Korrosionsschutz von luftfahrtrelevanten Werkstoffen durch Ionenstrahlverfahren Schlussbericht

Abstract

The subject matter of the present project are investigations of new coating techniques and advanced coatings with regard to their corrosion control potential for aviation relevant metallic materials. These techniques were selected from the supply of available vapor deposition methods. The results obtained from aviation relevant materials (Al alloys, Ti alloys, staining and stainless steels) using the deposition methods IBAD, magnetron sputtering and arc deposition permit the following conclusions: In general, vapor deposited aluminum coatings with additions of Mg, Li, etc., substituting Cadmium/Chromium, are suitable for corrosion control of steels; using CrN or AlN as additional topcoat also ensures a good friction characteristic or simultaneous wearing protection; hardcoatings, in particular those containing carbon, on stainless steels and titanium alloys are resistant to artificial climates and offer very high wearing protection. In contact with aluminum, however, they lead to increased corrosion depending on their carbon content. Aluminum coatings can be applied to Al alloys with high adhesion at low temperatures by means of IBAD and magnetron sputtering. They are suitable as a substitute for Al platings on milled parts. (orig.)SIGLEAvailable from TIB Hannover: F95B1354+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Forschung und Technologie (BMFT), Bonn (Germany)DEGerman