This paper examines HVOF-sprayed Al 2 O 3 -SiC layer systems of differing compositions. The coatings are characterized based on SEM, EDX, and XRD analysis, fracture toughness measurements, and tribological testing. The influence of SiC on mechanical properties is also assessed and a comparison is made with standard alumina coatings. Paper text in German.

Intermetallic TiAl coatings were applied to ferritic steels using plasma and HVOF spraying methods. The specimens were then placed in reducing sulfidizing atmospheres for high-temperature corrosion testing. This paper describes the experiments that were performed and presents and analyzes the results. In general, for the reasons given, the coatings performed better in an Ar-H 2 -H 2 S-atmosphere than in one containing CH 4 . Paper text in German.

This paper describes a powerful new approach, based on optical emission spectroscopy, for monitoring thermal spraying processes and coating quality. Through online analysis of the emitted process spectra, users can track variations in the running process as well as in the coatings produced. As proven in numerous studies, all relevant process parameters can be separated and detected using OES techniques, and recent work indicates that the method is applicable to all thermal spray processes. Paper text in German.

This paper assesses the potential of thermal spraying in the context of rapid production tooling. The tooling described, which is intended for sheet metal forming, overcomes the limitations of rapid tooling techniques by leveraging the benefits of rapid prototyping and thermal spray technologies. Paper text in German.

A spectroscopic measurement system has been developed and used for thermal spray applications. The system provides on¬line information of the process and allows the determination of process fluctuations over various time scales. Paper text in German.