Patent US5032689A successfully refreshed from Google Patents.
US4529631A
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Method of depositing a metallic and/or ceramic protective layer on a substrate
Assignee: ECG Immobilier SA
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Filing: 1983-03-17
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Granted: 1985-07-16
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Expires: 2003-03-17
Abstract
Abstract The method comprises the steps of depositing, by thermal spraying of pulverulent materials, portions of layer in the shape of juxtaposed, adjacent strips having each a height corresponding substantially to the thickness of the layer to be formed. Each deposited portion of the layer is locally cooled so as to maintain the temperature differential between the substrate and the layer at a value lower than 100° C., preferably lower than 60° or 50° C. It is possible thereby to deposit layers up to 3 mm thick and to obtain very high density layers even from high melting point metals or from ceramic materials.
Inventors
- 👤 Walter Neudahm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:46
CPC Classifications
C; C23; C23C; C23C4/00; C23C4/12
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
113 words
A method of depositing a metallic and/or ceramic protective layer on a substrate by thermal projection of powdery materials, characterized in that portions of a layer are deposited in succession in the form of adjacent juxtaposed strips, each having a height which corresponds substantially with the thickness of the layer which is to be formed, the substrate being kept during the process of deposition at a temperature less than 300° C. and the difference in temperature between the substrate and a point on a portion of deposited layer, measured at the latest before the depositing of an adjacent portion of layer in the vicinity of the said point, being kept below 100° C.
Claim 2
Independent Claim
113 words
A method of depositing a metallic and/or ceramic protective layer on a substrate by thermal projection of powdery materials, characterized in that portions of a layer are deposited in succession in the form of adjacent juxtaposed strips, each having a height which corresponds substantially with the thickness of the layer which is to be formed, the substrate being kept during the process of deposition at a temperature less than 300° C. and the difference in temperature between the substrate and a point on a portion of deposited layer, measured at the latest before the depositing of an adjacent portion of layer in the vicinity of the said point, being kept below 100° C.
Claim 3
Dependent Claim
17 words
A method as in claim 1, characterized in that each portion of layer deposited is cooled locally.
Claim 4
Dependent Claim
50 words
A method as in claim 1, characterized in that the temperature is controlled by cooling such that the temperature of the substrate does not exceed 200° C. and the said difference in temperature between the substrate and a point on a portion of deposited layer does not exceed 60° C.
Claim 5
Dependent Claim
50 words
A method as in claim 1, characterized in that the temperature is controlled by cooling such that the temperature of the substrate does not exceed 100° C. and the said difference in temperature between the substrate and a point on a portion of deposited layer does not exceed 50° C.
Claim 6
Independent Claim
35 words
A method as in claims 2, 3 or 4, characterized in that the temperature is controlled by cooling by means of at least one device including outlet nozzles for cooling fluid, directed in a fan.
Claim 7
Independent Claim
38 words
A method as in claims 2, 3 or 4, characterized in that the temperature is controlled by cooling by means of at least one device including outlet nozzles for cooling fluid, arranged in an annular or linear manner.
Claim 8
Independent Claim
35 words
A method as in claims 2, 3 or 4, characterized in that the temperature is controlled by cooling by means of at least one device including outlet nozzles for cooling fluid, distributed over an area.
Claim 9
Independent Claim
35 words
A method as in claims 2, 3 or 4, characterized in that the temperature is controlled by employing a cooling fluid selected from the group consisting of liquid carbon dioxide, water, nitrogen and compressed air.
Claim 10
Independent Claim
42 words
A method as in claims 2, 3 or 4, characterized in that the temperature is controlled by employing a combination of cooling devices which employ different cooling fluids selected from the group consisting of water, liquid carbon dioxide, nitrogen and compressed air.
References Cited (Backward Citations)
GB657300A
Cited
BE735032A
Cited
FR2224991A5
Cited
FR2347111A1
Cited
US4191791A
Cited
US4302482A
Cited
US4279709A
Cited
US4457948A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-15 | 1989-01-14 | 1989-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-15 | 1993-01-14 | 1993-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-15 | 1997-01-14 | 1997-07-16 | $7700.00 | Window Closed / Lapsed |