US4556607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface coatings and subcoats
Assignee: Individual
•
Filing: 1984-03-28
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Granted: 1985-12-03
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Expires: 2004-03-28
Abstract
Abstract Coatings are disclosed (a) which are useful by themselves to substantially improve the surface properties of substrates to which they are applied and (b) which are useful as subcoats to substantially improve the bonding of coatings of nitrides, carbides and borides of titanium, hafnium and zirconium to such substrates. The coatings which are disclosed are novel materials characterized by a microcrystalline, single-phase, solid solution structure comprising: (a) about 20 to 70% by weight of at least one element from the group consisting of cobalt and nickel; (b) about 8 to 35% by weight of chromium; (c) about 3 to 20% by weight of at least one element from the group consisting of molybdenum and tungsten; and (d) about 0.5 to 10% by weight of at least one element from the group consisting of carbon, nitrogen and boron.
Inventors
- 👤 Suri A. Sastri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:58
CPC Classifications
C; C23; C23C; C23C28/00; C23C28/04; C23C14/00; C23C14/06; C23C14/14; C23C14/16; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12576; Y10T428/12771; Y10T428/12861; Y10T428/12937
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
147 words
A multilayer coating for a substrate, said coating comprising: (A) a subcoat layer which is bonded to said substrate, said subcoat being characterized by having a microcrystalline, single-phase, solid solution structure and having a composition comprising: (a) about 20 to 70% by weight of at least 1 element from the group consisting of cobalt and nickel; (b) about 8 to 35% by weight of chromium; (c) about 3 to 20% by weight of at least one element from the group consisting of molybdenum and tungsten; and (d) about 0.5 to 10% by weight of at least one element from the group consisting of carbon, nitrogen and boron; and (B) an outer coating layer bonded to said subcoat, said outer coating comprising at least 50% by weight of a material selected from the group consisting of nitrides, carbides and borides of titanium, hafnium and zirconium and combinations thereof.
Claim 2
Dependent Claim
147 words
A multilayer coating for a substrate, said coating comprising: (A) a subcoat layer which is bonded to said substrate, said subcoat being characterized by having a microcrystalline, single-phase, solid solution structure and having a composition comprising: (a) about 20 to 70% by weight of at least 1 element from the group consisting of cobalt and nickel; (b) about 8 to 35% by weight of chromium; (c) about 3 to 20% by weight of at least one element from the group consisting of molybdenum and tungsten; and (d) about 0.5 to 10% by weight of at least one element from the group consisting of carbon, nitrogen and boron; and (B) an outer coating layer bonded to said subcoat, said outer coating comprising at least 50% by weight of a material selected from the group consisting of nitrides, carbides and borides of titanium, hafnium and zirconium and combinations thereof.
Claim 3
Dependent Claim
20 words
A coating as defined in claim 1 wherein said outer coating comprises at least 75% by weight of said material.
Claim 4
Dependent Claim
22 words
A coating as defined in claim 1 wherein said composition of said subcoat comprises about 20 to 70% by weight of cobalt.
Claim 5
Dependent Claim
14 words
A coating as defined in claim 1 wherein said substrate is a ferrous metal.
Claim 6
Dependent Claim
14 words
A coating as defined in claim 3 wherein said substrate is a ferrous metal.
Claim 7
Dependent Claim
17 words
A coating as defined in claim 1 wherein said material of said outer coating is titanium nitride.
Claim 8
Dependent Claim
17 words
A coating as defined in claim 3 wherein said material of said outer coating is titanium nitride.
Claim 9
Dependent Claim
20 words
A coating as defined in claim 1 wherein said outer coating comprises about 0 to 25% by weight of niobium.
Claim 10
Dependent Claim
38 words
A coating as defined in claim 1 wherein said subcoat is composed of a plurality of sublayers of varying compositions, said varying compositions being within the scope of said composition for said subcoat as defined in claim 1.
Claim 11
Dependent Claim
14 words
A coating as defined in claim 7 wherein said substrate is a ferrous metal.
Claim 12
Dependent Claim
12 words
A coating as defined in claim 1 wherein said substrate is titanium.
Claim 13
Dependent Claim
13 words
A coating as defined in claim 1 wherein said substrate is tungsten carbide.
Claim 14
Dependent Claim
12 words
A coating as defined in claim 1 wherein said substrate is aluminum.
Claim 15
Dependent Claim
12 words
A coating as defined in claim 1 wherein said substrate is beryllium.
Claim 16
Dependent Claim
12 words
A coating as defined in claim 1 wherein said substrate is copper.
Claim 17
Dependent Claim
92 words
A coating for a substrate, said coating being characterized by having a microcrystalline, single-phase, solid solution structure and a composition comprising: (a) about 20 to 70% by weight of at least one element from the group consisting of cobalt and nickel; (b) about 8 to 35% by weight of chromium; (c) about 3 to 20% by weight of at least 1 element from the group consisting of molybdenum and tungsten; and (d) about 0.5 to 10% by weight of at least 1 element from the group consisting of carbon, nitrogen and boron.
Claim 18
Dependent Claim
92 words
A coating for a substrate, said coating being characterized by having a microcrystalline, single-phase, solid solution structure and a composition comprising: (a) about 20 to 70% by weight of at least one element from the group consisting of cobalt and nickel; (b) about 8 to 35% by weight of chromium; (c) about 3 to 20% by weight of at least 1 element from the group consisting of molybdenum and tungsten; and (d) about 0.5 to 10% by weight of at least 1 element from the group consisting of carbon, nitrogen and boron.
Claim 19
Dependent Claim
18 words
A coating as defined in claim 16 wherein said composition comprises 20 to 70% by weight of cobalt.
Claim 20
Dependent Claim
37 words
A coating as defined in 16 wherein about 0 to 80% by volume of a material selected from the group consisting of nitrides, carbides and borides of titanium, hafnium and zirconium and combinations thereof is dissolved therein.
Claim 21
Dependent Claim
37 words
A coating as defined in 16 wherein about 0 to 80% by volume of a material selected from the group consisting of nitrides, carbides and borides of titanium, hafnium and zirconium and combinations thereof is dissolved therein.
Claim 22
Dependent Claim
22 words
A coating as defined in claim 18 wherein said composition has dissolved therein about 30 to 60% by volume of said material.
Claim 23
Dependent Claim
13 words
A coating as defined in claim 18 wherein said material is titanium nitride.
Claim 24
Dependent Claim
13 words
A coating as defined in claim 19 wherein said material is titanium nitride.
Claim 25
Dependent Claim
47 words
A coating as defined in claim 16 having a platinum-like appearance, said composition comprising by weight about 30% chromium, about 4% aluminum, about 2% silicon, about 3% nickel, about 3% titanium, about 16% tungsten, about 2% molybdenum, about 2% carbon, about 3% nitrogen and about 35% cobalt.
Claim 26
Dependent Claim
44 words
A coating as defined in claim 18 which is bonded to an outer coating, said outer coating comprising at least 50% by weight of a material selected from the group consisting of nitrides, carbides and borides of titanium, hafnium and zirconium and combinations thereof.
Claim 27
Dependent Claim
14 words
A coating as defined in claim 16 wherein said substrate is a ferrous metal.
Claim 28
Dependent Claim
14 words
A coating as defined in claim 18 wherein said substrate is a ferrous metal.
Claim 29
Dependent Claim
12 words
A coating as defined in claim 16 wherein said substrate is titanium.
Claim 30
Dependent Claim
13 words
A coating as defined in claim 16 wherein said substrate is tungsten carbide.
Claim 31
Dependent Claim
12 words
A coating as defined in claim 16 wherein said substrate is aluminum.
Claim 32
Dependent Claim
12 words
A coating as defined in claim 16 wherein said substrate is beryllium.
Claim 33
Dependent Claim
12 words
A coating as defined in claim 16 wherein said substrate is copper.
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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) | 1988-12-02 | 1989-06-03 | 1989-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-02 | 1993-06-03 | 1993-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-02 | 1997-06-03 | 1997-12-03 | $7700.00 | Window Closed / Lapsed |