Patent CH444808A successfully refreshed from Google Patents.
Patent US5139824A successfully refreshed from Google Patents.
US5139824A
Expired / Lapsed
US
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Method of coating complex substrates
Assignee: Liburdi Engineering Ltd
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Filing: 1990-08-27
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Granted: 1992-08-18
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Expires: 2010-08-27
Abstract
Abstract The present invention is designed to improve a method of deposition of coatings upon a metal or alloy substrate. The coating comprises aluminum or aluminide material interdiffused with a transition metal deposited by chemical vapor deposition which utilizes organometallic precursors to facilitate the deposition of the transition metal. The improvement permits better control of the process and permits coating of complex substrates including those with internal passages or holes. In the embodiment involving a first deposition of aluminum or aluminide coating, applicants have achieved deposition thereon of the transition metal. Platinum is the preferred transition metal to be used in the subject method. A product is taught. This product can be a component from a gas turbine engine.
Inventors
- 👤 Joseph Liburdi
- 👤 Paul Lowden
- 👤 Alina Aguero
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:06
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/06; C23C16/18; C23C26/00; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/941; Y10T; Y10T428/00; Y10T428/12; Y10T428/12458; Y10T428/12493; Y10T428/12736; Y10T428/1275; Y10T428/12771; Y10T428/12861; Y10T428/12868; Y10T428/12875; Y10T428/12889
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
60 words
A method for coating complex substrates comprising: (a) depositing a transition metal or mixture thereof on a substrate by a chemical vapor deposition technique using an organometallic compound; (b) depositing aluminum or an aluminide or mixture thereof on the coating of step (a); (c) interdiffusing the deposited material; and (d) recovering a coated article with the deposited materials adhered thereto.
Claim 2
Independent Claim
60 words
A method for coating complex substrates comprising: (a) depositing a transition metal or mixture thereof on a substrate by a chemical vapor deposition technique using an organometallic compound; (b) depositing aluminum or an aluminide or mixture thereof on the coating of step (a); (c) interdiffusing the deposited material; and (d) recovering a coated article with the deposited materials adhered thereto.
Claim 3
Independent Claim
60 words
A method for coating a complex substrate comprising: (a) depositing aluminum or an aluminide or mixture thereof on the substrate; then (b) depositing a transition metal or mixture thereof on the coating of step (a) by chemical vapor deposition using an organometallic compound; (c) interdiffusing the deposited material; and (d) recovering a coated article with the deposited materials adhered thereto.
Claim 4
Independent Claim
60 words
A method for coating a complex substrate comprising: (a) depositing aluminum or an aluminide or mixture thereof on the substrate; then (b) depositing a transition metal or mixture thereof on the coating of step (a) by chemical vapor deposition using an organometallic compound; (c) interdiffusing the deposited material; and (d) recovering a coated article with the deposited materials adhered thereto.
Claim 5
Dependent Claim
15 words
The method according to claim 2, wherein the organometallic compound is a transition metal complex.
Claim 6
Dependent Claim
24 words
The method according to claim 3, wherein the transition metal complex is Pt(COD)Me 2 where COD is cyclooctadiene and Me is CH 3 .
Claim 7
Dependent Claim
27 words
The method according to claim 2, wherein the transition metal deposited on the metal or alloy is interdiffused before the deposition of the aluminum or aluminide material.
Claim 8
Dependent Claim
19 words
The method according to claim 5, wherein the interdiffusion is achieved by heating the material deposited on the substrate.
Claim 9
Dependent Claim
13 words
The method according to claim 2, wherein the deposited materials are interdiffused together.
Claim 10
Dependent Claim
15 words
The method according to claim 7, wherein the interdiffusion occurs by heating the deposited material.
Claim 11
Dependent Claim
22 words
The method according to claim 2, wherein the transition metal is deposited at a temperature between about 100° and about 1200° C.
Claim 12
Dependent Claim
21 words
The method according to claim 2, wherein the aluminum or aluminide is deposited at a temperature about 100° and 1200° C.
Claim 13
Dependent Claim
29 words
The method according to claim 2, wherein the transition metal is selected from Group IIIB, IVB, VB, VIB, VIIB, VIII, IB and IVA of The Periodic Table of Elements.
Claim 14
Dependent Claim
30 words
The method according to claim 11, wherein the transition metal is selected from the group platinum, rhodium, palladium, yttrium, scandium, zirconium, hafnium, lanthanum, chromium, tantalum, rhenium, manganese, titanium and gold.
Claim 15
Dependent Claim
12 words
The method according to claim 2, wherein the transition metal is platinum.
Claim 16
Dependent Claim
17 words
The method according to claim 2, wherein the aluminide is a nickel, cobalt, iron or titanium aluminide.
Claim 17
Dependent Claim
40 words
The method according to claim 2, wherein the aluminum or aluminide coating is applied by pack cementation, gas phase chemical vapor deposition from either a pack source or any other aluminum bearing gas, ion vapor deposition, electroplating or electrophoretic deposition.
Claim 18
Dependent Claim
24 words
The method according to claim 2, wherein the transition metal is platinum and the deposited material consists of about 90% of that transition metal.
Claim 19
Dependent Claim
13 words
The method according to claim 2, wherein the substrate is a turbine component.
Claim 20
Dependent Claim
20 words
The method according to claim 2, wherein the interdiffusion occurs at a temperature between about 100° to about 1200° C.
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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) | 1995-08-18 | 1996-02-17 | 1996-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-18 | 2000-02-17 | 2000-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-18 | 2004-02-17 | 2004-08-18 | $7700.00 | Window Closed / Lapsed |