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.
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Issue Section:Industry and Applications