Different thermal spray processes are being used to provide coatings for cylinder bores in automotive engines. The internal plasma spraying technology described in this paper applies protective layers to cylinder surfaces in engine blocks made of AlSi cast alloys. This method enables a significant reduction in the coefficient of friction, a reduction in oil consumption, and an increase in wear resistance compared to cast iron, the standard material for cylinder liners. Paper includes a German-language abstract.

This paper provides a sampling of current and emerging applications for thermal spraying both in manufacturing and in equipment repair. As the examples show, thermal spraying is making an impact in many areas of industry, including automotive, aviation, biomedical, energy, printing, pulp and paper, and textiles, as well as in military and defense. Paper text in German.

Titanium dioxide has promising photocatalytic properties that can be used in the treatment and purification of air and water. The aim of this study is to determine how process parameters and oxides added to generate anastasis affect the microstructure and surface properties of plasma sprayed TiO 2 . The photocatalytic effect of the layers and the influence of microstructure are investigated with the help of acetaldehyde degradation. The results show that the layers produced consist of anatase (3-15%) and rutile components. It has been proven that TiO 2 is capable of decomposing acetaldehyde under UV radiation in proportion to the amount of anatase present. Paper includes a German-language abstract.

This paper describes an arc spraying process developed for the production of metalized film capacitors. It discusses the role of metal spraying in capacitor manufacturing, the basics of thermal spraying, and the function of various components in a wire arc spraying system. It also reviews the production steps typically used for capacitor end spray. Paper includes a German-language abstract.

Turbine entrance temperatures in the latest high-efficiency jet engines rise to more than 1773 K, which significantly raises the bar for thermal barrier coatings (TBCs). This paper describes a ternary coating system consisting of a vacuum plasma sprayed NiCrAlY bond coat, an atmospheric plasma sprayed ZrO 2 top coat, and a MoSi 2 middle coat. The middle layer inhibits oxidation of the nickel-chromium bond coat, thus extending the service life of the TBC system. Paper includes a German-language abstract.

Although thermally sprayed aluminum (TSA) has come to be recognized as an effective corrosion protection treatment, its use has been limited to off-shore structures. The fact that TSA coatings were unsuccessful as an alternative to traditional organic coatings has more to do with economics than technology. This paper presents life cycle cost models that justify the much higher level of investment required with TSA spraying while accounting for its ecological advantages in terms of energy, waste, and volatile emissions. Paper includes a German-language abstract.

This paper investigates the potential of radio frequency thermal plasma chemical vapor deposition for producing Sr-doped La-Mn-perovskite and yttria-doped zirconia layers for solid-oxide fuel cells. Aqueous solutions were used as starting materials and were injected into the hot plasma core by means of an air-assist atomizer. Test results show how the microstructure, dopant distribution, and phase purity of the resulting layers depends both on process conditions and the material system. Paper includes a German-language abstract.

Crystallized calcium carbonate, CaCO 3 , is a mineral phase that occurs in nature as aragonite. It is well known that CaCO 3 shows excellent chemical interaction and intensive binding in direct contact to bone structures. This paper discusses the development of a plasma spraying process that shows promise for producing dense calcium carbonate layers with good adhesion properties. Tests reveal that the resulting coatings are fully biocompatible and have faster resorption times than plasma sprayed hydroxyapatite. Paper includes a German-language abstract.