PDF Publication Title:
Text from PDF Page: 105
property of each surface is the percent elastic recovery (%). It is calculated as the ratio of the “elastic deformation (difference between total and plastic deformation)” to the “total deformation,” and plotted with varying normal loads as seen in Figure 5.11(d). PEEK/PTFE coating showed the lowest recovery with less than 20 %, while PTFE/Pyrrolidone-2 exhibited about three times higher recovery than PEEK/PTFE coating for all three normal load conditions. This finding proves our previous discussion and expectation that polymer surfaces with higher elastic recovery would have better frictional behavior due to their lower real contact area, and thus lower adhesion (Hanchi and Eiss, 1997). Interestingly, both ATSP-based coatings exhibited significantly higher recovery rates around 90% (the 5% ATSP/MoS2 coating showed slightly higher recovery than the 1% ATSP/PTFE coating). Even though, unfortunately, these two ATSP-based coatings were not tribologically tested using HPT, their frictional behavior could be directly compared with other PTFE- and PEEK-based coatings as shown in Figure 5.12. This plot was constructed based on the in-situ COF recording during the scratch measurements which was already described in Figures 5.9(e), 5.9(f), 5.10(e), and 5.10(f). In agreement with the recovery property of each coating as discussed above, the COF of 5% ATSP/MoS2 coating which had the highest recovery exhibited the lowest COF values for all increasing normal load conditions. Then, PTFE/Pyrrolidone-2 and 1% ATSP/PTFE coatings showed similar COF with increasing normal loads. As already observed from HPT testing, PEEK/PTFE coating showed the highest COF values in this comparison as well due to its significantly plastic surface property. Therefore, from the scratch testing of different polymeric coating surfaces, it could be observed once again 99PDF Image | TRIBOLOGY OF POLYMERIC COATINGS FOR AGGRESSIVE BEARING APPLICATIONS
PDF Search Title:
TRIBOLOGY OF POLYMERIC COATINGS FOR AGGRESSIVE BEARING APPLICATIONSOriginal File Name Searched:
thesis-tribology.pdfDIY PDF Search: Google It | Yahoo | Bing
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
IT XR Project Redstone NFT Available for Sale: NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Be part of the future with this NFT. Can be bought and sold but only one design NFT exists. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Turbine IT XR Project Redstone Design: NFT for sale... NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Includes all rights to this turbine design, including license for Fluid Handling Block I and II for the turbine assembly and housing. The NFT includes the blueprints (cad/cam), revenue streams, and all future development of the IT XR Project Redstone... More Info
Infinity Turbine ROT Radial Outflow Turbine 24 Design and Worldwide Rights: NFT for sale... NFT for the ROT 24 energy turbine. Be part of the future with this NFT. This design can be bought and sold but only one design NFT exists. You may manufacture the unit, or get the revenues from its sale from Infinity Turbine. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Supercritical CO2 10 Liter Extractor Design and Worldwide Rights: The Infinity Supercritical 10L CO2 extractor is for botanical oil extraction, which is rich in terpenes and can produce shelf ready full spectrum oil. With over 5 years of development, this industry leader mature extractor machine has been sold since 2015 and is part of many profitable businesses. The process can also be used for electrowinning, e-waste recycling, and lithium battery recycling, gold mining electronic wastes, precious metals. CO2 can also be used in a reverse fuel cell with nafion to make a gas-to-liquids fuel, such as methanol, ethanol and butanol or ethylene. Supercritical CO2 has also been used for treating nafion to make it more effective catalyst. This NFT is for the purchase of worldwide rights which includes the design. More Info
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
Infinity Turbine Products: Special for this month, any plans are $10,000 for complete Cad/Cam blueprints. License is for one build. Try before you buy a production license. May pay by Bitcoin or other Crypto. Products Page... More Info
CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com (Standard Web Page)