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.
参考文献
| [1] | Gadow R.;Scherer D. .Composite coatings with dry lubrication ability on light metal substrates[J].Surface & Coatings Technology,2002(0):471-477. |
| [2] | Liao H;Beche E;Coddet C.On the microstructure of thermally sprayed "PEEK" polymer[A].ASM International, Materials Park, OH,1998:25-301. |
| [3] | Zhang G;Liao H;Li H.On dry sliding friction and wear behaviour of PEEK and its composite coatings[J].Wear |
| [4] | Lu Z P;Friedrich K .On sliding friction and wear of PEEK and its composites[J].WEAR,1995,181 ～ 183:624-631. |
| [5] | Wang Q;Xue Q;Liu H et al.The effect of particle size of nanometer ZrO2 on the tribological behavior of PEEK[J].Wear,1996,198:216-219. |
| [6] | Hanchi J;Eiss N S et al.sliding friction and wear of short carbon-fiber-reinforced polyetheretherketone ( PEEK ) at elevated temperatures[J].WEAR,1997,203 ～ 204:380-386. |
| [7] | Floeck J.;Yuan Q.;Friedrich K. .On the friction and wear behaviour of PAN- and pitch-carbon fiber reinforced PEEK composites[J].Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear,1999(1):304-311. |
| [8] | Jianfeng Li;Hanlin Liao;Christian Coddet .Friction and wear behavior of flame-sprayed PEEK coatings[J].Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear,2002(9/10):824-831. |
| [9] | L.Simonin;H.Liao .Characterization of flame-sprayed PEEK coatings by FTIR-ATR, DSC and acoustic microscopy[J].Macromolecular materials and engineering,2000(0):153-162. |
| [10] | Liu J J.Material wear principle and wear resistance[M].北京:清华大学出版社,1993 |
| [11] | WangQH;XueQJ;Liu H W et al.An investigation of the friction and wear properties of nanometer Si3N4 filled PEEK[J].Wear,1996,196:82-86. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%