EP0331519B1 - Herstellung von Beschichtungen aus einem Aluminiummatrix-Verbundstoff auf Metallstrukturen - Google Patents

Herstellung von Beschichtungen aus einem Aluminiummatrix-Verbundstoff auf Metallstrukturen Download PDF

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Publication number
EP0331519B1
EP0331519B1 EP89302156A EP89302156A EP0331519B1 EP 0331519 B1 EP0331519 B1 EP 0331519B1 EP 89302156 A EP89302156 A EP 89302156A EP 89302156 A EP89302156 A EP 89302156A EP 0331519 B1 EP0331519 B1 EP 0331519B1
Authority
EP
European Patent Office
Prior art keywords
metal
aluminum
matrix
filler
coating
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 - Lifetime
Application number
EP89302156A
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English (en)
French (fr)
Other versions
EP0331519A1 (de
Inventor
David M. Schuster
Harvey Fisher
Pierre Cinq-Mars
Bernard Altschuller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rio Tinto Alcan International Ltd
Original Assignee
Alcan International Ltd Canada
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Alcan International Ltd Canada filed Critical Alcan International Ltd Canada
Publication of EP0331519A1 publication Critical patent/EP0331519A1/de
Application granted granted Critical
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/06—Metallic material

Definitions

  • This invention relates to the application of corrosion and mechanical wear resistant coatings to metal surfaces and, more particularly, to the coating of steel structures with aluminum matrix composite coatings.
  • aluminum matrix composite compositions have been used as coatings on steel substrates to give not only high cathodic protection but also good wear resistance to the steel structure.
  • These coatings have in the past been applied by techniques such as flame spraying a body of molten metal onto the substrate to be coated, with particulate refractory or ceramic particles introduced into the spray. Flame spraying of metal powder together with refractory or ceramic particles has also been used. It is also known to use thermal spraying or plasma spraying in place of the above mentioned flame spraying technique.
  • an aluminum matrix composite coating is applied to metal substrates by directly flame spraying or arc spraying a preformed aluminum matrix composite material.
  • the preformed material is in the form of a wire or rod which acts as a feedstock for the flame spraying or arc spraying process.
  • Metal matrix composites are well known in the art and are formed of a metal matrix having distributed therein a divided solid filler, i.e. a fibrous or particulate material which is capable of being incorporated in and distributed through the metal matrix and which at least substantially maintains its integrity as incorporated rather than losing its form or identity by dissolution in or chemical combination with the metal.
  • a divided solid filler i.e. a fibrous or particulate material which is capable of being incorporated in and distributed through the metal matrix and which at least substantially maintains its integrity as incorporated rather than losing its form or identity by dissolution in or chemical combination with the metal.
  • solid filler materials that have been used for the above purpose, there may be mentioned alumina, titanium diboride, silica, zirconia, silicon carbide, silicon nitride, etc.
  • Aluminum-TiB2 composites for instance, have been used for applications requiring high strength and/or high resistance to wear.
  • the aluminum matrix composite materials utilized as feedstocks in the process of this invention are manufactured by techniques known in the art and typically contain 5 to 60 volume % of the refractory or ceramic filler. A range of 5 to 40 volume % of filler is preferred, with a range of 10 to 20 volume % being particularly preferred.
  • the coating is preferably applied to a thickness in the range of about 50 to 5000 ⁇ m (microns).
  • the substrate to be treated is typically a ferrous metal, e.g. steel, structure.
  • Other substrates that may be coated according to the invention include a heat treatable, high strength aluminum alloy structure, e.g. an AA 7000 series alloy. Such aluminum alloys are sometimes subject to stress corrosion in service.
  • the surface of the substrate to be treated is preferably prepared by grit blasting, e.g. using alumina particles. It has also been found to be advantageous, but not essential, to preheat the substrate to at least about 120°C to remove surface moisture prior to application of the coating. Of course, this is not always feasible, particularly for marine applications. In some instances, it may also be advantageous to precoat the substrate by conventional metallizing with aluminium prior to the application of the aluminum matrix composite coating.
  • the-composite coating formed by the method of this invention are generally superior to those obtained by the prior methods.
  • the composite coatings obtained by the present invention have improved adhesion, low porosity and generally a sound structure.
  • a cast ingot comprising an AA 1350 aluminum containing about 15 volume % of silicon carbide particles uniformly distributed throughout.
  • the ingot was made according to the method disclosed in PCT application WO87/06624, published November 5, 1987.
  • the ingot was extruded and drawn into a wire having a diameter of about 2.3 mm and this became the feedstock for an arc spray process.
  • a steel substrate was used in the form of a steel cylinder and an arc was struck between a pair of feed wires formed of the above aluminum matrix composite material.
  • the arc was held at a distance of approximately 10 cm from the cylinder while the cylinder was rotated, with an arc current of approximately 150 amps being used.
  • a coating having a thickness of approximately 3000 ⁇ m (microns) was deposited on the cylinder.
  • the product obtained was subjected to metallographic examination and the coating had good adhesion, a low porosity and a generally sound structure.
  • Tests were conducted to compare a composite coating produced by the method of this invention with a composite coating produced by a prior art method.
  • Example 2 Following the same general procedure as in Example 1, a cast ingot was obtained containing about 10 volume % of silicon carbide particles uniformly distributed in an AA 6061 aluminum alloy.
  • the ingot was extruded and drawn into a wire having a diameter of about 2.3 mm and this was used as a feedstock for an arc spray process.
  • a steel substrate in the form of a flat bar was used and an arc was struck between a pair of feed wires formed of the above ingot.
  • the arc was held at a distance of about 10 cm from the steel bar with an arc current of about 150 amps being used.
  • a coating having a thickness of about 3000 ⁇ m (microns) was deposited on the bar.
  • An AA 6061 aluminum alloy was formed into a wire having a diameter of about 2.3 mm and this was used as a feedstock for an arc spray process.
  • a steel substrate in the form of a flat bar was used and an arc was struck between a pair of feed wires formed of the above alloy.
  • the arc was held at a distance of about 10 cm from the steel bar with an arc current of about 150 amps being used.
  • silicon carbide particles were fed between the arcing wires to be deposited with the aluminum, the silicon carbide particles being fed at a rate of about 10 volume % relative to the aluminum alloy fed.
  • a composite coating having a thickness of about 5000 ⁇ m (microns) was deposited on the bar.
  • Example 2 Following the same general procedure as in Example 1, a cast ingot was formed comprising an AA-1060 aluminum containing about 15 volume % of aluminum oxides particles uniformly distributed throughout. The ingot was extruded and drawn into wires having diameters of 3.2 and 2.4 mm and this became the feedstock for a flame spray process.
  • the steel samples were flame sprayed within 10 minutes after grit blasting with either 3.2 or 2.4 mm composite wire.
  • the flame spray system was operated at an oxygen gas setting of 2.45 Kg./sq./cm. at 1.4 m3/h, an acetylene gas setting of 1.4 Kg./sq./cm. at 1.1 m3/h and an air setting of 4.55 Kg./sq./cm. at 1.6 m3/h.
  • the spray gun was held at a distance of approximately 15 cm from the steel samples.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Laminated Bodies (AREA)

Claims (11)

1. Verfahren zur Herstellung einer gegen Korrosion und mechanischen Verschleiß widerstandsfähigen Beschichtung auf einer zu schützenden Metalloberfläche, das
a) die Schaffung eines Stabes oder eines Drahtes, der aus einem vorgeformten Metallmatrixverbundmaterial gebildet ist, das eine Metallmatrix mit einem darin verteilten, fein zerteiltem, festen Füllmaterial umfaßt, und
b) das Aufbringen einer Beschichtung aus dem Metallmatrixverbundmaterial auf die zu schützende Metalloberfläche mittels eines Flammsprüh- oder Bogensprühverfahrens umfaßt.
2. Verfahren nach Anspruch 1, wobei das Metallmatrixverbundmaterial eine Aluminiummatrix ist, die ein fibröses oder teilchenförmiges, feuerfestes Füllmaterial enthält.
3. Verfahren nach Anspruch 2, wobei die Matrix 5 bis 60 Volumenprozent des Füllers enthält.
4. Verfahren nach Anspruch 2, wobei die Matrix 5 bis 40 Volumenprozent des Füllers enthält.
5. Verfahren nach Anspruch 2, wobei die Matrix 10 bis 20 Volumenprozent des Füllers enthält.
6. Verfahren nach Anspruch 2, wobei die Metalloberfläche die Oberfläche einer eisenhaltigen Metallstruktur ist.
7. Verfahren nach Anspruch 2, wobei die Metalloberfläche die Oberfläche einer wärmebehandelbaren, hochfesten Aluminiumlegierungsstruktur ist.
8. Verfahren nach Anspruch 6, wobei das Füllmaterial aus Aluminiumoxid, Titandiborid, Siliziumdioxid, Zirkonoxid, Siliziumcarbid und Siliziumnitrid ausgewählt wird.
9. Verfahren nach Anspruch 6, wobei das Füllmaterial Aluminiumoxid ist.
10. Verfahren nach Anspruch 8, wobei die Aluminiummatrix unlegiertes Aluminium ist.
11. Verfahren nach Anspruch 8, wobei die Schutzbeschichtung in einer Dicke von ungefähr 50 bis 5000 µm aufgetragen wird.
EP89302156A 1988-03-04 1989-03-03 Herstellung von Beschichtungen aus einem Aluminiummatrix-Verbundstoff auf Metallstrukturen Expired - Lifetime EP0331519B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US16423488A 1988-03-04 1988-03-04
US164234 1988-03-04

Publications (2)

Publication Number Publication Date
EP0331519A1 EP0331519A1 (de) 1989-09-06
EP0331519B1 true EP0331519B1 (de) 1992-07-01

Family

ID=22593568

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89302156A Expired - Lifetime EP0331519B1 (de) 1988-03-04 1989-03-03 Herstellung von Beschichtungen aus einem Aluminiummatrix-Verbundstoff auf Metallstrukturen

Country Status (4)

Country Link
EP (1) EP0331519B1 (de)
JP (1) JP2694996B2 (de)
DE (1) DE68901935T2 (de)
NO (1) NO173946C (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102839344A (zh) * 2012-08-08 2012-12-26 南京航空航天大学 高性能电弧喷涂Zn-Al粉芯丝材及其制备方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993014236A1 (en) * 1992-01-10 1993-07-22 Alcan Aluminium Uk Ltd. Wear surface
US7229700B2 (en) * 2004-10-26 2007-06-12 Basf Catalysts, Llc. Corrosion-resistant coating for metal substrate

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3322515A (en) * 1965-03-25 1967-05-30 Metco Inc Flame spraying exothermically reacting intermetallic compound forming composites
US3332752A (en) * 1963-08-22 1967-07-25 Raybestos Manhattan Inc Composite flame spraying wire
IT948422B (it) * 1971-02-05 1973-05-30 Pyrotenax Ltd Metodo per produrre un filo di elettrodo e sua applicazione nella spruzzattura ad arco
US3864093A (en) * 1972-11-17 1975-02-04 Union Carbide Corp High-temperature, wear-resistant coating
US4039318A (en) * 1976-07-19 1977-08-02 Eutectic Corporation Metaliferous flame spray material for producing machinable coatings
US4208019A (en) * 1978-08-10 1980-06-17 John Dusenbery Co., Inc. Turret winder for pressure-sensitive tape
US4276353A (en) * 1978-08-23 1981-06-30 Metco, Inc. Self-bonding flame spray wire for producing a readily grindable coating
JPS58104173A (ja) * 1981-12-17 1983-06-21 Nissan Motor Co Ltd 線爆溶射用線材
JPS60255964A (ja) * 1984-06-01 1985-12-17 Tomio Suzuki 溶融溶射機用溶射材

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102839344A (zh) * 2012-08-08 2012-12-26 南京航空航天大学 高性能电弧喷涂Zn-Al粉芯丝材及其制备方法

Also Published As

Publication number Publication date
EP0331519A1 (de) 1989-09-06
JPH0270053A (ja) 1990-03-08
JP2694996B2 (ja) 1997-12-24
NO173946C (no) 1994-02-23
DE68901935D1 (de) 1992-08-06
NO890923D0 (no) 1989-03-03
NO890923L (no) 1989-09-05
DE68901935T2 (de) 1993-01-14
NO173946B (no) 1993-11-15

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