Abstract No.:	3691
Scheduled at:	Wednesday, May 21, 2014, Hall H1 & H2 2:40 PM Automotive Industry 1
Title:	Study on PTWA process and application to car engine cylinder bores
Authors:	Geoffrey Darut* / UTBM, France Hanlin Liao/ IRTES - LERMPS, France Christian Coddet/ IRTES - LERMPS, France Jean Michel Bordes/ PSA Peugeot Citroën, France Moussa Diaby/ PSA Peugeot Citroën, France
Abstract:	Vehicle lightening and better energy efficiency are two main goals of automotive industry. In the matter of the engine science, friction parts are studied in order to decrease the energy losses. Its the case of piston liner assembly. Actually, Engines are composed of casting iron liner in aluminum blocks. But since 20 years, researches have been carried out on the replacement of these heavy liners by coatings technologies, especially by thermal spraying processes. One of them adapted to the coating manufacturing in cylinder bore is the plasma transferred wire arc (PTWA). This paper presents this spraying technology. A first part deals with the process by studying the droplet formation until the beginning of the coating. The second part deals with the coating characterization in cylinders with different operating parameters and the bonding strength on different surface activation (grit-blasting, mechanical roughing).

<= go back