Thermal Spraying of Nano-Crystalline Coatings for Al-Cylinder Bores

Document Number: 2008-01-1050

Date Published: April 2008

Author(s):
Clemens Verpoort - Ford Research Centre Aachen
Thomas Schlaefer - Aachen Univ.

Abstract:
The fuel consumption of modern passenger cars can be reduced by utilizing lightweight construction as well as by decreasing internal friction losses in the drive train. Modern engines therefore are made mostly of hypoeutectic AlSi alloys. Due to the low hardness, surfaces made of these alloys cannot be used as a friction partner for the piston rings. Cast iron liners are often inserted into the engine block to provide a wear-resistant surface for the piston rings. This work describes how cast iron liners can be replaced by thin, nanocrystalline iron-based coatings in order to decrease friction losses as well as reduce the engine weight. The coatings were applied by thermal spraying with the Plasma Transferred Wire Arc internal diameter coating system.

Product Status: In Stock

Included in: SP-2177

See other papers presented at SAE World Congress & Exhibition, April 2008, Detroit, MI, USA, Session: Nanotechnology for Automotive Applications (Part 2 of 3) - Nanostructured Materials and Coatings

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