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Publication Title | TRIBOLOGY OF POLYMERIC COATINGS FOR AGGRESSIVE BEARING APPLICATIONS

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Search Completed | Title | TRIBOLOGY OF POLYMERIC COATINGS FOR AGGRESSIVE BEARING APPLICATIONS
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Page Number: 159
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Text | TRIBOLOGY OF POLYMERIC COATINGS FOR AGGRESSIVE BEARING APPLICATIONS | 159



A.3 Conclusion
5% ATSP/PTFE material coated on the cast iron substrate was preliminarily tested under aggressive compressor-specific conditions and the following conclusions could be drawn,
(a) 5% ATSP/PTFE coating showed relatively low friction coefficient of 0.077 under
room temperature and 445 N normal load conditions, which was similar to the COF of PEEK/PTFE, but much more stable behavior than PEEK/PTFE coating. Also, 5% ATSP/PTFE coating showed almost zero wear without any wear debris observed on the coating surface even after 60 min duration testing.
(b) Higher normal load tests (15 min duration) with 668 N (150 lb) and 890 N (200 lb) exhibited the exceptional scuffing resistance of 5% ATSP/PTFE coating with low and stable friction coefficient (0.052 for 668 N and 0.048 for 890 N) and negligible amount of wear.
(c) Low (3 °C) and high (80 °C) temperature testing performed on 5% ATSP/PTFE coating showed very similar frictional behavior to its room temperature result, but some clear wear marks under high temperature testing was observed compared to almost zero wear under room temperature condition.
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