# US 8,147,981 B2 · Alloy, in particular for a bearing coating

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- Number: US 8,147,981 B2
- Document ID: US8147981B2
- Status: Granted
- Kind: B2
- Application number: 12/927,676
- Filed: 2010-11-19
- Published: 2011-03-24
- Granted: 2012-04-03
- Earliest claimed: 2003-10-08
- Assignees: Miba Gleitlager GmbH
- Inventors: Hubert Lang; Thomas Rumpf
- Web page: https://patentgrep.com/patent/US8147981B2

## CPC

- C23C 28/027: {including at least one metal matrix material comprising a mixture of at least two metals or metal phases or metal matrix composites, e.g. metal matrix with embedded inorganic hard particles, CERMET, MMC.}
- C23C 24/04: Impact or kinetic deposition of particles
- C23C 28/028: {Including graded layers in composition or in physical properties, e.g. density, porosity, grain size}
- F16C 33/14: Special methods of manufacture; Running-in
- F16C 2204/12: with tin as the next major constituent
- F16C 2206/80: Cermets, i.e. composites of ceramics and metal
- F16C 2223/42: by spraying the coating material, e.g. plasma spraying
- F16C 2223/70: by electroplating or electrolytic coating, e.g. anodising, galvanising
- Y10T 428/12028: Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.]
- Y10T 428/12493: Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T 428/12576: Boride, carbide or nitride component
- Y10T 428/12611: Oxide-containing component
- Y10T 428/12667: Oxide of transition metal or Al
- Y10T 428/12708: Sn-base component
- Y10T 428/12736: Al-base component
- Y10T 428/12771: Transition metal-base component
- Y10T 428/12806: Refractory [Group IVB, VB, or VIB] metal-base component
- Y10T 428/12903: Cu-base component
- 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 (making metal-coated products by extrusion B21C23/22; covering with metal by connecting pre-existing layers to articles, see the relevant places, e.g. B21D39/00, B23K; metallising of glass C03C; metallising mortars, concrete, artificial stone, ceramics or natural stone C04B41/00; enamelling of, or applying a vitreous layer to, metals C23D; treating metal surfaces or coating of metals by electrolysis or electrophoresis C25D; single-crystal film growth C30B; by metallising textiles D06M11/83; decorating textiles by locally metallising D06Q1/04)
- F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

An alloy, in particular for an anti-friction coating, includes elements which form a matrix and at least a soft phase and/or a hard phase, which soft phase elements and/or hard phase elements form a solid solution or a bond with the matrix element. The soft phase and/or hard phase is dispersed in the matrix and the solid solution or bond is formed only in the region of the phase boundary of the matrix with the soft phase and/or with the hard phase.

## Claims

### Claim 1

A bearing element comprising a supporting layer and an anti-friction coating disposed on top of the supporting layer, wherein the anti-friction coating is made from an alloy consisting of alloy elements, the alloy consisting of first, second and third substances, wherein the first substance is a matrix element, the second substance is a soft phase element, and the third substance is a hard phase element, wherein the matrix element is selected from the group consisting of aluminum, chromium, copper, magnesium, manganese, molybdenum, nickel, silicon, tin, titanium, tungsten and zinc and the soft phase element is selected from an element group consisting of silver, aluminum, gold, bismuth, graphite, calcium, copper, indium, magnesium, lead, palladium, platinum, scandium, tin, yttrium, zinc and lanthanoids, wherein the soft phase element is different from the matrix element, said first, second and third substances forming a combination wherein the soft phase element and the hard phase element are dispersed in the matrix element and are present in their original composition in the matrix.

### Claim 2 (depends on 1)

The bearing element as claimed in claim 1, wherein the hard phase element is at least one element selected from an element group consisting of boron, carbon, cobalt, hafnium, iridium, molybdenum, niobium, osmium, rhenium, rhodium, ruthenium, silicon, tantalum, tungsten and zirconium.

### Claim 3 (depends on 1)

The bearing element as claimed in claim 1, wherein the hard phase element is selected from a group consisting of ZnS2, BN, WS2, SiC, WC, B4C, MgO, TiO2, ZrO2, Al2O3, and mixtures thereof.

### Claim 4 (depends on 1)

The bearing element as claimed in claim 1, wherein the alloy contains at least 55% by weight of the matrix element.

### Claim 5 (depends on 1)

The bearing element as claimed in claim 1, wherein the alloy contains between 10% by weight and 45% by weight of the soft phase element.

### Claim 6 (depends on 1)

The bearing element as claimed in claim 1, wherein the alloy contains between 3% by weight and 25% by weight of the hard phase element.