Multi-layer sliding-bearing element

A multi-layer sliding bearing element comprising

• a support layer;
• and
• a layer arranged thereon, said layer comprising an aluminum base alloy with aluminum as the main component, wherein the aluminum base alloy containG comprises:
• between 1.5 wt. % and 1.9 wt. % copper,
• between 0.6 wt. % and 1.0 wt. % manganese,
• between 0.08 wt. % and 0.18 wt. % cobalt,
• between 0.08 wt. % and 0.18 wt. % chromium,
• between 0.08 wt. % and 0.18 wt. % zirconium,
• in sum between 0.03 wt. % and 0.1 wt. % titanium, and at least one of scandium and additional zirconium, wherein the amount of at least one of scandium and additional zirconium is in sum between 0.015 wt. % and 0.05 wt. %, and
• between 0.2 wt. % and 0.4 wt. % silicon, and
• the balance adding up to 100 wt. % being constituted by aluminum and impurities potentially originating from the production of the elements,
• wherein the support layer comprises an iron-based alloy, and
• wherein the aluminum base alloy of the layer is connected directly to the iron-based support layer,
• wherein a further layer of a further aluminum base alloy is connected to the layer of the aluminum base alloy,
• wherein the further aluminum base alloy is silicon-free, and
• wherein the aluminum base alloy of the layer directly connected to the iron-based support layer and the further aluminum base alloy of the further layer with respect to the elements copper, manganese, cobalt, chromium, titanium and zirconium comprise the same relative quantitative proportions in terms of the respective share of aluminum.

A multi-layer sliding bearing element comprising:

• a support layer;
• and
• a layer arranged thereon, said layer comprising an aluminum base alloy with aluminum as the main component, wherein the aluminum base alloy comprises:
• between 1.5 wt. % and 1.9 wt. % copper,
• between 0.6 wt. % and 1.0 wt. % manganese,
• between 0.08 wt. % and 0.18 wt. % cobalt,
• between 0.08 wt. % and 0.18 wt. % chromium,
• wherein at least one of manganese, cobalt, and chromium is partially replaced by at least one of vanadium, molybdenum, and iron wherein the amount of vanadium, molybdenum, and iron is at most half the amount of the replaced element manganese, cobalt, and chromium,
• between 0.03 wt. % and 0.10 wt. % titanium,
• between 0.08 wt. % and 0.18 wt. % zirconium, and
• between 0.2 wt. % and 0.4 wt. % silicon, and
• the balance adding up to 100 wt. % being constituted by aluminum and impurities potentially originating from the production of the elements,
• wherein the support layer comprises an iron-based alloy,
• wherein the aluminum base alloy of the layer is connected directly to the iron-based support layer,
• wherein a further layer of a further aluminum base alloy is connected to the layer of the aluminum base alloy,
• wherein the further aluminum base alloy is silicon-free, and
• wherein the aluminum base alloy of the layer directly connected to the iron-based support layer and the further aluminum base alloy of the further layer with respect to the elements copper, manganese, cobalt, chromium, titanium and zirconium comprise the same relative quantitative proportions in terms of the respective share of aluminum.

A multi-layer sliding bearing element comprising a support layer and a layer arranged thereon, said layer comprising an aluminum base alloy with aluminum as the main component,

• wherein the aluminum base alloy comprises between 1.5 wt. % and 1.9 wt. % copper, between 0.6 wt. % and 1.0 wt. % manganese, between 0.08 wt. % and 0.18 wt. % cobalt, between 0.08 wt. % and 0.18 wt. % chromium, between 0.03 wt. % and 0.10 wt. % titanium, between 0.08 wt. % and 0.18 wt. % zirconium and between 0.2 wt. % and 0.4 wt. % silicon and the balance adding up to 100 wt. % being constituted by aluminum and impurities potentially originating from the production of the elements,
• wherein the support layer comprises an iron-based alloy, and
• wherein the aluminum base alloy of the layer is connected directly to the iron-based support layer, and
• wherein a further layer of a further aluminum base alloy is connected to the layer of the aluminum base alloy,
• wherein the further aluminum base alloy is silicon-free,
• wherein in the aluminum base alloy of the layer directly connected to the iron-based support layer and in the further aluminum base alloy of the further layer respectively, intermetallic precipitates are present, and
• wherein a medium size of the intermetallic precipitates in the aluminum base alloy of the layer directly connected to the iron-based support layer is smaller than a medium size of the intermetallic precipitates in the further aluminum base alloy of the further layer.