Patent US5272014A successfully refreshed from Google Patents.
US5272014A
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Wear-resistant coating for substrate and method for applying
Assignee: Dr-Ing Toni Leyendecker
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Filing: 1989-07-21
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Granted: 1993-12-21
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Expires: 2009-07-21
Abstract
Abstract A multi-component, metal-containing, wear-resistant coating which is not homogeneous. The coating has a difference of a metallic element concentration of at least about 2 atom percent between the edges of the coating surface and the coating surface remote from the edge. Non-homogeneous coatings of the invention are surprisingly wear-resistant compared to homogeneous coatings. The invention also relates to a method of applying the coatings of the invention by a PVC-process or a plasma-CVD-process wherein the electrical potential difference between the substrate and the ionized coating material is selected to enhance the inhomogeneity of the coating.
Inventors
- 👤 Toni Leyendecker
- 👤 Stefan Esser
- 👤 Oliver Lemmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:30
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/06; C23C14/0641; C23C14/22; C23C14/24; C23C14/32; C23C16/00; C23C16/22; C23C16/30; C23C16/44; C23C16/50; C23C16/505; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
50 words
A non-homogenous, multi-component, wear-resistant PVD- or Plasma-CVD-coating containing at least two metallic elements on a substrate having an edge subjected to wear, said coating having a concentration difference at the edge of at least about 2 atom percent of one metallic element compared to the coating remote from the edge.
Claim 2
Dependent Claim
50 words
A non-homogenous, multi-component, wear-resistant PVD- or Plasma-CVD-coating containing at least two metallic elements on a substrate having an edge subjected to wear, said coating having a concentration difference at the edge of at least about 2 atom percent of one metallic element compared to the coating remote from the edge.
Claim 3
Dependent Claim
23 words
The coating of claim 1 further containing a component selected from the group consisting of nitrogen, carbon, boron, silicon, oxygen, and blends thereof.
Claim 4
Dependent Claim
10 words
The coating of claim 1 comprising aluminium, titanium, and nitrogen.
Claim 5
Dependent Claim
10 words
The coating of claim 1 comprising zirconium, titanium, and nitrogen.
Claim 6
Dependent Claim
12 words
The coating of claim 1 wherein the substrate comprises high speed steel.
Claim 7
Dependent Claim
11 words
The coating of claim 1 wherein the substrate comprises a cermet.
Claim 8
Dependent Claim
10 words
The coating of claim 1 wherein the substrate comprises ceramic.
Claim 9
Dependent Claim
27 words
The coating of claim 1, the substrate further comprising a primer layer, said primer layer selected from the group consisting of Ti-N, Ti-C-N, Ti-C, and blends thereof.
Claim 10
Dependent Claim
11 words
The coating of claim 1 wherein the substrate comprises hard metal.
Claim 11
Dependent Claim
12 words
The coating of claim 9 wherein the hard metal is tungsten carbide.
Claim 12
Independent Claim
114 words
A method for coating a substrate having an edge subject to wear with a non-homogenous, multi-component, metal-containing, wear-resistant coating by a PVD- or Plasma-CVD-process, said method comprising a) forming a plasma comprising ions of at least two metals in a chamber in which the pressure is subatmospheric; b) urging the plasma toward the substrate to be deposited thereon by maintaining a difference between the electrical potential of the substrate and the electrical potential of the plasma sufficient to deposit on the substrate a non-homogeneous coating of plasma having a metal concentration of one of the metals at the edge at least about 2 atom percent different from the metal concentration remote from the edge.
Claim 13
Independent Claim
114 words
A method for coating a substrate having an edge subject to wear with a non-homogenous, multi-component, metal-containing, wear-resistant coating by a PVD- or Plasma-CVD-process, said method comprising a) forming a plasma comprising ions of at least two metals in a chamber in which the pressure is subatmospheric; b) urging the plasma toward the substrate to be deposited thereon by maintaining a difference between the electrical potential of the substrate and the electrical potential of the plasma sufficient to deposit on the substrate a non-homogeneous coating of plasma having a metal concentration of one of the metals at the edge at least about 2 atom percent different from the metal concentration remote from the edge.
Claim 14
Dependent Claim
17 words
The method of claim 11, wherein the plasma consists of ionized metal atoms and ionized metalloid atoms.
Claim 15
Dependent Claim
25 words
The method of claim 11, wherein the plasma further comprises a rare gas selected from the group consisting of neon, argon, xenon, and blends thereof.
Claim 16
Dependent Claim
21 words
The method of claim 11, further comprising introducing a component of the plasma into the vacuum chamber as a reactive gas.
Claim 17
Dependent Claim
45 words
The method of claim 11 wherein a PVD process is utilized, the plasma is maintained at a temperature above about 150° to 550° C., and the potential of the substrate is between about 50 V and 150 V compared to the potential of the plasma.
Claim 18
Dependent Claim
12 words
The method of claim 15, wherein the potential is about 100 V.
Claim 19
Dependent Claim
43 words
The method of claim 11, wherein a Plasma-CVD-process is utilized, the plasma is maintained at a temperature above about 150° to 550° C., and the potential of the substrate is between about 100 and 2000 V lower than the potential of the plasma.
Claim 20
Dependent Claim
25 words
The method of claim 17 wherein the potential of the substrate is between about 600 and 2000 V lower than the potential of the plasma.
References Cited (Backward Citations)
No citation records indexed.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-12-20 | 1997-06-21 | 1997-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-12-20 | 2001-06-21 | 2001-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-12-20 | 2005-06-21 | 2005-12-21 | $7700.00 | Window Closed / Lapsed |