Design of Polymer Coatings in Automotive Engines
来源期刊：材料保护2004年增刊第2期
论文作者：BORDES Jean-Michel ZHANG Ga CHRISTIAN Coddet LIAO Han-lin
关键词：PEEK; thermal spray; serigraphy; coating; friction; wear;
摘 要：Driven by economical and ecological reasons, thermoplastics based coatings were more and more used in automotive engines. Two design concepts, flame spraying and serigraphy PEEK coatings on light metal substrate, were introduced in this paper. The friction and wear behavior of PEEK based coatings were investigated systematically. Coatings with different crystallinities can be obtained when cooling speed is controlled. Among three sprayed coatings considered with different crystallinities, the one with highest crystallinity exhibits best friction and wear behavior under dry sliding condition. Under lubricated sliding condition, however, the amorphous coating gives lower friction coefficient. The micron particles such as SiC,MoS2 and graphite in composite coatings can improve significantly the coating wear resistance and have a impact on coating friction behavior.
BORDES Jean-Michel1，ZHANG Ga2，CHRISTIAN Coddet2，LIAO Han-lin2
(1.Technical Center of Belchamp 25420 Voujeaucourt, PSA Peugeot Citroen, France;
2.LERMPS-UTBM,Site de sevenans, 90100, Belfort)
摘要:Driven by economical and ecological reasons, thermoplastics based coatings were more and more used in automotive engines. Two design concepts, flame spraying and serigraphy PEEK coatings on light metal substrate, were introduced in this paper. The friction and wear behavior of PEEK based coatings were investigated systematically. Coatings with different crystallinities can be obtained when cooling speed is controlled. Among three sprayed coatings considered with different crystallinities, the one with highest crystallinity exhibits best friction and wear behavior under dry sliding condition. Under lubricated sliding condition, however, the amorphous coating gives lower friction coefficient. The micron particles such as SiC,MoS2 and graphite in composite coatings can improve significantly the coating wear resistance and have a impact on coating friction behavior.
关键词:PEEK; thermal spray; serigraphy; coating; friction; wear;
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