EP0050282A1 - Alliage à base de nickel à protection contre la carburisation et la corrosion - Google Patents
Alliage à base de nickel à protection contre la carburisation et la corrosion Download PDFInfo
- Publication number
- EP0050282A1 EP0050282A1 EP81108147A EP81108147A EP0050282A1 EP 0050282 A1 EP0050282 A1 EP 0050282A1 EP 81108147 A EP81108147 A EP 81108147A EP 81108147 A EP81108147 A EP 81108147A EP 0050282 A1 EP0050282 A1 EP 0050282A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- content
- alloy
- aluminum
- corrosion
- oxygen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000956 alloy Substances 0.000 title claims abstract description 29
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 29
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 14
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 7
- 230000007797 corrosion Effects 0.000 title claims description 9
- 238000005260 corrosion Methods 0.000 title claims description 9
- 238000003763 carbonization Methods 0.000 title 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 11
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000010936 titanium Substances 0.000 claims abstract description 6
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 4
- 239000011651 chromium Substances 0.000 claims abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract 4
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract 2
- 229910017052 cobalt Inorganic materials 0.000 claims abstract 2
- 239000010941 cobalt Substances 0.000 claims abstract 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract 2
- 229910052742 iron Inorganic materials 0.000 claims abstract 2
- 229910052748 manganese Inorganic materials 0.000 claims abstract 2
- 239000011572 manganese Substances 0.000 claims abstract 2
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract 2
- 239000011733 molybdenum Substances 0.000 claims abstract 2
- 229910052710 silicon Inorganic materials 0.000 claims abstract 2
- 239000010703 silicon Substances 0.000 claims abstract 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract 2
- 229910052721 tungsten Inorganic materials 0.000 claims abstract 2
- 239000010937 tungsten Substances 0.000 claims abstract 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 2
- 238000007792 addition Methods 0.000 claims 1
- 230000002401 inhibitory effect Effects 0.000 claims 1
- 239000011241 protective layer Substances 0.000 claims 1
- 239000002344 surface layer Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 abstract description 2
- 239000004411 aluminium Substances 0.000 abstract 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical group [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium(II) oxide Chemical class [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/057—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being less 10%
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
Definitions
- the present invention relates to a nickel-based alloy according to the preamble of the first claim.
- Nickel-based alloys are preferably used where high strength values must be guaranteed at elevated temperatures.
- Such a use case is e.g. B. the helium-operated cooling circuit of a high-temperature nuclear reactor; the use of such reactors is being considered, inter alia, for coal refinement, e.g. B. the production of synthetic natural gas.
- the alloys mentioned tend to carburize and to intergranular corrosion at high operating temperatures of 800 - 1000 ° C .
- the property of aluminum is known to form a dense oxidation layer which inhibits further oxidation after its formation in an oxidizing atmosphere.
- simply alloying aluminum to nickel-based alloys is not sufficient to lead to the formation of a protective oxide layer on the surface of workpieces made from such alloys. Rather, the aluminum oxide forms in the form of irregular particles below the surface, where it not only has no protective effect, but also favors corrosion.
- the object of the invention is to provide an alloy composition which is capable of forming a continuous, dense oxide skin in an environment with low oxygen partial pressure and thus resists carburization and corrosion.
- the alloy should also (in contrast to the last mentioned) have mechanical properties that allow components, e.g. B. to produce tubes for heat exchangers in nuclear reactor plants of the type described.
- the protective layer-forming properties of the alloy should be in the entire temperature range of their use, i. H. from room temperature to about 1000 ° C.
- the solution to this problem consists of an alloy which meets the features set out in the characterizing part of the first claim.
- the features of special embodiments of this general inventive concept are mentioned in claim 2.
- Test pieces made of this alloy were exposed to a helium atmosphere of 1.8 bar at temperatures of 850, 900 and 950 ° C for periods of up to 2000 hours each.
- comparison pieces were made from a commercially available alloy with the composition exposed to these conditions.
- a thin, continuous and uniform oxide layer of about 1 ⁇ m had formed on the pieces of the alloy according to the invention, which effectively prevented deeper corrosion of the material.
- the comparison pieces on the other hand, showed irregular oxide particles reaching up to 50 ⁇ m deep. This does not provide corrosion protection. The same applies to protection against carburization.
- the alloy according to the invention showed a carbon uptake of between 0.003 and 0.006 percent by weight, the comparison alloy that of 0.042 percent by weight.
- test pieces as outlined above, were achieved without having been subjected to a special surface treatment. Rather, it was sufficient to use a usually bare, e.g. B. ground or stained surface.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3039473 | 1980-10-18 | ||
| DE19803039473 DE3039473A1 (de) | 1980-10-18 | 1980-10-18 | Aufkohlungs- und korrosionsgeschuetzte nickelbasislegierung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0050282A1 true EP0050282A1 (fr) | 1982-04-28 |
| EP0050282B1 EP0050282B1 (fr) | 1985-02-13 |
Family
ID=6114736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP81108147A Expired EP0050282B1 (fr) | 1980-10-18 | 1981-10-09 | Alliage à base de nickel à protection contre la carburisation et la corrosion |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0050282B1 (fr) |
| DE (2) | DE3039473A1 (fr) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB870366A (en) * | 1959-04-24 | 1961-06-14 | Mond Nickel Co Ltd | Improvements relating to nickel-molybdenum-iron alloys |
| DE1458405A1 (de) * | 1961-08-11 | 1968-12-19 | Int Nickel Ltd | Verwendung einer Nickel-Chrom-Eisen-Legierung |
| DE1940823A1 (de) * | 1968-08-12 | 1970-02-19 | Martin Marietta Corp | Verfahren zur Verhinderung der Ausbildung der Sigmaphase in Legierungen auf Nickel-Chrom-Basis |
| FR2216361A1 (fr) * | 1973-02-06 | 1974-08-30 | Cabot Corp | |
| GB2023651A (en) * | 1978-06-22 | 1980-01-03 | Westinghouse Electric Corp | Iron-nickel-chromium age-hardenable alloys |
-
1980
- 1980-10-18 DE DE19803039473 patent/DE3039473A1/de not_active Withdrawn
-
1981
- 1981-10-09 EP EP81108147A patent/EP0050282B1/fr not_active Expired
- 1981-10-09 DE DE8181108147T patent/DE3168928D1/de not_active Expired
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB870366A (en) * | 1959-04-24 | 1961-06-14 | Mond Nickel Co Ltd | Improvements relating to nickel-molybdenum-iron alloys |
| DE1458405A1 (de) * | 1961-08-11 | 1968-12-19 | Int Nickel Ltd | Verwendung einer Nickel-Chrom-Eisen-Legierung |
| DE1940823A1 (de) * | 1968-08-12 | 1970-02-19 | Martin Marietta Corp | Verfahren zur Verhinderung der Ausbildung der Sigmaphase in Legierungen auf Nickel-Chrom-Basis |
| FR2216361A1 (fr) * | 1973-02-06 | 1974-08-30 | Cabot Corp | |
| US4080201A (en) * | 1973-02-06 | 1978-03-21 | Cabot Corporation | Nickel-base alloys |
| GB2023651A (en) * | 1978-06-22 | 1980-01-03 | Westinghouse Electric Corp | Iron-nickel-chromium age-hardenable alloys |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0050282B1 (fr) | 1985-02-13 |
| DE3039473A1 (de) | 1982-06-09 |
| DE3168928D1 (en) | 1985-03-28 |
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| 17P | Request for examination filed |
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