Aluminium alloys are extensively used materials which can be found in all kinds of industrial applications. They have distinctive advantages such as a high strength/weight ratio, an excellent workability and a good corrosion behaviour. However, aluminium alloys have wear resistance properties which limitate further use of these alloys. Plasma transferred arc surfacing (PTA) using the DCCP-technology (Direct Current Combined Polarity) was used for enhancing wear properties of different aluminium alloys (AlMgSi0.5, AlSi12) by the formation of an alloyed layer with added ceramics. Hardness of the base material could be increased by more than two times while the wear resistance of the modified aluminium alloy was about ten times higher compared to the base material. Paper text in German.

Resistance seam surfacing is an economic alternative for thermal spraying especially for high abrasion wear on surfaces of simple geometry. First tests have shown that this process can also be used for producing wear protection layers on aluminium surfaces. The advantages of this process are very low energy costs, no danger for health, no loss of powder, a relatively low process temperature and a good quality of the layer. Paper text in German.

BIAS Bremen and SLV Rostock have received approval from the classification society "Germanischer Lloyd" for the novel manufacture and replacement of certain engine components with the powder-fed laser-beam plating process. This paper discusses the development of a procedure based on theoretical and experimental examinations on comparable test components. It is observed that, using this simulation tool, a reliable forecast of material conditions, which consequently emerge from the thermal cycle during laser surface treatment is possible. Paper includes a German-language abstract.