Steel coating application for engine block bores by Plasma Transferred Wire Arc spraying process
作者： Geoffrey Darut , Hanlin Liao , Christian. Coddet , Jean Michel Bordes , Moussa Diaby
DOI: 10.1016/J.SURFCOAT.2014.11.018
关键词:
摘要: Abstract Thermal spraying development for automotive industry grows since the end of nineteen nineties. In case engine blocks, bores were before plated by a chemical process or liners inserted in cylinders to ensure tribological performances. fact, aluminum has poor wear properties. Nowadays, lot research is conducted on reduction weight liner replacement. The main solution coating application directly cylinder bore. this way, reduced and design can be improved furthermore develop performance efficiency. Different processes are employed such as plasma, HVOF electrical arc. One them Plasma Transferred Wire Arc (PTWA) consisting plasma jet formed transferred arc between cathode wire. Its tip melted blown gas blast toward bore surface. This paper presents PTWA applied coating. Typical presented terms composition with two current intensities used. Tribological tests measurements done compared previous cast iron liner. Some technical problematic points around bores.
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