Patent US4594103A successfully refreshed from Google Patents.
US4594103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Powdered nickel-chromium based material for thermal spraying
Assignee: ECG Immobilier SA
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Filing: 1984-06-20
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Granted: 1986-06-10
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Expires: 2004-06-20
Abstract
Abstract The material according to the present invention comprises a self-flowing alloy containing particularly from 18 to 35% by weight of chromium as well as fractions of boron and silicon in a ratio of 3:4. The alloy also contains from 0.1 to 25.0% by weight of iron, except for the range from 1.5 to 6. The layers obtained by means of said material exhibit a very high resistance to temperatures, particularly also to corrosion and oxidation.
Inventors
- 👤 Wolfgang Simm
- 👤 Hans-Theo Steine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:31
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/3033; B23K35/304; C; C23; C23C; C23C4/00; C23C4/04; C23C4/06; C23C4/067
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
78 words
A powdered spraying material for producing, by thermal spraying and fusing, protective coatings resistant to erosion, corrosion and oxidation, said material comprising a self-fluxing nickel-chromium-based alloy, characterized in that the alloy has the following composition, in percent by weight: ______________________________________
C 0.01-2.0
Fe 0.1-25.0 except the range
of 1.5-6
B 0.5-4.5
Si 0.6-5.5
Cr 18.0-35.0
Ni remainder,
______________________________________ the boron content being equal to 75 percent of the respective silicon content, with a maximum deviation of ±10 percent.
Claim 2
Dependent Claim
78 words
A powdered spraying material for producing, by thermal spraying and fusing, protective coatings resistant to erosion, corrosion and oxidation, said material comprising a self-fluxing nickel-chromium-based alloy, characterized in that the alloy has the following composition, in percent by weight: ______________________________________
C 0.01-2.0
Fe 0.1-25.0 except the range
of 1.5-6
B 0.5-4.5
Si 0.6-5.5
Cr 18.0-35.0
Ni remainder,
______________________________________ the boron content being equal to 75 percent of the respective silicon content, with a maximum deviation of ±10 percent.
Claim 3
Dependent Claim
30 words
A spraying material as claimed in claim 1, characterized in that the alloy further contains, in percent by weight, up to 2.0 of niobium and/or up to 15.0 of molybdenum.
Claim 4
Dependent Claim
25 words
A spraying material as claimed in claim 1 or 2, characterized in that the silicon content is comprised between 1.8 and 4.5 percent by weight.
Claim 5
Dependent Claim
29 words
A spraying material as claimed in one of the claims 1, 2 or 3, characterized in that the chromium content is comprised between 20.0 and 28.0 percent by weight.
Claim 6
Dependent Claim
30 words
A spraying material as claimed in one of the claims 1, 2, 3, or 4, characterized in that the iron content is comprised between 6.0 and 20.0 percent by weight.
Claim 7
Dependent Claim
30 words
A spraying material as claimed in one of the claims 1, 2, 3, or 4, characterized in that the iron content is comprised between 0.5 and 1.5 percent by weight.
Claim 8
Dependent Claim
23 words
A spraying material as claimed in claim 5, characterized in that the molybdenum content is comprised between 0.5 and 7.0 percent by weight.
Claim 9
Dependent Claim
23 words
A spraying material as claimed in claim 6, characterized in that the molybdenum content is comprised between 9.0 and 14.0 percent by weight.
Claim 10
Dependent Claim
26 words
A spraying material as claimed in any of the preceding claims, characterized in that the carbon content is comprised between 0.01 and 0.3 percent by weight.
Claim 11
Dependent Claim
27 words
A spraying material as claimed in any of claims 1 to 8 characterized in that the carbon content is comprised between 0.5 and 1.5 percent by weight.
Claim 12
Dependent Claim
23 words
A spraying material as claimed in claim 10, characterized in that the niobium content is comprised between 0.1 and 1.0 percent by weight.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-06-09 | 1989-12-09 | 1990-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-09 | 1993-12-09 | 1994-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-09 | 1997-12-09 | 1998-06-10 | $7700.00 | Window Closed / Lapsed |