US4965140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite coatings on refractory substrates
Assignee: Verizon Laboratories Inc
•
Filing: 1988-06-14
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Granted: 1990-10-23
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Expires: 2008-06-14
Abstract
Abstract A wear resistant article, such as a cutting tool. A hard refractory substrate is coated with a composite refractory coating having at least two phases. The first phase is a continuous nitride matrix layer 0.1-20 microns thick of nitrides of Si, B, Al, Y, Ti, Zr, Hf, V, Nb, Ta, Mo, or W. At least one discontinuous second or additional phase of nitrides of Si, B, Al, Y, Ti, Zr, Hf, V, Nb, Ta, Mo, or W, or solid solutions thereof, is dispersed as discrete particles within the matrix layer. The additional phase material is different from the matrix material.
Inventors
- 👤 Vinod K. Sarin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:19
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/22; C23C16/30; C23C16/40; C23C16/405; C23C16/403; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/252; Y10T428/26; Y10T428/263; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
119 words
A wear resistant article comprising a hard refractory substrate body and a fully dense, adherent, wear resistant, composite refractory layer on the substrate body, the composite refractory layer having at least two phases and comprising: a continuous nitride layer about 0.1-20 microns thick comprising at least one first refractory nitride of Si, B, Al, Y, Ti, Zr, Hf, V, Nb, Ta, Mo, or W; and at least one discontinuous additional phase dispersed as discrete particles within the nitride layer, and comprising at least one second refractory nitride of Si, B, Al, Y, Ti, Zr, Hf, V, Nb, Ta, Mo, or W; wherein the at least one second refractory nitride is different from the at least one first refractory nitride.
Claim 2
Dependent Claim
119 words
A wear resistant article comprising a hard refractory substrate body and a fully dense, adherent, wear resistant, composite refractory layer on the substrate body, the composite refractory layer having at least two phases and comprising: a continuous nitride layer about 0.1-20 microns thick comprising at least one first refractory nitride of Si, B, Al, Y, Ti, Zr, Hf, V, Nb, Ta, Mo, or W; and at least one discontinuous additional phase dispersed as discrete particles within the nitride layer, and comprising at least one second refractory nitride of Si, B, Al, Y, Ti, Zr, Hf, V, Nb, Ta, Mo, or W; wherein the at least one second refractory nitride is different from the at least one first refractory nitride.
Claim 3
Dependent Claim
19 words
An article according to claim 1 wherein the additional phase is substantially evenly dispersed within the continuous nitride layer.
Claim 4
Dependent Claim
30 words
An article according to claim 1 wherein the composite refractory layer is a stratified layer in which portions having at least two phases alternate with single phase continuous nitride portions.
Claim 5
Dependent Claim
20 words
An article according to claim 1 wherein the first refractory nitride comprises AlN and the second refractory nitride comprises ZrN.
Claim 6
Dependent Claim
20 words
An article according to claim 1 wherein the first refractory nitride comprises ZrN and the second refractory nitride comprises YN.
Claim 7
Dependent Claim
20 words
An article according to claim 1 wherein the first refractory nitride comprises YN and the second refractory nitride comprises ZrN.
Claim 8
Dependent Claim
23 words
An article according to claim 1 wherein the first refractory nitride comprises Si 3 N 4 and the second refractory nitride comprises TiN.
Claim 9
Dependent Claim
20 words
An article according to claim 1 wherein the first refractory nitride comprises AlN and the second refractory nitride comprises TiN.
Claim 10
Dependent Claim
42 words
An article according to claim 1 wherein the at least one additional phase comprises the at least one second refractory nitride and at least one third refractory nitride of Si, B, Al, Y, Ti, Zr, Hf, V, Nb, Ta, Mo, or W.
Claim 11
Dependent Claim
26 words
An article according to claim 1 wherein the first refractory nitride comprises AlN, the second refractory nitride comprises ZrN, and the third refractory nitride comprises YN.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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