Metallic composite material for a sliding bearing comprising a metallic support layer
A metallic composite material for a sliding bearing ( 2 ) has a metallic support layer ( 4 ), in particular steel, and a bearing metal layer ( 6 ) based on copper-tin with 2-6 wt. % tin. The bearing metal layer ( 6 ) has 0.2-2 wt. % nickel. A sliding bearing element, which is to be used in or close to the motor, can be produced from this type of sliding bearing composite material ( 2 ).
1. A metallic composite material for a sliding bearing, the composite material comprising:
a metallic support layer; and
a bearing metal layer on a copper-tin basis with 2-6 weight % of tin and 0.2 to 2 weight % of nickel, wherein said bearing metal layer has a tin content which is at least three times a nickel content thereof, wherein said bearing metal layer additionally comprises 0.4 to 1.5 weight % of zinc and 0.2 to 1 weight % of silver.
2. The composite material for a sliding bearing of claim 1 , wherein said tin content is at least four times said nickel content.
3. The composite material for a sliding bearing of claim 1 , wherein said bearing metal layer comprises 0.2 to 1.5 weight % of nickel.
4. The composite material for a sliding bearing of claim 1 , wherein said bearing metal layer comprises 2.0 to 5.5 weight % of tin.
5. The composite material for a sliding bearing of claim 1 , wherein said bearing metal layer is formed by a CuSn4.5Zn0.8Ni0.6Ag0.4 alloy.
6. The composite material for a sliding bearing of claim 1 , wherein said bearing metal layer is a sinter layer that is formed from rounded particles.
7. The composite material for a sliding bearing of claim 6 , wherein a porosity of said bearing metal layer is at most 2%.
8. The composite material for a sliding bearing of claim 1 , wherein a production of the composite material is followed by reshaping through rolling and, subsequent thereto, by heat treatment between 450° C. and 520° C.
9. A sliding bearing element for applications in a motor, for a main bearing shell or for a connecting rod bearing shell, wherein the sliding bearing element is produced from the composite material for a sliding bearing of claim 1 .
10. A metallic composite material for a sliding bearing, the composite material consisting of:
a metallic support layer; and
a bearing metal layer on a copper-tin basis with 2-6 weight % of tin and 0.2 to 2 weight % of nickel, wherein said bearing metal layer has a tin content which is at least three times a nickel content thereof, wherein said bearing metal layer additionally comprises 0.4 to 1.5 weight % of zinc and 0.2 to 1 weight % of silver.
11. The composite material for a sliding bearing of a claim 10 , wherein a production of the composite material is followed by reshaping through rolling and, subsequent thereto, by heat treatment between 450° C. and 520° C.
12. The composite material for a sliding bearing of claim 11 , wherein a hardness of said bearing metal layer after heat treatment is between 70 HBW 1/10/10 and 100 HBW 1/10/10.
13. A sliding bearing element for applications in a motor, for a main bearing shell or for a connecting rod bearing shell, wherein the sliding bearing element is produced from the composite material for a sliding bearing of claim 10 .
14. The sliding bearing element of claim 13 , wherein, after shaping of the composite material for a sliding bearing for forming the sliding bearing element, a hardness of said bearing metal layer is at most 160 HBW 1/10/10 and at least 100 HBW 1/10/10.
15. The sliding bearing element of claim 9 , wherein an additional coating is provided on a side of said bearing metal layer facing a sliding partner in a form of a sputtered layer on a basis of aluminum, on a basis of aluminum-tin, on a basis of tin or tin-copper, of bismuth or on a basis of bismuth or in a form of a galvanic coating on a basis of tin or tin-copper, of bismuth or on a basis of bismuth or in a form of a sliding lacquer on a basis of polymers of PAI or with further tribologically effective fillers such as graphite, MoS 2 , TiO 2 , ZnS or hexagonal boron nitride.