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International Journal of Automotive Technology > Volume 2(2); 2001 > Article
International Journal of Automotive Technology 2001;2(2): 47-52.
THE STATE OF THE ART OF THE INTERNAL PLASMA SPRAYING ON CYLINDER BORE IN AlSi CAST ALLOYS
G. BARBEZAT
Sulzer Metco AG
ABSTRACT
For the wear protection of cylinder bore in aluminum cast material the internal plasma spraying technology offers a new economical solution. The size and the weight of the engine blocks significantly can be decreased in comparison with the traditional cast iron sleeves. The coefficient of friction between piston ring and cylinder wall sensitively can be reduced and the wear resistance increased from several factors. The paper gives an overview of the technology from the AlSi cast alloys for engine block to the non destructiv testing technology used after the machining by diamond honing. The actual results in engines of different types also will be shown. The economical advantages of the plasma spraying for the internal coating in cylinder bore also will be discussed in comparison with the different alternatives of technology. The aspect of the market introduction also will be discussed in this paper.
Key Words: Plasma spraying, cylinder bore, Coefficient of friction, diamond honing
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