64 angstrom units.
Claim 13
Dependent Claim
103 words
A coated cemented carbide product comprising: a cemented carbide substrate wherein any titanium contained therein is essentially in carbide form; an interlayer disposed on said substrate, said interlayer inclusing a first layer of titanium nitride approximately 1 to 3 microns thick, and a second layer of titanium carbide approximately 1/2 to 1 micron thick overlying said titanium nitride layer; and a fully dense coating of hafnium carbonitride about 5 microns thick which is firmly and adherently bonded to said interlayer and said substrate, said hafnium carbonitride coating having an X-ray diffraction lattice parameter within the range of about 4.55 to 4.64 angstrom units.
Claim 14
Dependent Claim
80 words
A coated cemented carbide product comprising: a cemented carbide substrate wherein any titanium contained therein is essentially in carbide form; an interlayer disposed on said substrate, said interlayer being selected from the group consisting of zirconium nitride, hafnium carbide and titanium carbide; and a fully dense coating of zirconium carbonitride firmly and adherently bonded to said interlayer and said substrate, said zirconium carbonitride coating having an X-ray diffraction lattice parameter within the range of about 4.58 to 4.67 angstrom units.
Claim 15
Dependent Claim
80 words
A coated cemented carbide product comprising: a cemented carbide substrate wherein any titanium contained therein is essentially in carbide form; an interlayer disposed on said substrate, said interlayer being selected from the group consisting of zirconium nitride, hafnium carbide and titanium carbide; and a fully dense coating of zirconium carbonitride firmly and adherently bonded to said interlayer and said substrate, said zirconium carbonitride coating having an X-ray diffraction lattice parameter within the range of about 4.58 to 4.67 angstrom units.
Claim 16
Dependent Claim
27 words
A coated cemented carbide product as recited in claim 12 in which said interlayer is sufficiently thick so as to obtain complete surface coverage of the substrate.
Claim 17
Dependent Claim
29 words
A coated cemented carbide product as recited in claim 12 in which said interlayer has a thickness in the range of from about 0.1 microns to about 10 microns.
Claim 18
Dependent Claim
26 words
A coated cemented carbide product as recited in claim 12 in which said interlayer has a thickness in the range of about 1 to 2 microns.
Claim 19
Dependent Claim
26 words
A coated cemented carbide product as recited in claim 12 in which said interlayer has a thickness in the range of about 0.1 to 5 microns.
Claim 20
Dependent Claim
27 words
A coated carbide product as recited in claim 12 in which said zirconium carbonitride coating has a thickness in the range of approximately 1 to 10 microns.
Claim 21
Dependent Claim
17 words
A coated cemented carbide product as recited in claim 12 in which the interlayer is zirconium nitride.
Claim 22
Dependent Claim
17 words
A coated cemented carbide product as recited in claim 12 in which the interlayer is titanium carbide.
Claim 23
Dependent Claim
17 words
A coated cemented carbide product as recited in claim 12 in which the interlayer is hafnium carbide.
Claim 24
Dependent Claim
80 words
A coated cemented carbide product comprising: a cemented carbide substrate wherein any titanium contained therein is essentially in carbide form; an interlayer of zirconium nitride less than 1 micron thick disposed on said substrate; and a fully dense coating of zirconium carbonitride approximately 4 to 5 microns thick which is firmly and adherently bonded to said interlayer and said substrate, said zirconium carbonitride coating having an X-ray diffraction lattice parameter within the range of about 4.58 to 4.67 angstrom units.
Claim 25
Dependent Claim
80 words
A coated cemented carbide product comprising: a cemented carbide substrate wherein any titanium contained therein is essentially in carbide form; an interlayer of zirconium nitride less than 1 micron thick disposed on said substrate; and a fully dense coating of zirconium carbonitride approximately 4 to 5 microns thick which is firmly and adherently bonded to said interlayer and said substrate, said zirconium carbonitride coating having an X-ray diffraction lattice parameter within the range of about 4.58 to 4.67 angstrom units.
Claim 26
Dependent Claim
77 words
A coated cemented carbide product comprising: a cemented carbide substrate wherein any titanium contained therein is essentially in carbide form; an interlayer of titanium carbide approximately 1.5 microns thick disposed on said substrate; and a fully dense coating of zirconium carbonitride approximately 4 microns thick which is firmly and adherently bonded to said interlayer and said substrate, said zirconium carbonitride coating having an X-ray diffraction lattice parameter within the range of about 4.58 to 4.67 angstrom units.
Claim 27
Dependent Claim
77 words
A coated cemented carbide product comprising: a cemented carbide substrate wherein any titanium contained therein is essentially in carbide form; an interlayer of titanium carbide approximately 1.5 microns thick disposed on said substrate; and a fully dense coating of zirconium carbonitride approximately 4 microns thick which is firmly and adherently bonded to said interlayer and said substrate, said zirconium carbonitride coating having an X-ray diffraction lattice parameter within the range of about 4.58 to 4.67 angstrom units.
Claim 28
Dependent Claim
108 words
A coated cemented carbide product comprising: a cemented carbide substrate comprised of WC--TiC--TaC--Co; an interlayer disposed on said substrate, said interlayer being selected from the group consisting of hafnium nitride, titanium nitride, zirconium nitride and a titanium nitride-titanium carbide combination, said titanium nitride-titanium carbide combination consisting of a first layer of titanium nitride and a second layer of titanium carbide overlying said first layer of titanium nitride; and a fully dense coating of hafnium carbonitride, said coating being firmly and adherently bonded to said interlayer and said substrate, said hafnium carbonitride coating having an X-ray diffraction lattice parameter within the range of about 4.55 to 4.64 angstrom units.
Claim 29
Dependent Claim
108 words
A coated cemented carbide product comprising: a cemented carbide substrate comprised of WC--TiC--TaC--Co; an interlayer disposed on said substrate, said interlayer being selected from the group consisting of hafnium nitride, titanium nitride, zirconium nitride and a titanium nitride-titanium carbide combination, said titanium nitride-titanium carbide combination consisting of a first layer of titanium nitride and a second layer of titanium carbide overlying said first layer of titanium nitride; and a fully dense coating of hafnium carbonitride, said coating being firmly and adherently bonded to said interlayer and said substrate, said hafnium carbonitride coating having an X-ray diffraction lattice parameter within the range of about 4.55 to 4.64 angstrom units.
Claim 30
Dependent Claim
27 words
A coated cemented carbide product as recited in claim 23 in which said interlayer is sufficiently thick so as to obtain complete surface coverage of the substrate.
Claim 31
Dependent Claim
28 words
A coated cemented carbide product as recited in claim 23 in which said interlayer has a thickness in the range of from about 0.1 microns to 10 microns.
Claim 32
Dependent Claim
27 words
A coated cemented carbide product as recited in claim 23 in which said interlayer has a thickness in the range of from about 0.1 to 5 microns.
Claim 33
Dependent Claim
27 words
A coated cemented carbide product as recited in claim 23 in which said interlayer has a thickness on the range of from about 1 to 2 microns.
Claim 34
Dependent Claim
25 words
A coated cemented carbide product as recited in claim 23 in which said hafnium carbonitride coating has a thickness of approximately 1 to 10 microns.
Claim 35
Dependent Claim
20 words
A coated cemented carbide product as recited in claim 23 in which the interlayer is a layer of hafnium nitride.
Claim 36
Dependent Claim
20 words
A coated cemented carbide product as recited in claim 23 in which the interlayer is a layer of titanium nitride.
Claim 37
Dependent Claim
20 words
A coated cemented carbide product as recited in claim 23 in which the interlayer is a layer of zirconium nitride.
Claim 38
Dependent Claim
58 words
A coated cemented carbide product as recited in claim 23 in which the interlayer consists of a first layer of titanium nitride approximately 1/2 to 1 micron in thickness and a second layer of titanium carbide overlying said first layer of titanium nitride, said second layer of titanium carbide having a thickness of approximately 1/2 to 1 micron.
Claim 39
Dependent Claim
96 words
A coated cemented carbide product comprising: a cemented carbide substrade comprised of WC--TiC--TaC--Co; an interlayer disposed on said substrate, said interlayer including a first layer of titanium nitride approximately 1 to 3 microns thick, and a second layer of titanium carbide approximately 1/2 to 1 micron thick overlying said titanium nitride layer; and a fully dense coating of hafnium carbonitride about 5 microns thick which is firmly and adherently bonded to said interlayer and said substrate, said hafnium carbonitride coating having an X-ray diffraction lattice parameter within the range of about 4.55 to 4.64 angstrom units.
Claim 40
Dependent Claim
96 words
A coated cemented carbide product comprising: a cemented carbide substrade comprised of WC--TiC--TaC--Co; an interlayer disposed on said substrate, said interlayer including a first layer of titanium nitride approximately 1 to 3 microns thick, and a second layer of titanium carbide approximately 1/2 to 1 micron thick overlying said titanium nitride layer; and a fully dense coating of hafnium carbonitride about 5 microns thick which is firmly and adherently bonded to said interlayer and said substrate, said hafnium carbonitride coating having an X-ray diffraction lattice parameter within the range of about 4.55 to 4.64 angstrom units.
Claim 41
Dependent Claim
73 words
A coated cemented carbide product comprising: a cemented carbide substrate comprised of WC--TiC--TaC--Co; an interlayer disposed on said substrate, said interlayer being selected from the group consisting of zirconium nitride, hafnium carbide and titanium carbide; and a fully dense coating of zirconium carbonitride firmly and adherently bonded to said interlayer and said substrate, said zirconium carbonitride coating having an X-ray diffraction lattice parameter within the range of about 4.58 to 4.67 angstrom units.
Claim 42
Dependent Claim
73 words
A coated cemented carbide product comprising: a cemented carbide substrate comprised of WC--TiC--TaC--Co; an interlayer disposed on said substrate, said interlayer being selected from the group consisting of zirconium nitride, hafnium carbide and titanium carbide; and a fully dense coating of zirconium carbonitride firmly and adherently bonded to said interlayer and said substrate, said zirconium carbonitride coating having an X-ray diffraction lattice parameter within the range of about 4.58 to 4.67 angstrom units.
Claim 43
Dependent Claim
27 words
A coated cemented carbide product as recited in claim 34 in which said interlayer is sufficiently thick so as to obtain complete surface coverage of the substrate.
Claim 44
Dependent Claim
28 words
A coated cemented carbide product as recited in claim 34 in which said interlayer has a thickness in the range of from 0.1 microns to about 10 microns.
Claim 45
Dependent Claim
26 words
A coated cemented carbide product as recited in claim 34 in which said interlayer has a thickness in the range of about 1 to 2 microns.
Claim 46
Dependent Claim
26 words
A coated cemented carbide product as recited in claim 34 in which said interlayer has a thickness in the range of about 0.1 to 5 microns.
Claim 47
Dependent Claim
27 words
A coated carbide product as recited in claim 34 in which said zirconium carbonitride coating has a thickness in the range of approximately 1 to 10 microns.
Claim 48
Dependent Claim
17 words
A coated cemented carbide product as recited in claim 34 in which the interlayer is zirconium nitride.
Claim 49
Dependent Claim
17 words
A coated cemented carbide product as recited in claim 34 in which the interlayer is titanium carbide.
Claim 50
Dependent Claim
17 words
A coated cemented carbide product as recited in claim 34 in which the interlayer is hafnium carbide.
Claim 51
Dependent Claim
76 words
A coated cemented carbide product comprising: a cemented carbide substrate comprised of WC--8% TiC--11.5% TaC--8.5% Co; an interlayer of zirconium nitride less than 1 micron thick disposed on said substrate; and a fully dense coating of zirconium carbonitride approximately 4 to 5 microns thick which is firmly and adherently bonded to said interlayer and said substrate, said zirconium carbonitride coating having an X-ray diffraction lattice parameter within the range of about 4.58 to 4.67 angstrom units.
Claim 52
Dependent Claim
76 words
A coated cemented carbide product comprising: a cemented carbide substrate comprised of WC--8% TiC--11.5% TaC--8.5% Co; an interlayer of zirconium nitride less than 1 micron thick disposed on said substrate; and a fully dense coating of zirconium carbonitride approximately 4 to 5 microns thick which is firmly and adherently bonded to said interlayer and said substrate, said zirconium carbonitride coating having an X-ray diffraction lattice parameter within the range of about 4.58 to 4.67 angstrom units.
Claim 53
Dependent Claim
73 words
A coated cemented carbide product comprising: a cemented carbide substrate comprised of WC--8% TiC--11.5% TaC--8.5% Co; an interlayer of titanium carbide approximately 1.4 microns thick disposed on said substrate; and a fully dense coating of zirconium carbonitride approximately 4 microns thick which is firmly and adherently bonded to said interlayer and said substrate, said zirconium carbonitride coating having an X-ray diffraction lattice parameter within the range of about 4.58 to 4.67 angstrom units.
Claim 54
Dependent Claim
73 words
A coated cemented carbide product comprising: a cemented carbide substrate comprised of WC--8% TiC--11.5% TaC--8.5% Co; an interlayer of titanium carbide approximately 1.4 microns thick disposed on said substrate; and a fully dense coating of zirconium carbonitride approximately 4 microns thick which is firmly and adherently bonded to said interlayer and said substrate, said zirconium carbonitride coating having an X-ray diffraction lattice parameter within the range of about 4.58 to 4.67 angstrom units.
References Cited (Backward Citations)
US3787223A
Cited
US3784402A
Cited
US3807008A
Cited
US3640689A
Cited
US3837896A
Cited
US4101703A
Cited
US4101703B1
Cited
US3854991A
Cited
US3874900A
Cited
US3964937A
Cited
US4035541A
Cited
US4150195A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-05-18 | 1984-11-17 | 1985-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-18 | 1988-11-17 | 1989-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-18 | 1992-11-17 | 1993-05-19 | $7700.00 | Window Closed / Lapsed |