Ceramic and Cermet Coatings for Cylinder Liner in Ultra Light Weight Engines - Novel Processing and Manufacturing of Ceramic Layer Composites


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Actual requirements in the automotive industry are the reduction of fuel consumption and pollution emission, engine efficiency improvement, as well as cost reduction. Most of these requirements are fulfilled by reducing the total weight of the vehicle. This results in an increasing utilization of light metal components for engine applications. Significant weight savings are obtained by changing the engine block material from cast iron to aluminum or even to magnesium aluminum hybrid constructions. Despite of all advantages the industrial implementation of light metals is often inhibited by their poor surface properties especially concerning wear and tribological behavior. Due to the highly loaded operation conditions a cylinder liner surface reinforcement is necessary. A very promising technological alternative is the internal cylinder reinforcement by using HVOF (high velocity oxygen fuel) sprayed coatings. By using these advanced high energetic coating technologies, material combinations containing solid lubricant ceramic dispersions can be deposited. The thermal spray processes represent a cost effective and flexible solution for ultra light weight engine technology. This research is focused on the development of HVOF sprayed coating systems for cylinder liners, the coating optimization and the cost effective implementation of this hypersonic spray technology in a series production process. It will be shown that cast engine block bores can be directly coated by using an automated HVOF process, obtaining improved coating results. The internal coating process by hypersonic flame spraying is a superior technological alternative to the APS process for high quality cylinder liner and engine crankcase applications.



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R. Gadow et al., "Ceramic and Cermet Coatings for Cylinder Liner in Ultra Light Weight Engines - Novel Processing and Manufacturing of Ceramic Layer Composites", Advances in Science and Technology, Vol. 45, pp. 1330-1335, 2006

Online since:

October 2006




[1] Hinz R., Schwaderlapp M.: Potential zur Massenreduktion am Beispiel eines 4-ZylinderReihenmotors - Potential of mass reduction, e. g. for a 4 cylinder in line engine,; Leichtbau im Antriebsstrang (1996).

[2] Nassenstein K., Rickerby D., Gent J.: GTV/CTA-Universal Spray System to control HVOF Guns for the development of coatings used in the aerospace industry, 5th HVOF Colloquium High Velocity Oxy-Fuel Flame Spraying, Erding, Germany, (2000).

[3] Barbezat G., Keller S., Wuest G.: The advantages of the plasma spray process for the coating of cylinder bores on AlSi cast alloy in the automotive industry,; Conference Proceedings, United Thermal Spray Conference 1999, pp.10-14.

DOI: https://doi.org/10.4271/970016

[4] Buchmann, M.; Gadow, R.; Killinger, A.; López, D.: Verfahren und Vorrichtung zur Innenbeschichtung von Hohlräumen durch thermisches Spritzen, Deutsches Patent Nr. DE 102 30 847, AT: 04. 07. 2002, Erteilt am 05. 02. (2004).

[5] Candel, A.; Gadow, R.; López, D.; Advanced robot assisted manufacturing and control system for the internal HVOF series coating process of cylinder bores in light weight engine manufacturing, Compression Ignition and Spark Ignition Power Cylinder Systems, Society of Automotive Engineers, SAE 2004, ISBN 0-7680-1356-9, Paper 2004 - 01 - 0602, pp.29-34.

DOI: https://doi.org/10.4271/2004-01-0602

[6] Woydt M.: Materials-based concepts for an oil-free engine,; New Directions in Tribology (1997), pp.459-468.

[7] Woydt M., Skopp A., Dörfel I., Witke K.: Wear Engineering Oxides / Antiwear Oxides,; Tribology Transactions, Volume 42 (1999), pp.21-31.

DOI: https://doi.org/10.1080/10402009908982185

[8] Buchmann M., Gadow R.: Thermisch gespritzte, keramische Zylinderinnenbeschichtungen für modernen Leichtmetallkurbelgehäuse", DKG Handbuch "Technische keramische Werkstoffe, Jochen Kriegesmann 2001 Verlag Deutscher Wirtschaftsdienst. ISSN: 0937-2830.

[9] Buchmann M., Gadow R.: High Speed Circular Microhole Milling Method for the Determination of Residual Stresses in Coatings and Composites,; Ceramic Engineering and Science Proceedings Volume 21, Issue 3, pp.: 109 - 116, ISSN 0196-6219, (2000).

DOI: https://doi.org/10.1002/9780470294628.ch12

[10] Buchmann, M.; Gadow, R.; Killinger, A.; López, D.; Thermally Sprayed, Tribologically Effective Coating Systems on Light Alloy Cylinder Bores- Part 1 & 2, Galvanotechnik, Band 93, Heft 10 und 11 (Oktober/November) 2002, Hrsg. K. Reichert; Eugen G. Leuze Verlag, Bad Saulgau, ISSN 0016-4232 B 20696, S. 2660 - 2669 / 2942 - 2949.