US20040177902A1 - Aluminium wrought alloy - Google Patents
Aluminium wrought alloy Download PDFInfo
- Publication number
- US20040177902A1 US20040177902A1 US10/798,082 US79808204A US2004177902A1 US 20040177902 A1 US20040177902 A1 US 20040177902A1 US 79808204 A US79808204 A US 79808204A US 2004177902 A1 US2004177902 A1 US 2004177902A1
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- US
- United States
- Prior art keywords
- weight
- aluminium
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- Prior art date
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- Abandoned
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- 239000004411 aluminium Substances 0.000 title claims abstract description 31
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 31
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 24
- 239000000956 alloy Substances 0.000 title claims abstract description 24
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 claims abstract description 28
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910052706 scandium Inorganic materials 0.000 claims abstract description 27
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 27
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910052718 tin Inorganic materials 0.000 claims abstract description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 21
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000010949 copper Substances 0.000 claims abstract description 17
- 229910052802 copper Inorganic materials 0.000 claims abstract description 17
- 239000002245 particle Substances 0.000 claims abstract description 14
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 13
- 239000010703 silicon Substances 0.000 claims abstract description 13
- 239000011159 matrix material Substances 0.000 claims abstract description 12
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052797 bismuth Inorganic materials 0.000 claims abstract description 10
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 10
- 239000011651 chromium Substances 0.000 claims abstract description 10
- 229910052742 iron Inorganic materials 0.000 claims abstract description 10
- 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 abstract description 10
- 229910052787 antimony Inorganic materials 0.000 claims abstract description 9
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052738 indium Inorganic materials 0.000 claims abstract description 9
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 8
- 239000010941 cobalt Substances 0.000 claims abstract description 8
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 8
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910000765 intermetallic Inorganic materials 0.000 claims abstract description 7
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 7
- 239000011777 magnesium Substances 0.000 claims abstract description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 5
- 239000011701 zinc Substances 0.000 claims abstract description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims description 42
- 230000001681 protective effect Effects 0.000 claims description 16
- 239000004033 plastic Substances 0.000 claims description 14
- 229920003023 plastic Polymers 0.000 claims description 14
- -1 polyarnide 66 Polymers 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 9
- 239000000314 lubricant Substances 0.000 claims description 6
- 230000001050 lubricating effect Effects 0.000 claims description 6
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 4
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims description 4
- 229920001296 polysiloxane Polymers 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229920002292 Nylon 6 Polymers 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 239000002966 varnish Substances 0.000 claims description 3
- 239000002033 PVDF binder Substances 0.000 claims description 2
- 239000000155 melt Substances 0.000 claims description 2
- 229910052961 molybdenite Inorganic materials 0.000 claims 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims 1
- 239000010410 layer Substances 0.000 description 58
- 239000011135 tin Substances 0.000 description 19
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 16
- 230000008901 benefit Effects 0.000 description 12
- 230000000694 effects Effects 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 229910052759 nickel Inorganic materials 0.000 description 8
- 229910000897 Babbitt (metal) Inorganic materials 0.000 description 7
- 229910000951 Aluminide Inorganic materials 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000001996 bearing alloy Substances 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 230000004888 barrier function Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 150000002739 metals Chemical class 0.000 description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000011856 silicon-based particle Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229910000906 Bronze Inorganic materials 0.000 description 3
- 229930040373 Paraformaldehyde Natural products 0.000 description 3
- 239000004642 Polyimide Substances 0.000 description 3
- 238000005275 alloying Methods 0.000 description 3
- 239000010974 bronze Substances 0.000 description 3
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 229920006260 polyaryletherketone Polymers 0.000 description 3
- 229920001721 polyimide Polymers 0.000 description 3
- 229920006324 polyoxymethylene Polymers 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 229910052720 vanadium Inorganic materials 0.000 description 3
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- 229920002302 Nylon 6,6 Polymers 0.000 description 2
- 229910001128 Sn alloy Inorganic materials 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910016343 Al2Cu Inorganic materials 0.000 description 1
- 241000531908 Aramides Species 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910000978 Pb alloy Inorganic materials 0.000 description 1
- 229920000265 Polyparaphenylene Polymers 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- YVIMHTIMVIIXBQ-UHFFFAOYSA-N [SnH3][Al] Chemical compound [SnH3][Al] YVIMHTIMVIIXBQ-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000002346 layers by function Substances 0.000 description 1
- LQBJWKCYZGMFEV-UHFFFAOYSA-N lead tin Chemical compound [Sn].[Pb] LQBJWKCYZGMFEV-UHFFFAOYSA-N 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- PYLLWONICXJARP-UHFFFAOYSA-N manganese silicon Chemical compound [Si].[Mn] PYLLWONICXJARP-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum 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
- 150000004767 nitrides Chemical class 0.000 description 1
- 238000007645 offset printing Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920000090 poly(aryl ether) Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229920006259 thermoplastic polyimide Polymers 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/12—Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
- F16C33/121—Use of special materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2204/00—Metallic materials; Alloys
- F16C2204/20—Alloys based on aluminium
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12486—Laterally noncoextensive components [e.g., embedded, etc.]
Definitions
- the invention relates to an aluminium wrought alloy with an aluminium matrix in which a soft phase and hard particles are incorporated, the soft phase being an element from a first group of elements consisting of tin, antimony, indium and bismuth and the hard particles being scandium and/or zirconium and at least one element from a second group of elements consisting of copper, manganese, cobalt, chromium, zinc, magnesium, silicon and iron, as well as scandium and/or zirconium or inter-metallic phases of scandium, zirconium with aluminium or aluminium with the elements from the second group, a base layer for a bearing element made therefrom, which can be disposed between a protective shell and a running layer of the bearing element, as well as a bearing element with a protective shell, a running layer and a base layer disposed in between.
- This type of bearing generally consists of a protective shell (usually made of steel) designed to absorb mechanical stress, on top of which a layer of the respective bearing alloy is applied.
- a protective shell usually made of steel
- Another thin coating also known as an “overlay”
- This other, very thin layer normally contains a very high proportion of so-called soft phases, such as lead or tin for example, which impart to this layer an ability to adapt to and embed abraded material from the parts to be mounted, such as shafts. Due to the fine thickness of this “overlay”, this layer is also mechanically capable of withstanding a sufficient degree of stress and serves as the so-called running layer.
- the bearing metal layer underneath ensures that the bearing also remains serviceable even if the running layer is extensively worn, for which purpose this bearing metal layer also contains an appropriate proportion of so-called soft phases.
- a barrier may be provided between the running and bearing metal to prevent migration, for example of tin. This diffusion barrier may be made from nickel.
- binding film between the protective shell and the bearing metal, in order to compensate for the properties specific to the materials of the two layers with a view to obtaining sufficient cohesion of the bearing, even when subjected to extensive stress.
- This binding film may be made from aluminium, for example.
- a bearing of this type is known from patent specification WO 98/17833 A.
- This WO-A patent describes in particular an aluminium alloy for a layer, specifically for a plain bearing, which is free of silicon except for the impurities resulting from the melting process, and, in addition to tin, contains as the main alloying element, at least one element each from the group of elements consisting of lead and bismuth on the one hand and from the group consisting of magnesium and zinc on the other.
- the minimum proportion of tin is 16% by weight. All the other elements in the alloy are limited to a total of at most 11% by weight.
- the proportion of the respective element from the group which also contains antimony and indium in addition to lead and bismuth is between 10% and 75% of the maximum solubility of the respective element by reference to the total tin content.
- aluminium alloys for plain bearings which contain tin as the main alloying element should contain an added hard substance selected from at least one element from the group of elements consisting of iron, manganese, nickel, chromium, cobalt, copper, platinum, magnesium and antimony in order to create inter-metallic phases, e.g.
- aluminides in the boundary regions of the matrix, in which case another element from a second group of elements consisting of manganese, antimony, chromium, tungsten, niobium, vanadium, cobalt, silver, molybdenum and zirconium should be added as a substitute for a part of at least one hard substance from the first group of elements in order to increase almost spherical or cuboid aluminides. This reduces the nicking effect of these hard particles, so that the aluminium alloy can contain a higher proportion of soft phases, which also specifically improves resistance to galling.
- This aluminium alloy also contains silicon in a quantity of from 0.2% by weight to 2.0% by weight and it is specified that the ratio of the proportion of copper as a percentage by weight to the proportion of nickel as a percentage by weight and the proportion of manganese as a percentage by weight to the proportion of silicon as a percentage by weight should be between 0.6 and 1.5.
- the silicon increases hardness and reduces susceptibility to corrosive wear, preventing the formation of coarse aluminium-copper-manganese phases, instead of which preferred nickel-copper-aluminides and manganese-silicon aluminides are formed. After a heat treatment at 250° C., these aluminides are also finely distributed.
- An aluminium-tin alloy containing 7% to 20% of tin is known from patent specification DE 43 32 433 A1.
- the bearing alloy additionally contains up to 4% silicon along with other alloying elements, such as manganese, magnesium, vanadium, nickel, chromium, zirconium, copper, antimony or titanium, for example.
- the mechanism whereby silicon causes the matrix to harden is said to be due to the fact that it crystallises out of the aluminium matrix in the form of silicon particles, which thereby increases the strength of the bearing alloy overall. Since the silicon particles are distributed throughout the structure, only the soft aluminium matrix at the surface becomes worn, so that the surface becomes microscopically uneven.
- the silicon particles left behind as convex particles are capable of withstanding a high load, whilst simultaneously preserving the property of not bonding.
- the concave parts hold the oil so that the bearing alloys are able to withstand high load provided they have a thin film of oil and are in metal-to-metal contact.
- the finely distributed silicon particles fulfil another finction in that they wear down minute irregularities and burrs on the co-operating shaft, thereby improving resistance to corrosive wear.
- An alloy described in both of the above-mentioned documents may contain, for example, 0.15% by weight to 1.0% by weight of scandium, a total of 3% by weight of one of the elements selected from manganese, copper or zirconium, a total of 4% by weight of one of the elements selected from chromium, iron and cobalt as well as tin in a quantity of up to 6.5% by weight.
- the hardening effect is based on the fact that scandium forms so-called A 3 M phases with aluminium and the finely dispersed distribution of these A 3 M phases imparts a high ductility to these alloys, which nevertheless exhibit no marked hardening behaviour.
- Patent specification DE 36 40 698 A1 discloses a bearing alloy with an aluminium base, which contains at least one element for the purpose of forming soft phases, selected from the group consisting of lead, tin, indium, antimony or bismuth, as well as silicon as a hard element and other reinforcing elements selected from the group consisting of copper, chromium, magnesium, manganese, nickel, zinc and iron, as well as refining elements from the group consisting of titanium, boron, zirconium, vanadium, gallium, scandium, yttrium and elements selected from the rare earths with atomic numbers 57 to 71.
- Patent specification DE 43 19 867 A discloses a multi-layer plain bearing, which, in addition to a protective shell of steel and an overlay containing polytetrafluoroethylene, contains 5% by volume to 30% by volume of a metal filler and 5% by volume to 40% by volume of polyvinylidene fluoride, and has a bearing layer of bronze, such as a tin bronze or tin-lead bronze, disposed in between.
- a bearing layer of bronze such as a tin bronze or tin-lead bronze
- a comparable multi-layer bearing is known from patent specification EP 0 005 560 A, onto the metal support layer of which a porous base layer is sintered, containing 5% by weight to 25% by weight of lead, 5% by weight to 15% by weight of tin, the rest being copper, with polytetrafluoroethylene in turn deposited in the pores of the base layer.
- the objective of the invention is to propose a multi-layer plain bearing of simplified structure and at least the same durable, tribological properties as conventional multi-layer plain bearings.
- the composition of the aluminium alloy proposed by the invention is such that the overlay can be applied directly onto the base layer, which is disposed on the protective shell, which is made from steel for example, which means that the conventionally used binding layer and the nickel barrier can be dispensed with.
- the composition also obviates the need for the lead bronzes used as standard in high-performance bearings, enabling the use of materials and metals which are as far as possible harmless in terms of their toxicity and suitability for recycling.
- the use of lead alloys can be dispensed with.
- the strength and in particular the dynamic strength of the resultant bond can be produced to higher values than is currently possible with standard three-layer bearings and using conventional steel/AlZn4,5 bonding.
- the tribological properties are also comparable with those of AlSn6CuNi.
- a further advantage is the high resistance to corrosion in contact with heavy oil and during use in gas-powered engines as well as resistance to cavitation as compared with AlZn4,5.
- the bond with steel can be produced without the need for an adhesion-imparting intermediate layer.
- the base layer may also be used for sputter bearings.
- Yet another advantage is the fact that the cost of manufacturing these types of bearing elements is comparable with that of existing standard multi-layer bearings of the same quality.
- the aluminium alloy proposed by the invention has the requisite resistance to galling due to its capacity for plastic deformation, enabling it to adapt to geometric faults and variations, i.e. even if faults occur in the overlay due to stress, the bearing element will still continue to be serviceable.
- An appropriate matrix toughness is obtained by means of the A 3 M phases of scandium and zirconium with aluminium known from the prior art.
- the proportion of soft phase in the aluminium alloy is at least 0.1% by weight and the proportion of the element(s) from the second group of elements represent(s) at least a total of 0.1% by weight, and the proportion of scandium and zirconium totals at least 0.05% by weight, in particular 0.1% by weight, whilst the proportion of zirconium is in the range of between 0.01% by weight and 0.5% by weight, in particular in the range of between 0.05% by weight and 0.23% by weight, and the proportion of scandium is between 0.05% by weight and 0.5% by weight, in particular in the range of from 0.05% by weight to 0.25% by weight.
- the base layer is disposed directly on the protective shell, which simplifies the structure accordingly.
- an alloy with a base of lead, tin, bismuth, indium or copper for the overlay or the overlay may be a layer of plastic, in particular selected from a group consisting of polyamide 6, polyamide 66, POM, silicone, PEK, PI, TPI, PEEK, PPS, PVDF, PTFE, as well as mixtures thereof, enabling the aluminium alloy proposed by the invention and the bearing element containing it to be adapted to a whole range of different applications.
- the layer of plastic contains a solid lubricant, such as MoS 2 , graphite or similar for example, in which case the bearing properties of this plastic layer will be further enhanced, enabling the bearing element to be used without any or with only the smallest quantities of lubricant, such as a lubricating oil or lubricating grease, for example.
- a solid lubricant such as MoS 2 , graphite or similar for example
- the overlay may also be provided in the form of a lubricating varnish.
- FIG. 1 illustrates a bearing element in the form of a plain bearing half-shell
- FIG. 2 is a table setting out various aluminium alloys proposed by the invention.
- FIG. 3 plots a comparison of tension-elongation values for various aluminium alloys.
- FIG. 1 illustrates a bearing element 1 proposed by the invention in the form of a plain bearing half-shell.
- bearing elements 1 in the form of plain bearing half-shells and may also be used for other bearing elements 1 of the type made from aluminium alloy, such as thrust rings, for example.
- bearing elements can be produced not only as half-shells but also as full shells.
- the bearing element 1 illustrated in FIG. 1 is made up of a protective shell 2 , a base layer 3 proposed by the invention and a running layer 4 .
- the protective shell 2 is usually made from steel, but may naturally also be made from other similar materials which fulfil the same or a similar function, that is to say will provide the mechanical strength required of the bearing element 1 .
- the mechanical strength of the bearing element 1 as a whole will depend on the respective application for which it will be used, and, this being the case, a whole variety of copper alloys may be used, such as brass, bronzes, for example.
- the protective shell 2 also imparts a certain degree of dimensional stability.
- the base layer 3 is made from the aluminium alloy proposed by the invention. It consists of an aluminium matrix incorporating at least one soft phase as well as hard particles.
- the at least one soft phase is at least one element selected from a group of elements consisting of tin, antimony, indium and bismuth.
- the hard particles are at least one element selected from a second group of elements consisting of copper, manganese, cobalt, chromium and iron or the elements scandium and/or zirconium. These hard particles might also be provided in the form of inter-metallic phases comprising the latter elements or the elements from the second group of elements with aluminium or inter-metallic phases comprising said elements.
- the soft phases on the one hand impart to the base layer 3 the capacity to form a strong enough bond with the running layer 4 disposed on top and on the other hand impart the requisite galling resistance to the bearing element 1 if faults occur in the running layer 4 whilst the bearing element 1 is in operation, thereby enabling the base layer 3 to come into almost direct contact with a component to be supported, such as a shaft, for example.
- the bearing element 1 is also rendered capable of embedding any hard particles which emerge due to wear when the bearing element 1 is in service. The hard particles impart the requisite mechanical strength to the aluminium alloy.
- Suitable alloys for the running layer 4 are those with a base of tin, bismuth, indium or aluminium and optionally with a lead base or an alloy with a base of CuPb and a high lead content. Tin alloys with a high content of tin offer particular advantages.
- Bearing metals with a lead base which might be used include, for example, PbSb10Sn6, PbSb15Sn10, PbSb15SnAs, PbSb14Sn9CuAs, PbSn10Cu2, PbSn18Cu2, PbSn10TiO2, PbSn9Cd, PbSn10.
- Bearing metals with a tin base include SnSb8Cu4 and SnSb12Cu6Pb, for example.
- the running layer 4 may also be made from a coating of plastic.
- plastic particularly advantageous examples are polyamide 6, polyamide 66, polyoxymethylene (POM), various silicones, polyaryl ether ketone (PEK), polyimide (PI), TPI, polyaryl ether ether ketone (PEEK), polyphenylene sulphide (PPS), polyvinylidene difluoride (PVDF), polytetrafluoroethylene (PTFE) and various mixtures thereof.
- additives may also be used in order to increase the mechanical strength of the plastic layer, such as fibre matrices, such as aramide fibres, for example, or hard substances such as carbides, oxides, nitrides, for example.
- the plastic layer may also be provided in the form of a so-called lubricating varnish.
- Said plastics enable running layers 4 with good sliding and anti-galling properties to be obtained, which may also be used dry. They are distinctive due to their low maintenance requirements. It is possible to operate with only a small quantity of lubricant or no lubricant at all. Water may optionally be used for lubricating purposes, which is of particular advantage if the bearing element 1 proposed by the invention is used for pumps, for example. Apart from offering a corresponding weight reduction, susceptibility to nicking has also been found to be low.
- the bearing element 1 proposed by the invention may also be used for a whole range of other applications and in particular can be used as a plain bearing or as a thrust ring in the automotive industry.
- the aluminium alloy proposed by the invention contains the element(s) from the first element group in a quantity totalling a maximum of 4.5% by weight, the element(s) from the second group of elements in a maximum quantity of 3.5% by weight, scandium and zirconium in a total quantity of. 0.8% by weight maximum, the rest being aluminium and the usual impurities resulting from the melt.
- the proportion of soft phase in other words the elements from the first group of elements, represent at least 0.1% by weight.
- the proportion of the element(s) from the second group of elements represent(s) a total of at least 0.1% by weight.
- the proportion of scandium and zirconium also represents a total of at least 0.1% by weight.
- the proportion of zirconium may be in the range of between 0.05% by weight and 0.5% by weight, in particular in the range of between 0.05% by weight and 0.23% by weight, and the proportion of scandium may be between 0.05% by weight and 0.5% by weight, in particular in the range of between 0.05% by weight and 0.25% by weight.
- Copper is absorbed in the aluminium as a solid solution, resulting in aluminium-rich mixed crystals, producing hardenable composite alloys, which are deformable and readily lend themselves to rolling. Copper also has the effect of strengthening the matrix due to the hardening of the mixed crystals, whereby Al 2 Cu and Al 3 Zr are formed independently of one another, preferably from aluminium and zirconium, so that the resultant nucleus formation is not heterogeneous. These crystallites start to separate more or less at the same time. Using copper increases the resistance of the aluminium alloy to fatigue and also improves the resistance of the aluminium alloy to corrosion due to the corrosive effect of oil-containing substances.
- Adding cobalt and chromium can also help to harden the aluminium alloy.
- compositions were made up as set out in table of FIG. 2 and their properties measured.
- bandwidth is meant that it is possible the adapt the properties to suit a specific purpose, for example by adding one or more elements in a greater or smaller proportion.
- a larger proportion of copper as specified in example 9 for example, higher toughness can be obtained due to mixed crystal hardening.
- the toughness behaviour and the properties of the aluminium alloy generally speaking can be optimised to suit the situation in terms of cost by varying the scandium or zirconium contents.
- An aluminium alloy was also produced on the basis of a composition comprisingAlSn1,3Sc0,2Zr0,26Fe0,1 and its tension-elongation behaviour measured and plotted in comparison with AlSn25CuMn and AlZn4SiPb.
- the result is set out in FIG. 3, in which the elongation ⁇ is plotted on the X axis and the nominal tensile stress ⁇ z [N/mm 2 ] on the Y axis.
- the measurements were conducted on strips prepared in accordance with UN EN1002-1 using tension samples E 3 ⁇ 8 ⁇ 30 mm as specified in DIN 50 120.
- the aluminium alloy proposed by the invention had an elongation of 0.1% compared with AlZn4SiPb (lowermost curve) and exhibited significantly higher values than AlSn25CuMn (middle curve) with effect from an elongation of 0.05%.
- the alloy proposed by the invention must be exposed to significantly higher forces or tensions, i.e. the aluminium alloy has a correspondingly higher strength than the aluminium alloys with which it was compared.
- the aluminium alloy and the bearing elements 1 made from it can be produced using methods known from the prior art. Pure elements or highly pure elements are used as the starting materials.
- the aluminium alloy can be applied to the protective shell by rolling, plating, e.g. electro-plating, for example.
- the running layer 4 can be disposed on this binding by said methods or alternatively by galvanic processes by spraying, etc..
- the plastic layer may also be applied by spraying, dipping or by offset printing. Galvanic processes could also be used.
- auxiliary intermediate layers may naturally also be provided between the individual functional layers, depending on requirements, such as diffusion barriers, pure aluminium layers, a nickel insulation. etc..
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- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Sliding-Contact Bearings (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA404/2003 | 2003-03-14 | ||
| AT0040403A AT412284B (de) | 2003-03-14 | 2003-03-14 | Aluminiumknetlegierung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US20040177902A1 true US20040177902A1 (en) | 2004-09-16 |
Family
ID=32234879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US10/798,082 Abandoned US20040177902A1 (en) | 2003-03-14 | 2004-03-11 | Aluminium wrought alloy |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20040177902A1 (show.php) |
| EP (1) | EP1475449B1 (show.php) |
| JP (1) | JP2004277883A (show.php) |
| KR (1) | KR100670228B1 (show.php) |
| CN (1) | CN1312304C (show.php) |
| AT (1) | AT412284B (show.php) |
| BR (1) | BRPI0400264B1 (show.php) |
| DE (1) | DE502004010629D1 (show.php) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005033353A3 (de) * | 2003-10-08 | 2006-01-26 | Miba Gleitlager Gmbh | Legierung, insbesondere für eine gleitschicht |
| WO2008074344A1 (en) * | 2006-12-19 | 2008-06-26 | Mahle International Gmbh | Sliding bearing |
| US20080187260A1 (en) * | 2005-09-20 | 2008-08-07 | Ks Gleitlager Gmbh | Composite antifriction bearing material |
| US20110036267A1 (en) * | 2008-04-30 | 2011-02-17 | Ulvac, Inc. | Water-reactive al composite material, water-reactive al film, process for the production of the al film , and constituent member for film-forming chamber |
| CN104819209A (zh) * | 2014-01-31 | 2015-08-05 | 米巴滑动轴承有限公司 | 多层滑动轴承 |
| US10513766B2 (en) | 2015-12-18 | 2019-12-24 | Novelis Inc. | High strength 6XXX aluminum alloys and methods of making the same |
| US10538834B2 (en) | 2015-12-18 | 2020-01-21 | Novelis Inc. | High-strength 6XXX aluminum alloys and methods of making the same |
| US11719279B2 (en) | 2018-12-05 | 2023-08-08 | Schaeffler Technologies AG & Co. KG | Pivot bearing |
| US11814701B2 (en) | 2017-03-08 | 2023-11-14 | NanoAL LLC | High-performance 5000-series aluminum alloys |
| US11885002B2 (en) | 2017-03-30 | 2024-01-30 | NanoAL LLC | High-performance 6000-series aluminum alloy structures |
| US11932928B2 (en) | 2018-05-15 | 2024-03-19 | Novelis Inc. | High strength 6xxx and 7xxx aluminum alloys and methods of making the same |
| US12492453B2 (en) | 2018-06-20 | 2025-12-09 | NanoAL LLC | High-performance Al—Zn—Mg—Zr base aluminum alloys for welding and additive manufacturing |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT414128B (de) | 2004-08-03 | 2006-09-15 | Miba Gleitlager Gmbh | Aluminiumlegierung für tribologisch beanspruchte flächen |
| DE102005063324B4 (de) * | 2005-05-13 | 2008-02-28 | Federal-Mogul Wiesbaden Gmbh & Co. Kg | Gleitlagerverbundwerkstoff, Verwendung und Herstellungsverfahren |
| DE102005059544A1 (de) * | 2005-12-13 | 2007-06-14 | Ecka Granulate Gmbh & Co. Kg | Sn-haltige hochbelastbare Materialzusammensetzung; Verfahren zur Herstellung einer hochbelastbaren Beschichtung und deren Verwendung |
| KR101526660B1 (ko) | 2013-05-07 | 2015-06-05 | 현대자동차주식회사 | 복합 미세조직을 갖는 내마모성 합금 |
| KR101526661B1 (ko) | 2013-05-07 | 2015-06-05 | 현대자동차주식회사 | 복합 미세조직을 갖는 내마모성 합금 |
| KR101526656B1 (ko) | 2013-05-07 | 2015-06-05 | 현대자동차주식회사 | 복합 미세조직을 갖는 내마모성 합금 |
| KR101526659B1 (ko) * | 2013-05-07 | 2015-06-05 | 현대자동차주식회사 | 복합 미세조직을 갖는 내마모성 합금 |
| EP2902647A1 (en) * | 2014-02-03 | 2015-08-05 | Siemens Aktiengesellschaft | Bearing having a raceway with high chromium content |
| DE102019000361A1 (de) | 2019-01-18 | 2020-07-23 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verschleißbeständige Leichtbaulegierung aus einem Metall-Matrix-Verbundwerkstoff mit einer metallischen Matrix und einer keramischen Hartphase, Verfahren zur Herstellung einer solchen verschleißbeständigen Leichtbaulegierung, und Bremsscheibe mlt einer solchen verschleißbeständigen Leichtbaulegierung |
| CN110819852A (zh) * | 2019-10-30 | 2020-02-21 | 全球能源互联网研究院有限公司 | 一种耐热性好的高导电率软铝单丝及其制备方法 |
| GB2607887B (en) * | 2021-06-11 | 2024-07-03 | Mahle Int Gmbh | Sliding element with intermediate layer |
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| GB2067220B (en) * | 1980-01-08 | 1984-04-18 | Taiho Kogyo Co Ltd | Aluminium-tin base bearing alloy |
| GB2066846B (en) * | 1980-01-08 | 1984-02-29 | Taiho Kogyo Co Ltd | Aluminium-tin base bearing alloy |
| JPS6263636A (ja) * | 1985-09-17 | 1987-03-20 | Taiho Kogyo Co Ltd | アルミニウム軸受合金 |
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| JP3185219B2 (ja) * | 1990-11-30 | 2001-07-09 | 大豊工業株式会社 | アルミニウム系軸受合金 |
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- 2004-02-13 DE DE502004010629T patent/DE502004010629D1/de not_active Expired - Lifetime
- 2004-03-10 BR BRPI0400264-4A patent/BRPI0400264B1/pt not_active IP Right Cessation
- 2004-03-11 US US10/798,082 patent/US20040177902A1/en not_active Abandoned
- 2004-03-12 CN CNB2004100284762A patent/CN1312304C/zh not_active Expired - Fee Related
- 2004-03-15 JP JP2004072923A patent/JP2004277883A/ja active Pending
- 2004-03-15 KR KR1020040017460A patent/KR100670228B1/ko not_active Expired - Fee Related
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| US6706126B2 (en) * | 1998-10-09 | 2004-03-16 | Taiho Kogyo Co., Ltd. | Aluminum alloy for sliding bearing and its production method |
| US6638375B2 (en) * | 2000-07-26 | 2003-10-28 | Daido Metal Company Ltd. | Aluminum bearing alloy |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8147981B2 (en) | 2003-10-08 | 2012-04-03 | Miba Gleitlager Gmbh | Alloy, in particular for a bearing coating |
| US7879453B2 (en) | 2003-10-08 | 2011-02-01 | Miba Gleitlager Gmbh | Alloy, in particular for a bearing coating |
| WO2005033353A3 (de) * | 2003-10-08 | 2006-01-26 | Miba Gleitlager Gmbh | Legierung, insbesondere für eine gleitschicht |
| US20110071061A1 (en) * | 2003-10-08 | 2011-03-24 | Miba Gleitlager Gmbh | Alloy, in particular for a bearing coating |
| US20080187260A1 (en) * | 2005-09-20 | 2008-08-07 | Ks Gleitlager Gmbh | Composite antifriction bearing material |
| WO2008074344A1 (en) * | 2006-12-19 | 2008-06-26 | Mahle International Gmbh | Sliding bearing |
| US20100047605A1 (en) * | 2006-12-19 | 2010-02-25 | Christiane Knoblauch | Sliding bearing |
| US8715404B2 (en) * | 2008-04-30 | 2014-05-06 | Ulvac, Inc. | Water-reactive Al composite material, water-reactive Al film, process for the production of the Al film, and constituent member for film-forming chamber |
| US20110036267A1 (en) * | 2008-04-30 | 2011-02-17 | Ulvac, Inc. | Water-reactive al composite material, water-reactive al film, process for the production of the al film , and constituent member for film-forming chamber |
| CN104819209A (zh) * | 2014-01-31 | 2015-08-05 | 米巴滑动轴承有限公司 | 多层滑动轴承 |
| US10513766B2 (en) | 2015-12-18 | 2019-12-24 | Novelis Inc. | High strength 6XXX aluminum alloys and methods of making the same |
| US10538834B2 (en) | 2015-12-18 | 2020-01-21 | Novelis Inc. | High-strength 6XXX aluminum alloys and methods of making the same |
| US11920229B2 (en) | 2015-12-18 | 2024-03-05 | Novelis Inc. | High strength 6XXX aluminum alloys and methods of making the same |
| US12043887B2 (en) | 2015-12-18 | 2024-07-23 | Novelis Inc. | High strength 6xxx aluminum alloys and methods of making the same |
| US11814701B2 (en) | 2017-03-08 | 2023-11-14 | NanoAL LLC | High-performance 5000-series aluminum alloys |
| US11885002B2 (en) | 2017-03-30 | 2024-01-30 | NanoAL LLC | High-performance 6000-series aluminum alloy structures |
| US11932928B2 (en) | 2018-05-15 | 2024-03-19 | Novelis Inc. | High strength 6xxx and 7xxx aluminum alloys and methods of making the same |
| US12492453B2 (en) | 2018-06-20 | 2025-12-09 | NanoAL LLC | High-performance Al—Zn—Mg—Zr base aluminum alloys for welding and additive manufacturing |
| US11719279B2 (en) | 2018-12-05 | 2023-08-08 | Schaeffler Technologies AG & Co. KG | Pivot bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| BRPI0400264B1 (pt) | 2011-08-23 |
| KR100670228B1 (ko) | 2007-01-17 |
| EP1475449A1 (de) | 2004-11-10 |
| JP2004277883A (ja) | 2004-10-07 |
| BRPI0400264A (pt) | 2004-12-28 |
| AT412284B (de) | 2004-12-27 |
| CN1312304C (zh) | 2007-04-25 |
| KR20040081079A (ko) | 2004-09-20 |
| CN1532299A (zh) | 2004-09-29 |
| DE502004010629D1 (de) | 2010-03-04 |
| EP1475449B1 (de) | 2010-01-13 |
| ATA4042003A (de) | 2004-05-15 |
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