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significant amount of time is usually spent on testing methods and parameter optimization to better characterize and differentiate the performance of polymer coating samples. After tribological testing, polymeric coating materials are examined using various material property characterization tools such as indentation, scratch, SEM and profilometer, to determine their mechanical, structural and morphological surface properties. During this step of property characterization, significant amount of effort was placed on data analysis and interpretation to extract the exact and pure (actual) properties of the polymer coating layers decoupled from substrate effects. Once the tribological performance and material properties of the polymer coatings are measured, both results are correlated to better understand the tribological behavior and mechanism of polymer coatings on the contact interface. Chapter 2 reviews the fundamentals of polymer and polymer coating tribology based on the open literatures, which gives an insight on the tribological study of polymeric coatings for actual industrial applications in this work. In Chapter 3, seven different polymeric coatings were tribologically tested under conditions simulating both rolling-piston and swash-plate type compressors in CO2 refrigerant environment. Friction and wear behavior of different polymeric coatings were directly compared to select the best potential coatings for compressor applications. In Chapter 4, micro- mechanical and structural properties of these polymeric coatings were characterized using the indentation technique. Especially, two representative PTFE- (PTFE/Pyrrolidone-2) and PEEK-based coatings (PEEK/PTFE) were directly compared to find out the key factors determining the tribological performance differences between these two coatings. In Chapter 5, the tribological behavior of polymeric coatings under elevated temperature 9PDF Image | TRIBOLOGY OF POLYMERIC COATINGS FOR AGGRESSIVE BEARING APPLICATIONS
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