EP3283673B1 - Composite de matrice métallique anodisé - Google Patents
Composite de matrice métallique anodisé Download PDFInfo
- Publication number
- EP3283673B1 EP3283673B1 EP16718151.0A EP16718151A EP3283673B1 EP 3283673 B1 EP3283673 B1 EP 3283673B1 EP 16718151 A EP16718151 A EP 16718151A EP 3283673 B1 EP3283673 B1 EP 3283673B1
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- EP
- European Patent Office
- Prior art keywords
- anodized layer
- aluminum
- reinforcement particles
- particles
- anodized
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- 239000011156 metal matrix composite Substances 0.000 title claims description 23
- 239000002245 particle Substances 0.000 claims description 103
- 230000002787 reinforcement Effects 0.000 claims description 65
- 239000000758 substrate Substances 0.000 claims description 40
- 238000007743 anodising Methods 0.000 claims description 29
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 26
- 239000011159 matrix material Substances 0.000 claims description 24
- 229910000838 Al alloy Inorganic materials 0.000 claims description 23
- 229910052782 aluminium Inorganic materials 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 20
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 12
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 9
- 229910052749 magnesium Inorganic materials 0.000 claims description 9
- 239000011777 magnesium Substances 0.000 claims description 9
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 9
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 9
- 239000002131 composite material Substances 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- 229910010293 ceramic material Inorganic materials 0.000 claims description 4
- 229910052580 B4C Inorganic materials 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 3
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims description 3
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 3
- 150000001247 metal acetylides Chemical class 0.000 claims description 3
- 150000004767 nitrides Chemical class 0.000 claims description 3
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 3
- 229910021332 silicide Inorganic materials 0.000 claims description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 3
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 claims description 3
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 2
- 229910052744 lithium Inorganic materials 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- -1 oxides Inorganic materials 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000000463 material Substances 0.000 description 15
- 239000011148 porous material Substances 0.000 description 14
- 230000007797 corrosion Effects 0.000 description 10
- 238000005260 corrosion Methods 0.000 description 10
- 230000007547 defect Effects 0.000 description 8
- 238000000879 optical micrograph Methods 0.000 description 8
- 239000000919 ceramic Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 229910000676 Si alloy Inorganic materials 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 229910052748 manganese Inorganic materials 0.000 description 3
- 239000011572 manganese Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
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- 230000000694 effects Effects 0.000 description 2
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- 239000011856 silicon-based particle Substances 0.000 description 2
- 229910000622 2124 aluminium alloy Inorganic materials 0.000 description 1
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 238000002048 anodisation reaction Methods 0.000 description 1
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- 238000000498 ball milling Methods 0.000 description 1
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- 238000006243 chemical reaction Methods 0.000 description 1
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
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- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
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- 238000001513 hot isostatic pressing Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000005551 mechanical alloying Methods 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
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- 238000005096 rolling process Methods 0.000 description 1
- 238000004626 scanning electron microscopy Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
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- 239000000126 substance Substances 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 229940095064 tartrate Drugs 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
- C25D11/08—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing inorganic acids
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
- C25D11/10—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing organic acids
Definitions
- US2011048958 A1 discloses an anodized aluminum-silicon alloy work piece formed from a cast aluminum-silicon alloy substrate material by applying a friction stir processing treatment to the cast aluminum-silicon alloy substrate material to reduce an average particle size of a plurality of silicon particles contained within the substrate material while increasing a size uniformity of the plurality of silicon particles, and subsequently anodizing the treated cast aluminum-silicon alloy substrate material.
- the present disclosure relates to metal matrix composite articles including a substrate and an anodized layer.
- the anodized layer includes an aluminum oxide matrix phase and a dispersed phase of reinforcement particles.
- the ratio of the thickness of the anodized layer to the average particle size (D50) of the reinforcement particles is at least 1.3.
- Anodizing is often used to protect aluminum and aluminum alloy components from corrosion.
- the anodizing process works by converting the top surface of an aluminum alloy substrate into an amorphous aluminum oxide layer. Anodizing does not add an extra oxide layer to the substrate; rather, the process converts the top surface of aluminum metal into an oxide layer via an electrochemical reaction.
- the oxide layer typically has a larger volume than the surface aluminum prior to conversion, so the overall dimensions may increase.
- the anodizing layer effectively seals the top surface of the aluminum substrate and prevents any corrosive elements from reaching and reacting with the aluminum metal.
- the anodized layer For anodizing to work effectively as a corrosion barrier, the anodized layer needs to be both thick enough and free from defects. Defects in the anodized layer, such as cracks or pores that run through the entire thickness of the anodized layer, allow corrosive materials to reach the aluminum metal and, therefore, these defects act as sites for localized corrosion.
- Metal matrix composites typically include reinforcement particles dispersed in a metal matrix.
- metal matrix composites can be anodized.
- the anodization process is complicated by the presence of the reinforcement particles.
- the reinforcement particles are effectively inert to the chemicals in the anodizing bath and thus, during the anodizing process, the particles will become part of the anodized layer as well.
- Anodized layers typically have thicknesses in the range of from about 2 micrometers ( ⁇ m) to about 25 ⁇ m, while conventional reinforcement particles have an average particle size in the range of from about 3 ⁇ m to about 40 ⁇ m.
- the reinforcement particles it is possible for the reinforcement particles to bridge the anodized layer (i.e. extend entirely through the anodized layer) and act as paths/sites for local corrosion to occur when corrosive materials seep through the anodized layer.
- the reinforcement particles that bridge the anodized layer can also act as weak points and could provide nucleation sites for the anodized layer to delaminate during any mechanical loading.
- the present invention relates to composite articles including a substrate and an anodized layer according to claim 1.
- the anodized layer includes an aluminum or aluminum oxide matrix phase and a dispersed phase of reinforcement particles.
- the ratio of the thickness of the anodized layer to the average particle size (D50) of the reinforcement particles is at least 1.3.
- the combination of the thickness of the anodized layer and the average size of the reinforcement particles prevents defects in the anodized layer, such as bridges being formed by the reinforcement particles.
- the composite anodized layer will have improved wear resistance compared to conventional anodized layers.
- the articles include a substrate and an anodized layer.
- the substrate includes an aluminum or aluminum alloy matrix; and reinforcement particles dispersed in the matrix.
- the anodized layer includes an aluminum oxide matrix and reinforcement particles dispersed in the aluminum oxide matrix.
- the ratio of the thickness of the anodized layer to the average particle size (D50) of the reinforcement particles is at least 1.3.
- the ratio of the thickness of the anodized layer to the average particle size (D50) of the reinforcement particles may be at least 1.6, or at least 2, or at least 3.
- the thickness of the anodized layer is from about 1 ⁇ m to about 3 ⁇ m; and the average particle size is from about 0.3 ⁇ m to about 0.7 ⁇ m.
- the reinforcement particles may include at least one ceramic material selected from carbides, oxides, silicides, borides, and nitrides.
- the reinforcement particles include at least one ceramic material selected from silicon carbide, titanium carbide, boron carbide, silicon nitride, titanium nitride, and zirconium oxide.
- the aluminum alloy may include at least one element selected from chromium, copper, lithium, magnesium, manganese, nickel, and silicon.
- the aluminum alloy includes from about 91.2 wt% to about 94.7 wt% aluminum, from about 3.8 wt% to about 4.9 wt% copper, from about 1.2 wt% to about 1.8 wt% magnesium, and from about 0.3 wt% to about 0.9 wt% manganese.
- the aluminum alloy may include from about 95.8 wt% to about 98.6 wt% aluminum, from about 0.8 wt% to about 1.2 wt% magnesium, and from about 0.4 wt% to about 0.8 wt% silicon.
- the substrate includes from about 15 vol% to about 50 vol% of the reinforcement particles.
- articles comprising an anodized layer, wherein the anodized layer comprises: an aluminum oxide matrix; and reinforcement particles dispersed in the aluminum oxide matrix; and wherein a ratio of a thickness of the anodized layer to an average particle size (D50) of the reinforcement particles is at least 1.3.
- the methods include anodizing a surface of a substrate comprising a metal matrix composite to form an anodized layer on that surface.
- the metal matrix composite includes reinforcement particles dispersed in an aluminum or aluminum alloy matrix. The ratio of the thickness of the anodized layer to the average particle size (D50) of the reinforcement particles is at least 1.3.
- the anodizing may be performed using typical conditions for un-reinforced aluminum alloys.
- the anodizing may be performed at a voltage of about 10 volts to about 60 volts, including from about 10 to about 50 volts and from about 10 to about 20 volts.
- the anodizing may be performed for a time period of about 15 minutes to about 90 minutes.
- the anodizing may be performed at a bath temperature of about 15°C to about 30°C. Combinations of these process parameters are envisioned.
- the term “comprising” may include the embodiments “consisting of” and “consisting essentially of.”
- the terms “comprise(s),” “include(s),” “having,” “has,” “can,” “contain(s),” and variants thereof, as used herein, are intended to be open-ended transitional phrases, terms, or words that require the presence of the named components/steps and permit the presence of other components/steps.
- compositions or processes as “consisting of” and “consisting essentially of” the enumerated components/steps, which allows the presence of only the named components/steps, along with any impurities that might result therefrom, and excludes other components/steps.
- the present disclosure refers to particles having an average particle size.
- the average particle size is defined as the particle diameter at which a cumulative percentage of 50% (by volume) of the total number of particles are attained. In other words, 50% by volume of the particles have a diameter above the average particle size, and 50% by volume of the particles have a diameter below the average particle size.
- the size distribution of the particles will be Gaussian, with upper and lower quartiles at 125% and 75% of the stated average particle size, and all particles being less than 150% of the stated average particle size.
- the present disclosure relates to metal matrix composite articles including a substrate and an anodized layer.
- the anodized layer is formed by anodizing a surface of the substrate.
- the substrate includes (i) an aluminum or aluminum alloy matrix phase and (ii) a dispersed phase of reinforcement particles.
- the anodized layer includes (i) an aluminum oxide matrix formed from the underlying aluminum or aluminum alloy substrate and (ii) a dispersed phase of reinforcement particles.
- the reinforcement particles may have been originally located in the aluminum or aluminum alloy substrate prior to anodizing and may have been transferred to the anodized layer during anodizing.
- the ratio of the thickness of the anodized layer to the average particle size (D50) of the reinforcement particles is at least 1.3.
- Such articles can include aerospace or airborne optical parts, space parts, automotive parts, and consumer goods.
- FIG. 1 illustrates a prior art anodized metal matrix composite article 100 including a substrate 110 and an anodized layer 120.
- the metal matrix composite includes reinforcement particles 130 dispersed in a metal matrix 140.
- the reinforcement particles 130 are large relative to the thickness of the anodized layer 120. Consequently, reinforcement particle 130a bridges the anodized layer 120, or in other words extends entirely through the anodized layer.
- This localized defect in the anodized layer 120 leads to poor corrosion resistance and other properties.
- the substrate 110 is more susceptible to corrosion.
- FIG. 2 illustrates an anodized metal matrix composite article 200 in accordance with embodiments of the present disclosure.
- the article 200 includes a substrate 210 and an anodized layer 220.
- the metal matrix composite includes reinforcement particles 230 dispersed in a metal matrix 240.
- the reinforcement particles 230 are small relative to the thickness of the anodized layer 220. Consequently, the reinforcement particles 230 cannot span the entire thickness of the anodized layer 220. Localized defects in the anodized layer 220 are avoided and the corrosion resistance of the substrate 210 is enhanced.
- the anodized layer 220 comprises aluminum oxide and the reinforcement particles, and generally no aluminum.
- the substrate 210 is made of aluminum or an aluminum alloy, and contains reinforcement particles, and generally no aluminum oxide.
- the combination of the thickness of the anodized layer and the average size of the reinforcement particles prevents defects such as reinforcement particle bridges through the anodized layer.
- the formed anodized layer is a composite anodized layer formed from a "normal" anodized layer with hard ceramic particles distributed within the anodized layer.
- the composite anodized layer exhibits improved wear resistance compared to conventional anodized layers (i.e., anodized layers without reinforcement particles).
- finer reinforcement particles also allows for thinner anodized layers to be produced without having defects present in the anodized layer. This has advantages for tolerance critical components, where thicker anodized layers could cause critical dimensions to go out of specification. For example, a defect-free anodized layer with a thickness of from about 1 ⁇ m to about 3 ⁇ m could not be achieved with a material that contains 3- ⁇ m reinforcement particles because the particles could bridge the anodized layer, thereby creating sites for localized corrosion. However, defect-free anodized layers with a thickness of from about 1 ⁇ m to about 3 ⁇ m can be used if the reinforcement average particle size is from about 0.3 ⁇ m to about 0.7 ⁇ m.
- the resulting anodized layer has tubular pores that run through the thickness of the anodized layer, i.e. from the substrate to the top of the anodized layer, or through the entirety of the anodized layer.
- This type of anodized layer with tubular pores is generally referred to as "soft anodizing.”
- the porous anodized layer develops by a nucleation and growth process.
- FIG. 3 is a cross-sectional view of such a layer
- FIG. 4 is a top view of such a layer.
- the article 300 has a substrate 310 and an anodized layer 320.
- Tubular pores 305 run through the anodized layer from a first surface 312 of the substrate to a top or outer surface 322 of the anodized layer. As seen in FIG. 4 , these tubular pores can be distributed across the entire outer surface.
- the use of finer reinforcement materials interrupts the growth of tubular pores, producing a dense anodized layer without or with a reduced number of tubular pores.
- the overall tubular porosity of the anodized layer is reduced. This is illustrated in FIG. 5 and FIG. 6 .
- the presence of the reinforcement materials 330 cause the tubular pores 305 to be much shorter, and their occurrence to be much lower as well. They do not extend through the length of the anodized layer. This results in an anodized layer with higher hardness, higher wear resistance, improved electrical insulation, and improved fatigue properties for the final part.
- the fatigue performance is improved because the tubular pores can act as a crack initiation site for fatigue growth, and reducing eliminating them removes such crack initiation sites.
- the finer reinforcement particles are more effective than larger particles at preventing the growth of tubular pores because the spacing between particles can be much smaller.
- the finer reinforcement materials also allow high strengths to be achieved in heat treatments that allow low residual stress (high stability) conditions. Finer reinforcements also allow low and medium strength 2xxx and 6xxx alloys to be utilized as the matrix alloy and their strengths can be increased to levels equivalent to or greater than 7xxx aluminum alloys. Good corrosion and stress corrosion performance can be achieved as a result of the lower solute content matrix alloys. This results in strength and modulus increases which are useful for designing lightweight structural components.
- the finer reinforcement materials may also allow enhanced elevated temperature properties and/or strength stability after soaking at medium and high temperatures.
- the composite material includes from about 15 vol% to about 50 vol% of the reinforcement particles, including from about 17 vol% to about 50 vol% and from about 20 vol% to about 25 vol%.
- the aluminum alloy includes from about 91.2 wt% to about 94.7 wt% aluminum, from about 3.8 wt% to about 4.9 wt% copper, from about 1.2 wt% to about 1.8 wt% magnesium, and from about 0.3 wt% to about 0.9 wt% manganese.
- the aluminum alloy includes from about 95.8 wt% to about 98.6 wt% aluminum, from about 0.8 wt% to about 1.2 wt% magnesium, and from about 0.4 wt% to about 0.8 wt% silicon.
- the aluminum alloy may be 2124.
- the composition of 2124 aluminum alloy is as follows: Component Wt% Aluminum 91.2-94.7 Chromium Max 0.1 Copper 3.8-4.9 Iron Max 0.3 Magnesium 1.2-1.8 Manganese 0.3-0.9 Other, each Max 0.05 Other, total Max 0.15 Silicon Max 0.2 Titanium Max 0.15 Zinc Max 0.25
- the reinforcement particles may include at least one material selected from carbides, oxides, silicides, borides, and nitrides.
- the material is selected from silicon carbide, titanium carbide, boron carbide, silicon nitride, titanium nitride, and zirconium oxide.
- the metal matrix composite can be made by providing metal particles (e.g., aluminum or aluminum alloy particles) and reinforcement particles (e.g., ceramic particles) to a high energy mixing stage.
- metal particles e.g., aluminum or aluminum alloy particles
- reinforcement particles e.g., ceramic particles
- the metal and ceramic powders may be mixed with a high energy technique to distribute the ceramic reinforcement particles into the metal matrix.
- Suitable techniques for high energy mixing include ball milling, mechanical attritors, teamer mills, rotary mills and other methods to provide high energy mixing to the powder constituents.
- Mechanical alloying may be completed in an atmosphere to avoid excessive oxidation of powders preferable in an inert atmosphere using nitrogen or argon gas.
- the processing parameters may be selected to achieve an even distribution of the ceramic particles in the metallic matrix.
- the powder from the high energy mixing stage may be degassed to remove any retained moisture from the powder surface. Degassing may be completed at a temperature in the range of from about 120 to about 500 °C.
- a hot compacting step may also be performed to increase density and produce a billet.
- the hot compacting may be performed at a temperature in the range of from about 400 °C to about 600 °C, including from about 425 °C to about 550 °C and about 500 °C.
- Hot compaction may include the use of hot die compaction, hot isostatic pressing and/or hot extrusion.
- the pressure during the hot compacting may be in the range of from about 30 to about 150 MPa.
- the billet may be subsequently processed into a final article.
- This processing may include rolling, extrusion, machining, and/or forging.
- the billet is rolled, extruded, or forged into an intermediate article.
- Final machining (e.g., computer numerical control machining or CNC) may be performed on the intermediate article resulting in a final article.
- the billet or the final article can be used as a substrate and anodized to form an anodized layer on one or more surfaces of the substrate.
- the substrate is exposed to an anodizing bath, for example using chromic acid, sulphuric acid, phosphoric acid, organic acid, borate or tartrate, as is known in the art.
- the anodizing may be performed at a voltage of about 10 volts to about 20 volts.
- the anodizing may be performed for a time period of about 15 minutes to about 90 minutes.
- the anodizing may be performed at a bath temperature of about 15°C to about 30°C. Combinations of these process parameters are envisioned.
- Substrates including a metal matrix composite having 25 vol% of 3- ⁇ m (D50) silicon carbide particles dispersed in an aluminum alloy were anodized.
- FIG. 7 and FIG. 8 are optical microscope images of the substrate and anodized layer produced under anodizing conditions of 15 volts in a 20 °C bath temperature for 30 minutes with no dye.
- the anodized layer had a thickness of from about 2 ⁇ m to about 4 ⁇ m.
- Magnification was 500X for FIG. 7 and 1000X for FIG. 8 .
- FIG. 9 and FIG. 10 are optical microscope images of the substrate and anodized layer produced under anodizing conditions of 15 volts in a 20 °C bath temperature for 30 minutes with black dye.
- the anodized layer had a thickness of from about 2 ⁇ m to about 4 ⁇ m.
- Magnification was 500X for FIG. 9 and 1000X for FIG. 10 .
- FIG. 11 and FIG. 12 are optical microscope images of the substrate and anodized layer produced under anodizing conditions of 15 volts ramping up to 18 volts in a 25 °C bath temperature for 60 minutes with no dye (not within the scope of the claims).
- the anodized layer had a thickness of from about 8 ⁇ m to about 10 ⁇ m.
- Magnification was 500X for FIG. 11 and 1000X for FIG. 12 .
- FIG. 13 and FIG. 14 are optical microscope images of the substrate and anodized layer produced under anodizing conditions of 15 volts ramping up to 18 volts in a 25 °C bath temperature for 60 minutes with black dye (not within the scope of the claims).
- the anodized layer had a thickness of from about 8 ⁇ m to about 10 ⁇ m.
- Magnification was 500X for FIG. 13 and 1000X for FIG. 14 .
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Claims (9)
- Article composite comprenant :un substrat ; etune couche anodisée ;dans lequel le substrat comprend :une matrice en aluminium ou en alliage d'aluminium ; etdes particules de renforcement dispersées dans la matrice ;dans lequel la couche anodisée comprend :une matrice en oxyde d'aluminium ; etdes particules de renforcement dispersées dans la matrice en oxyde d'aluminium ;dans lequel le rapport de l'épaisseur de la couche anodisée à la granulométrie moyenne D50, définie par 50 % en volume des particules ayant un diamètre supérieur à la granulométrie moyenne, et 50 % des particules ayant un diamètre inférieur à la granulométrie moyenne, des particules de renforcement, est d'au moins 1,3 ;dans lequel le substrat comprend de 15 % en volume à 50 % en volume des particules de renforcement ; etdans lequel la granulométrie moyenne est de 0,3 µm à 0,7 µm, et dans lequel l'épaisseur de la couche anodisée est de 1 µm à 3 µm.
- Article selon la revendication 1, dans lequel le rapport est d'au moins 1,6, ou dans lequel le rapport est d'au moins 3.
- Article selon la revendication 1, dans lequel les particules de renforcement comprennent au moins un matériau céramique choisi dans le groupe constitué par les carbures, les oxydes, les siliciures, les borures et les nitrures, ou dans lequel les particules de renforcement comprennent au moins un matériau céramique choisi dans le groupe constitué par le carbure de silicium, le carbure de titane, le carbure de bore, le nitrure de silicium, le nitrure de titane, et l'oxyde de zirconium.
- Article selon la revendication 1, dans lequel l'alliage d'aluminium comprend au moins un élément choisi dans le groupe constitué par le chrome, le cuivre, le lithium, le magnésium, le manganèse, le nickel et le silicium, ou dans lequel l'alliage d'aluminium comprend de 91,2 % en poids à 94,7 % en poids d'aluminium, de 3,8 % en poids à 4,9 % en poids de cuivre, de 1,2 % en poids à 1,8 % en poids de magnésium, et de 0,3 % en poids à 0,9 % en poids de manganèse, ou dans lequel l'alliage d'aluminium comprend de 95,8 % en poids à 98,6 % en poids, de 0,8 % en poids à 1,2 % en poids de magnésium, et de 0,4 % en poids à 0,8 % en poids de silicium.
- Procédé pour produire un article composite selon la revendication 1, comprenant :l'anodisation d'une surface d'un substrat comprenant un composite de matrice métallique pour former une couche anodisée sur la surface ;dans lequel le composite de matrice métallique comprend des particules de renforcement dispersées dans une matrice en aluminium ou en alliage d'aluminium ;dans lequel le rapport de l'épaisseur de la couche anodisée à la granulométrie moyenne D50 des particules de renforcement est d'au moins 1,3 ;dans lequel le substrat comprend de 15 % en volume à 50 % en volume des particules de renforcement ;dans lequel la granulométrie moyenne est de 0,3 µm à 0,7 µm, et dans lequel l'épaisseur de la couche anodisée est de 1 µm à 3 µm.
- Procédé selon la revendication 5, dans lequel l'anodisation est effectuée sous une tension de 10 volts à 60 volts.
- Procédé selon la revendication 5, dans lequel l'anodisation est effectuée pendant une période de temps de 15 minutes à 90 minutes.
- Procédé selon la revendication 5, dans lequel l'anodisation est effectuée à une température de bain de 15°C à 30°C.
- Procédé selon la revendication 5, dans lequel le rapport est d'au moins 3.
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US201562146581P | 2015-04-13 | 2015-04-13 | |
PCT/US2016/027306 WO2016168311A1 (fr) | 2015-04-13 | 2016-04-13 | Composite à matrice anodisée |
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EP3283673A1 EP3283673A1 (fr) | 2018-02-21 |
EP3283673B1 true EP3283673B1 (fr) | 2019-10-02 |
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EP16718151.0A Active EP3283673B1 (fr) | 2015-04-13 | 2016-04-13 | Composite de matrice métallique anodisé |
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US (1) | US20160298254A1 (fr) |
EP (1) | EP3283673B1 (fr) |
WO (1) | WO2016168311A1 (fr) |
Cited By (1)
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WO2022046643A1 (fr) * | 2020-08-26 | 2022-03-03 | Lam Research Corporation | Anodisation pour composants de chambre de traitement de semi-conducteurs composites à matrice métallique |
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US20200032373A1 (en) * | 2018-07-25 | 2020-01-30 | Microsoft Technology Licensing, Llc | Aluminum-alloy composite suitable for anodization |
JP2022184365A (ja) * | 2021-06-01 | 2022-12-13 | トヨタ自動車株式会社 | 金属皮膜の成膜方法および金属皮膜の成膜装置 |
Citations (1)
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WO2012076467A2 (fr) * | 2010-12-06 | 2012-06-14 | Bang & Olufsen A/S | Procédé permettant d'obtenir un fini de surface de diffusion des rayonnements sur un objet |
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JPS62188796A (ja) * | 1986-02-14 | 1987-08-18 | Mazda Motor Corp | 繊維強化軽金属製複合部材の製造法 |
US4946500A (en) * | 1988-01-11 | 1990-08-07 | Allied-Signal Inc. | Aluminum based metal matrix composites |
US4889718A (en) * | 1988-05-02 | 1989-12-26 | Associated Universities, Inc. | Polyacid macromolecule primers |
GB9012810D0 (en) * | 1990-06-08 | 1990-08-01 | British Petroleum Co Plc | Method of treatment of metal matrix composites |
JPH06271903A (ja) * | 1993-03-16 | 1994-09-27 | Nippon Steel Corp | 高性能熱間圧延用ロール材料 |
US6398882B1 (en) * | 1996-01-31 | 2002-06-04 | Alcoa, Inc. | Uniformly dispersed, finely sized ceramic particles in metals and alloys |
DE19612109C1 (de) * | 1996-03-27 | 1997-11-20 | Bundesrep Deutschland | Lagerbauteil und Verfahren zu seiner Herstellung |
JP2008255410A (ja) * | 2007-04-04 | 2008-10-23 | Sumitomo Electric Ind Ltd | 放熱用材料及びその製造方法 |
US8173221B2 (en) * | 2008-03-18 | 2012-05-08 | MCT Research & Development | Protective coatings for metals |
CN202613307U (zh) * | 2009-08-25 | 2012-12-19 | 东芝照明技术株式会社 | 发光装置及照明装置 |
US20110048958A1 (en) * | 2009-09-02 | 2011-03-03 | Gm Global Technology Operations, Inc. | Methods of reducing surface roughness and improving oxide coating thickness uniformity for anodized aluminum-silicon alloys |
US9181629B2 (en) * | 2013-10-30 | 2015-11-10 | Apple Inc. | Methods for producing white appearing metal oxide films by positioning reflective particles prior to or during anodizing processes |
-
2016
- 2016-04-13 US US15/097,921 patent/US20160298254A1/en not_active Abandoned
- 2016-04-13 WO PCT/US2016/027306 patent/WO2016168311A1/fr active Application Filing
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WO2012076467A2 (fr) * | 2010-12-06 | 2012-06-14 | Bang & Olufsen A/S | Procédé permettant d'obtenir un fini de surface de diffusion des rayonnements sur un objet |
Non-Patent Citations (1)
Title |
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HE C ET AL: "Effect of size of reinforcement on thickness of anodized coatings on SiC/Al matrix composites", MATERIALS LETTERS, ELSEVIER, AMSTERDAM, NL, vol. 62, no. 16, 15 June 2008 (2008-06-15), pages 2441 - 2443, XP022611925, ISSN: 0167-577X, [retrieved on 20080104], DOI: 10.1016/J.MATLET.2007.12.016 * |
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WO2022046643A1 (fr) * | 2020-08-26 | 2022-03-03 | Lam Research Corporation | Anodisation pour composants de chambre de traitement de semi-conducteurs composites à matrice métallique |
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US20160298254A1 (en) | 2016-10-13 |
WO2016168311A1 (fr) | 2016-10-20 |
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