Patent US5135801A successfully refreshed from Google Patents.
US5135801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diffusion barrier coating material
Assignee: Sandvik AB
•
Filing: 1988-06-13
•
Granted: 1992-08-04
•
Expires: 2008-06-13
Abstract
Abstract A coated body consisting of a substrate that can be decarburized during a carbide, nitride or carbonitride coating process comprising a first (innermost) carbon diffusion retarding coating of MetCO, MetCON, MetON adjacent to the substrate and a second (next innermost) wear resistant coating of MetC, MetN and/or MetCN, where Met is Ti, Hf, V, Zr, Si, B or other metals of subgroup 3-7 of the periodic table of the elements, or a mixture thereof. The intermediate coating has been found beneficial in order to reduce or even eliminate the formation of eta phase in the substrate.
Inventors
- 👤 Asa K. Nystrom
- 👤 Jan N. Lindstrom
- 👤 Mats E. C. Sjostrand
- 👤 Leif E. A. Akesson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:22
CPC Classifications
C; C23; C23C; C23C8/00; C23C8/06; C23C8/08; C23C8/24; C23C28/00; C23C28/04; C23C28/044; C23C16/00; C23C16/22; C23C16/30; C23C16/308; C23C16/32; C23C16/34; C23C16/36; C23C30/00; C23C30/005; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/24975; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/30
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
86 words
Coated body consisting of a substrate that can be decarburized during a carbide, nitride or carbonitride coating process comprising a first (innermost) carbon diffusion barrier coating selected from the group consisting of MetCO, MetCON and MetON atop and adjacent to the substrate and a second (next innermost) wear resistant coating of at least one layer of MetC, MetN or MetCN, where Met is Ti, Hf, V, Zr, Si, B or other metals of subgroup 3-7 of the periodic table of the elements, or a mixture thereof.
Claim 2
Dependent Claim
86 words
Coated body consisting of a substrate that can be decarburized during a carbide, nitride or carbonitride coating process comprising a first (innermost) carbon diffusion barrier coating selected from the group consisting of MetCO, MetCON and MetON atop and adjacent to the substrate and a second (next innermost) wear resistant coating of at least one layer of MetC, MetN or MetCN, where Met is Ti, Hf, V, Zr, Si, B or other metals of subgroup 3-7 of the periodic table of the elements, or a mixture thereof.
Claim 3
Dependent Claim
26 words
Coated body according to claim 1 where the first coating adjacent to the substrate consists of MetC x O y N z where y>0.1 and x+y+z<1.3.
Claim 4
Dependent Claim
23 words
Coated body according to claim 1 where the first coating adjacent to the substrate is a solid solution of MetC, MetO and MetN.
Claim 5
Dependent Claim
14 words
Coated body according to claim 1 in which the body consists of cemented carbide.
Claim 6
Dependent Claim
23 words
Coated body according to claim 1 in which the first coating is 0.05-5 μm thick, and the second coating is >0.2 μm thick.
Claim 7
Dependent Claim
16 words
Coated body according to claim 1 in which the first coating is thinner than the second.
Claim 8
Dependent Claim
17 words
Coated body according to claim 1 in which the said body has a third coating of alumina.
Claim 9
Dependent Claim
17 words
Coated body according to claim 1 in which the said body has an outermost coating of TiN.
Claim 10
Dependent Claim
19 words
Coated body according to claim 1 in which the said body has an outer coating which contains multiple layers.
Claim 11
Dependent Claim
17 words
Coated body according to claim 1 in which the substrate has a binder phase enriched surface zone.
Claim 12
Dependent Claim
26 words
Coated body according to claim 2 wherein the first coating adjacent to the substrate consists of MetC x O y N z where y>0.2 and 0.8<x+y+z<1.05.
Claim 13
Dependent Claim
23 words
Coated body according to claim 5 in which the first coating is 0.1-2 μm thick and the second coating is 0.5-20 μm thick.
Claim 14
Dependent Claim
10 words
Coated body according to claim 3 wherein Met is Ti.
Claim 15
Dependent Claim
85 words
Coated body of a cemented carbide substrate that can be decarburized during a carbide, nitride or carbonitride coating process comprising a first (innermost) carbon diffusion barrier coating selected from the group consisting of MetCO, MetCON, and MetON adjacent to the substrate and a second (next innermost) wear resistant coating of at least one layer of MetC, MetN or MetCN, where Met is Ti, Hf, V, Zr, Si, B or other metals of subgroup 3-7 of the periodic table of the elements, or a mixture thereof.
Claim 16
Dependent Claim
85 words
Coated body of a cemented carbide substrate that can be decarburized during a carbide, nitride or carbonitride coating process comprising a first (innermost) carbon diffusion barrier coating selected from the group consisting of MetCO, MetCON, and MetON adjacent to the substrate and a second (next innermost) wear resistant coating of at least one layer of MetC, MetN or MetCN, where Met is Ti, Hf, V, Zr, Si, B or other metals of subgroup 3-7 of the periodic table of the elements, or a mixture thereof.
Claim 17
Dependent Claim
25 words
Coated body according to claim 14 wherein the first coating adjacent to the substrate comprises MetC x O y N z where y>0.1 and x+y+z<1.3.
Claim 18
Dependent Claim
10 words
Coated body according to claim 14 wherein Met is Ti.
References Cited (Backward Citations)
US2972556A
Cited
US4101703A
Cited
US4101703B1
Cited
US3911188A
Cited
US4018631A
Cited
US4035541A
Cited
US4341834A
Cited
US4282289A
Cited
US4525415A
Cited
US4490191A
Cited
US4447263A
Cited
US4693944A
Cited
US4746563A
Cited
JPS60248879A
Cited
US4734339A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-08-04 | 1996-02-03 | 1996-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-04 | 2000-02-03 | 2000-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-04 | 2004-02-03 | 2004-08-04 | $7700.00 | Window Closed / Lapsed |