EP0055272B1 - Revetement composite electro-depose et procede de formation de celui-ci - Google Patents
Revetement composite electro-depose et procede de formation de celui-ci Download PDFInfo
- Publication number
- EP0055272B1 EP0055272B1 EP81901799A EP81901799A EP0055272B1 EP 0055272 B1 EP0055272 B1 EP 0055272B1 EP 81901799 A EP81901799 A EP 81901799A EP 81901799 A EP81901799 A EP 81901799A EP 0055272 B1 EP0055272 B1 EP 0055272B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- particles
- coating
- aluminium
- oxide
- chromium
- 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.)
- Expired
Links
- 238000000576 coating method Methods 0.000 title claims description 46
- 239000011248 coating agent Substances 0.000 title claims description 45
- 238000000034 method Methods 0.000 title claims description 24
- 239000002131 composite material Substances 0.000 title claims description 10
- 239000002245 particle Substances 0.000 claims description 56
- 239000004411 aluminium Substances 0.000 claims description 31
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 31
- 229910052782 aluminium Inorganic materials 0.000 claims description 27
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 26
- 239000011651 chromium Substances 0.000 claims description 23
- 229910052751 metal Inorganic materials 0.000 claims description 21
- 239000002184 metal Substances 0.000 claims description 21
- 229910052804 chromium Inorganic materials 0.000 claims description 19
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 17
- 239000011159 matrix material Substances 0.000 claims description 14
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 12
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 12
- 238000007747 plating Methods 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 11
- 229910000838 Al alloy Inorganic materials 0.000 claims description 8
- 229910000599 Cr alloy Inorganic materials 0.000 claims description 8
- 239000010941 cobalt Substances 0.000 claims description 6
- 229910017052 cobalt Inorganic materials 0.000 claims description 6
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 6
- 229910052735 hafnium Inorganic materials 0.000 claims description 6
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 6
- 150000002910 rare earth metals Chemical class 0.000 claims description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 4
- 238000000151 deposition Methods 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 229910052726 zirconium Inorganic materials 0.000 claims description 4
- PMTRSEDNJGMXLN-UHFFFAOYSA-N titanium zirconium Chemical compound [Ti].[Zr] PMTRSEDNJGMXLN-UHFFFAOYSA-N 0.000 claims description 2
- 229910001404 rare earth metal oxide Inorganic materials 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 2
- 239000000788 chromium alloy Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 238000009924 canning Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- UFGZSIPAQKLCGR-UHFFFAOYSA-N chromium carbide Chemical compound [Cr]#C[Cr]C#[Cr] UFGZSIPAQKLCGR-UHFFFAOYSA-N 0.000 description 1
- BIJOYKCOMBZXAE-UHFFFAOYSA-N chromium iron nickel Chemical compound [Cr].[Fe].[Ni] BIJOYKCOMBZXAE-UHFFFAOYSA-N 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- KTVIXTQDYHMGHF-UHFFFAOYSA-L cobalt(2+) sulfate Chemical compound [Co+2].[O-]S([O-])(=O)=O KTVIXTQDYHMGHF-UHFFFAOYSA-L 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910001234 light alloy Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 229910021652 non-ferrous alloy Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 238000005382 thermal cycling Methods 0.000 description 1
- ZCUFMDLYAMJYST-UHFFFAOYSA-N thorium dioxide Chemical compound O=[Th]=O ZCUFMDLYAMJYST-UHFFFAOYSA-N 0.000 description 1
- 229910003470 tongbaite Inorganic materials 0.000 description 1
- 239000011800 void material Substances 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 present invention relates to a composite electrodeposited coating comprising a metal matrix electrodeposited from a plating bath, the matrix incorporating particles deposited simultaneously from the bath in which the particles are substantially insoluble.
- US 3057048 (Hirakis) describes a method of protecting niobium in a high temperature oxidising environment by electro-depositing a coating comprising a matrix of iron chromium nickel or cobalt incorporating various solid particles for example alumina, thoria, silicon, aluminium, chromium and boron.
- the coating is found to have a particulate content of from 5 to 20% by volume.
- a composite electrodeposited coating is characterised in that the particles comprise a combination of particles of or containing chromium, particles of or containing aluminium and particles of an oxide of a rare earth metal and/or an oxide of zirconium, titanium or hafnium.
- the particles other than the oxide particles may comprise pure chromium powder and pure aluminium powder, or an alloy of chromium and aluminium in powder form, or an alloy of chromium and aluminium in powder form mixed with either both or one of pure aluminium or chromium, or one further possibility is to have a small quantity of a rare earth metal or a Group IV metal alloyed with either chromium or aluminium or both.
- the metal matrix comprises nickel or cobalt and the coating may be used to coat any suitable substrate for example steel, high temperature creep-resistant nickel alloys, nonferrous and light alloys and non-metallic substances with an outer conductive layer.
- the oxide present in the coating preferably comprises "lime-stabilized" zirconia.
- the oxide may constitute from 0.01 to 5% of the coating, preferably about 2% by weight, and may be present in the size range up to 10 pm.
- the chromium present in the coating may comprise up to 40% by weight of the coating, preferably comprising 10 to 20%, for example 15%.
- the aluminium present in the coating may comprise up to 25% by weight of the coating and preferably comprises 10 to 20%.
- the particles may be up to 10 pm in diameter and preferably fall largely within the range of 1 to 2 um.
- a method of forming a composite coating is characterised in that the particles comprise a combination of particles of or containing chromium, particles of or containing aluminium, and particles of an oxide of a rare earth metal and/or an oxide of zirconium, titanium or hafnium.
- the coating may be further heat treated, either in use or for example by being held at 1000°C for 4 hours.
- a metal atom diffuses outwards through the oxide it may leave behind a vacancy.
- the vacancies would normally coalesce at the interface between the metal and oxide to form voids such that the oxide would only be attached to the parent metal at a few places.
- the oxide formed might have a greater volume than the original metal from which it has been formed and so a compressive stress would develop in the growing oxide layer. This might give rise to a complicated stress situation at the oxide-metal interface which is believed to consist mainly of shear stresses and also transverse stress acting to pull the oxide away from the metal. The net result of these stresses coupled with the lack of coherency at the interface would be that the oxide would spall off and expose fresh metal to the hot gas. This process would repeat itself and so the metal would be progressively lost.
- a problem which may arise if oxide spallation does not occur is that the oxide simply gets thicker as time goes on and the component gets weaker as the cross section of the metal decreases.
- One method by which these problems may be overcome is to reduce simultaneously the rates at which the oxygen and metal diffuse through the oxide and to provide a means by which the vacancies may be annihilated and so prevent void formation. It is in this way that the inclusion of the oxide particles, which are both thermodynamically stable and chemically stable in an oxidising atmosphere, may greatly improve the adhesion of the aluminium oxide to the matrix metal at the surface of the coating. It is believed that the effect is achieved in three ways, either singly or in combination.
- the first of these is the “stress relief” mechanism in which the presence of oxide particles at the coating's surface provides “dead spots” over which the developing oxide film can grow laterally thereby relieving any stresses in the film.
- the second is the “vacancy sink” mechanism in which the vacancies left by aluminium atoms diffusing to the surface to react with oxygen are at least partially filled by oxide molecules so that the oxide particles undergo a rearrangement to occupy the voids which effectively "diffuse” through the matrix.
- the third is simply a reduction in the diffusion coefficients through the growing surface oxide layer of either the metal ions or the oxygen atoms or both.
- a method of forming a composite coating is characterised in that the particles comprise a combination of particles of or containing chromium and particles of an oxide of a rear earth metal and/or oxide of zirconium titanium or hafnium, and by subsequently aluminising the coating.
- the particles also include an aluminium-containing substance and, preferably, the aluminising step comprises a pack-aluminising process.
- the material used may be aluminium powder, or a mixture of aluminium and aluminium oxide.
- the aluminium is in the form of an alloy with chromium.
- the pack-aluminising is carried out at a high temperature.
- the aluminium is believed to diffuse into the surface of the electrodeposited coating and thus form a bond.
- the coating may be subsequently heat treated, for example by being held at 1000°C for about 4 hours, or may be heat treated in use.
- the coating process may involve an electrolytic or an electroless method and may be carried out using the apparatus and operating conditions described in the Applicants' British Patents Nos. 1 218 179, 1 224 166, 1 329 081 and 1 347 184.
- the panel to be coated was given a pretreatment comprising immersion in a cyanide cleaner for two minutes followed by a water rinse etching by immersion for 30 seconds in a 50% sulphuric acid followed by a water rinse, and a nickel strike by plating in a nickel bath for three minutes at a current density of 3.9 amps per square decimetre.
- the panel was secured in a plating barrel and connected to a cathode contact. 40 grams per litre of barrel capacity of lime-stabilised zirconia powder and 600 grams per litre of barrel capacity of chromium/aluminium alloy powder, both with a mean particle size of to 5 pm, were added to the barrel and the opening in the barrel through which the panel to be coated and the powder were admitted was closed.
- the barrel was then completely submerged in the solution in the tank and was rotated at three revolutions per minute while composite plating took place at a voltage of between 2.5 and 3 volts with a current density of approximately 2.7 amps per square decimetre.
- the solution temperature was maintained at 50°C and the solution had a pH of between 4.5 and 5.
- plating was stopped.
- the panel was then held at 1000°C for 4 hours, cooled and examined. It was found that the panel had been given a tenacious coating having an even distribution of particles.
- the coating had a particle content of approximately 2% by volume of zirconia and 30% by volume of chromium/ aluminium alloy.
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)
- Electroplating And Plating Baths Therefor (AREA)
- Chemically Coating (AREA)
Claims (21)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8021614A GB2083076B (en) | 1980-07-02 | 1980-07-02 | Composite electrodeposited coating and a method of forming such a coating |
GB8021614 | 1980-07-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0055272A1 EP0055272A1 (fr) | 1982-07-07 |
EP0055272B1 true EP0055272B1 (fr) | 1985-11-27 |
Family
ID=10514464
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP81901799A Expired EP0055272B1 (fr) | 1980-07-02 | 1981-07-02 | Revetement composite electro-depose et procede de formation de celui-ci |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0055272B1 (fr) |
JP (2) | JPS643960B2 (fr) |
BE (1) | BE889491A (fr) |
CA (1) | CA1176596A (fr) |
GB (1) | GB2083076B (fr) |
IT (1) | IT1171356B (fr) |
WO (1) | WO1982000162A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10251902A1 (de) * | 2002-11-07 | 2004-06-03 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zum Beschichten eines Substrats und beschichteter Gegenstand |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3535548C2 (de) * | 1984-10-05 | 1999-03-04 | Baj Coatings Ltd | Beschichteter Gegenstand und Verfahren zum Herstellen einer Beschichtung eines Gegenstandes |
GB2167446B (en) * | 1984-10-05 | 1988-05-05 | Baj Ltd | Electrode deposited composite coating |
FR2615871B1 (fr) * | 1987-05-26 | 1989-06-30 | Snecma | Pieces de turbomachine en superalliage comportant un revetement protecteur metalloceramique |
DE102013218687A1 (de) * | 2013-09-18 | 2015-04-02 | MTU Aero Engines AG | Galvanisch hergestellte Verschleißschutzbeschichtung und Verfahren hierfür |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3057048A (en) * | 1958-11-06 | 1962-10-09 | Horizons Inc | Protection of niobium |
JPS5278718A (en) * | 1975-12-26 | 1977-07-02 | Seiko Instr & Electronics | Component parts |
JPS5929119B2 (ja) * | 1976-10-12 | 1984-07-18 | スズキ株式会社 | 多層複合メツキ層 |
CH599352A5 (fr) * | 1976-10-15 | 1978-05-31 | Bbc Brown Boveri & Cie |
-
1980
- 1980-07-02 GB GB8021614A patent/GB2083076B/en not_active Expired
-
1981
- 1981-07-02 JP JP56502220A patent/JPS643960B2/ja not_active Expired
- 1981-07-02 WO PCT/GB1981/000124 patent/WO1982000162A1/fr active IP Right Grant
- 1981-07-02 EP EP81901799A patent/EP0055272B1/fr not_active Expired
- 1981-07-02 IT IT48809/81A patent/IT1171356B/it active
- 1981-07-02 BE BE0/205298A patent/BE889491A/fr not_active IP Right Cessation
- 1981-07-02 CA CA000381000A patent/CA1176596A/fr not_active Expired
-
1988
- 1988-06-01 JP JP63135397A patent/JPH01212800A/ja active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10251902A1 (de) * | 2002-11-07 | 2004-06-03 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zum Beschichten eines Substrats und beschichteter Gegenstand |
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 |
Also Published As
Publication number | Publication date |
---|---|
BE889491A (fr) | 1982-01-04 |
GB2083076B (en) | 1984-06-13 |
JPH01212800A (ja) | 1989-08-25 |
JPH0260760B2 (fr) | 1990-12-18 |
JPS57500882A (fr) | 1982-05-20 |
CA1176596A (fr) | 1984-10-23 |
WO1982000162A1 (fr) | 1982-01-21 |
JPS643960B2 (fr) | 1989-01-24 |
IT8148809A0 (it) | 1981-07-02 |
IT1171356B (it) | 1987-06-10 |
GB2083076A (en) | 1982-03-17 |
EP0055272A1 (fr) | 1982-07-07 |
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