EP0316388A1 - Verfahren zur herstellung von oxidations- und heissgaskorrosionsschutzschichten. - Google Patents
Verfahren zur herstellung von oxidations- und heissgaskorrosionsschutzschichten.Info
- Publication number
- EP0316388A1 EP0316388A1 EP88904471A EP88904471A EP0316388A1 EP 0316388 A1 EP0316388 A1 EP 0316388A1 EP 88904471 A EP88904471 A EP 88904471A EP 88904471 A EP88904471 A EP 88904471A EP 0316388 A1 EP0316388 A1 EP 0316388A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- oxidation
- hot gas
- titanium silicide
- cobalt
- gas corrosion
- 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
- 238000005260 corrosion Methods 0.000 title claims abstract description 14
- 230000007797 corrosion Effects 0.000 title claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- 238000000034 method Methods 0.000 title claims description 13
- 230000001590 oxidative effect Effects 0.000 title claims description 3
- 239000011253 protective coating Substances 0.000 title abstract 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000002245 particle Substances 0.000 claims abstract description 16
- 230000003647 oxidation Effects 0.000 claims abstract description 14
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 14
- 239000010941 cobalt Substances 0.000 claims abstract description 13
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 13
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000006185 dispersion Substances 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 8
- 239000011159 matrix material Substances 0.000 claims description 13
- 238000009792 diffusion process Methods 0.000 claims description 8
- 229910021341 titanium silicide Inorganic materials 0.000 claims description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010936 titanium Substances 0.000 claims description 5
- 229910052719 titanium Inorganic materials 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 229910000531 Co alloy Inorganic materials 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 230000008021 deposition Effects 0.000 claims description 3
- 239000008151 electrolyte solution Substances 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 2
- 229910000640 Fe alloy Inorganic materials 0.000 claims 1
- 229910000990 Ni alloy Inorganic materials 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 3
- 150000003609 titanium compounds Chemical class 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 15
- 229910008479 TiSi2 Inorganic materials 0.000 description 4
- DFJQEGUNXWZVAH-UHFFFAOYSA-N bis($l^{2}-silanylidene)titanium Chemical compound [Si]=[Ti]=[Si] DFJQEGUNXWZVAH-UHFFFAOYSA-N 0.000 description 4
- 239000011241 protective layer Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 229910021332 silicide Inorganic materials 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 229910008484 TiSi Inorganic materials 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- SDLFRXZYUSIEBE-UHFFFAOYSA-N [Si][Ti][Co] Chemical compound [Si][Ti][Co] SDLFRXZYUSIEBE-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 229910000428 cobalt oxide Inorganic materials 0.000 description 1
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910021334 nickel silicide Inorganic materials 0.000 description 1
- RUFLMLWJRZAWLJ-UHFFFAOYSA-N nickel silicide Chemical compound [Ni]=[Si]=[Ni] RUFLMLWJRZAWLJ-UHFFFAOYSA-N 0.000 description 1
- 238000007750 plasma spraying Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- -1 salt compounds Chemical class 0.000 description 1
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910000601 superalloy Inorganic materials 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D15/00—Electrolytic or electrophoretic production of coatings containing embedded materials, e.g. particles, whiskers, wires
- C25D15/02—Combined electrolytic and electrophoretic processes with charged materials
Definitions
- the invention relates to a method for producing an oxidation and hot gas corrosion protection layer by galvanic dispersion coating.
- Turbine blades are exposed to high temperature and vibration loads as well as oxidation and corrosion attacks by process gases. They are often made from super alloys based on nickel, iron or cobalt.
- a number of protective layers have been proposed to increase the service life or to increase the operating temperature. The known protective layers are applied in the diffusion process (alitation or chrome plating) or plasma spraying process.
- REPLACEMENT LEAF heat treatment is generated. It has been shown that the use of silicon and titanium as a mixture in the course of the heat treatment leads to a certain diffusion into the matrix consisting of nickel or cobalt, but that the diffusion layer produced thereby does not achieve a sufficient protective effect, so that at high temperatures the base material to be protected is nevertheless oxidized. In the aforementioned publication it is also proposed to use a mixture of tantalum silicide and nickel silicide as protective oxide-forming elements. However, the galvanic deposition of two silicides has the disadvantage that the dispersion bath must be constantly checked and supplemented in order to keep the quantitative ratio of the two silicides to one another constant. For this reason, the method is difficult to carry out in practice.
- TiSi2 particles in the form of a powder are introduced into a Co- or Ni-containing electrolyte solution (e.g. aqueous solution of C0S04, which contains NaCl and H3BO3).
- the grain size of the TiSi 2 particles is in the range from 0.5 to 50 ⁇ m, preferably from 2 to 5 ⁇ m.
- the amount introduced is in the range from 100 to 500 grams per liter of the electrolyte solution, preferably 200 to 300 grams per liter.
- the particles are kept in suspension in the electrolyte by introducing air and moving the bath.
- a cobalt layer is deposited into which about 20 to 30 percent by volume TiSi2 ⁇ Particles - homogeneously distributed - are installed. Possible layer thicknesses are between 10 and 1000 micrometers.
- FIG. 1 of the drawing shows such a dispersion layer applied to a workpiece made of a cobalt alloy in a 500-fold magnification.
- the base substrate (cobalt alloy), which appears bright in the picture, is designated by (1).
- the TiSi2 particles (3) are embedded in a matrix (2) made of cobalt. The background of the image appears dark.
- heat treatment is carried out at temperatures from 700 to 950 ° C. for a period of time which is 24 hours for the lower temperature limit and one hour for the upper one, and from temperatures of 750 ° C. upwards is carried out in a non-oxidizing atmosphere or in a vacuum in order to form an oxidation layer of the cobalt
- REPLACEMENT LEAF to prevent or keep the matrix low before a sufficient diffusion process has taken place between the TiSi 2 particles and the cobalt matrix.
- FIG. 2 of the drawing shows the coated body according to FIG. 1 after a heat treatment at a temperature of 950 ° C. in a vacuum for a period of 1 hour.
- the elements titanium and silicon can be alloyed in one step, which cannot be achieved with other methods.
- the cobalt-titanium-silicon layer produced in this way shows good properties with regard to oxidation resistance and hot gas corrosion protection.
- the use of this protective layer on turbine blades or guide blades is very advantageous.
- the layer can replace the cobalt matrix
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19873716935 DE3716935A1 (de) | 1987-05-20 | 1987-05-20 | Verfahren zur herstellung von oxidations- und heissgaskorrosionsschutzschichten |
DE3716935 | 1987-05-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0316388A1 true EP0316388A1 (de) | 1989-05-24 |
EP0316388B1 EP0316388B1 (de) | 1991-03-20 |
Family
ID=6327976
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88904471A Expired - Lifetime EP0316388B1 (de) | 1987-05-20 | 1988-05-20 | Verfahren zur herstellung von oxidations- und heissgaskorrosionsschutzschichten |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0316388B1 (de) |
DE (2) | DE3716935A1 (de) |
WO (1) | WO1988009402A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3904170A1 (de) * | 1989-02-11 | 1990-08-16 | Uerpmann Ernst Peter Dr Rer Na | Verfahren zum schutz von rauchgasentschwefelungsanlagen vor korrosion |
DE10251902B4 (de) * | 2002-11-07 | 2009-05-07 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zum Beschichten eines Substrats und beschichteter Gegenstand |
JP4495054B2 (ja) | 2005-09-02 | 2010-06-30 | 三菱重工業株式会社 | 回転機械の部品及び回転機械 |
DE102011100100A1 (de) * | 2011-04-29 | 2012-10-31 | Air Liquide Deutschland Gmbh | Verfahren zum Behandeln einer Leitungskomponente |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR92001E (fr) * | 1963-03-01 | 1968-09-13 | Udylite Corp | Procédé de nickelage, bains utilisés et produits obtenus |
CH599352A5 (de) * | 1976-10-15 | 1978-05-31 | Bbc Brown Boveri & Cie |
-
1987
- 1987-05-20 DE DE19873716935 patent/DE3716935A1/de not_active Withdrawn
-
1988
- 1988-05-20 EP EP88904471A patent/EP0316388B1/de not_active Expired - Lifetime
- 1988-05-20 DE DE8888904471T patent/DE3862100D1/de not_active Expired - Lifetime
- 1988-05-20 WO PCT/DE1988/000302 patent/WO1988009402A1/de active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO8809402A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE3716935A1 (de) | 1988-12-01 |
DE3862100D1 (de) | 1991-04-25 |
WO1988009402A1 (en) | 1988-12-01 |
EP0316388B1 (de) | 1991-03-20 |
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