Abstract: Internal combustion engine with bearing shells, which are formed essentially by thermal sprayed bearing layers, wherein the thermal sprayed bearing layers are formed by at least two slide bearing materials with different hardness, which are spatially separated from each other and are provided on the outer surface of the bearing shell, as well as process for production of bearing shells for internal combustion engines including the steps: mechanical conditioning of the bearing surface coating of the bearing surface with the materials of the bearing shell by thermal spray processes finishing flattening processing of the applied layer wherein as bearing shell at least two slide bearing materials with different hardness were deposited separated spatially from each other, wherein the materials are in contact with each other via interlayers or joint layers.

Abstract: Slide layers, in bearing shells or exhaust gas turbo chargers of internal combustion engines, formed by a metal matrix with embedded polymer or embedded polymer and ceramic, as well as methods for production for this type of slide layers by means of a thermal spray process, in particular arc wire spray processes (LDS) wherein the substantial proportion of the metallic spray material is introduced prior to the spray nozzle, and the polymer spray material in powder or wire form is introduced into the spray stream subsequent to the spray nozzle using a supply device.

Abstract: Process for arc wire spraying for depositing material layers, in particular slide bearing layers, wherein at least one oxygen containing atomizing gas and one fuel gas are supplied to the spray device, which are combusted in a burn chamber in the immediate vicinity or behind the arc under the influence of a part of the oxygen containing atomizing gas and following the exit from the nozzle a flame jet or spout produces wherein that by the oxidation of the metallic components of the spray wire a metal oxide layer is formed at least on the outer surface of the spray droplets, as well as material layers, in particular bearing layers, of Cu-containing alloys with metal oxide microstructure segregated areas, wherein the material exhibits a lamella like microstructure of thicker lamellas of Cu-alloys and thinner lamellas of metal oxide, wherein the lamellas are oriented primarily parallel to the substrate of the base material.

Abstract: Internal combustion engine with bearing shells, which are formed essentially by thermal sprayed bearing layers, wherein the thermal sprayed bearing layers are formed by at least two slide bearing materials with different hardness, which are spatially separated from each other and are provided on the outer surface of the bearing shell, as well as process for production of bearing shells for internal combustion engines including the steps: mechanical conditioning of the bearing surface coating of the bearing surface with the materials of the bearing shell by thermal spray processes finishing flattening processing of the applied layer wherein as bearing shell at least two slide bearing materials with different hardness were deposited separated spatially from each other, wherein the materials are in contact with each other via interlayers or joint layers.

Abstract: Hard mechanical coatings applied by thermal spray application onto softer surfaces frequently exhibit insufficient adhesion, so that undesired defoliations occur. It is the task of the present invention to provide a coating with optimal mechanical load bearing capacity and adhesion, as well as a simplified process for production thereof. The task is solved in that a gradient layer is applied by arc wire spraying upon a surface, wherein during the spray application at least one of the process parameters (a) current strength or voltage of the arc or (b) gas pressure of the carrier gas is varied.