Researchers at the Institute of Metal Forming are working with companies in Vogtland on the future of musical instrument making in the region. They are getting to the bottom of zinc corrosion in metal wind instruments. The brass used in their construction consists of 30 per cent zinc and 70 per cent copper. As a result of the humid atmosphere, corrosion spots can form on the surface from the inside, leading to costly repairs and damage to the manufacturer's image. Investigations have shown that the alloy compositions and micro-cracks that occur during forming processes are the causes of the damage. The team has now developed an alloy with small amounts of phosphorus, nickel and tin that has better corrosion properties without impairing the acoustic properties and appearance. The prototype of a trumpet is being made from this in the Jürgen Voigt master workshop for metal wind instruments in Markneukirchen.

Tests will show whether the alloy is suitable for instrument making. The aim of the research is also to optimise forming processes in order to prevent microcracks. Further research should help to replace the harmful substances lead, nickel and chromium, which are present as alloy additives in brass materials for instrument making, with non-critical alloy concepts. There are still no alternatives. Modelling is also planned here following tests and simulations. The results will flow into a database and can be used in practice.