Recommendations for h-BN loading and service temperature to achieve low friction coefficient and wear rate for thermal-sprayed PEEK coatings
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Publication Details
Author list: Tharajak J., Palathai T., Sombatsompop N.
Publisher: Elsevier
Publication year: 2017
Journal: Surface and Coatings Technology (0257-8972)
Volume number: 321
Start page: 477
End page: 483
Number of pages: 7
ISSN: 0257-8972
eISSN: 1879-3347
Languages: English-Great Britain (EN-GB)
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Abstract
This work investigated the friction and wear characteristics of poly(ether-ether-ketone) (PEEK) with and without addition of hexagonal boron nitride (h-BN), which was prepared by coating PEEK on carbon steel substrate via flame spray coating technique. The coatings were then tested at different temperatures (30, 100, 200 and 300 ฐC) by ball-on-disc sliding wear test; 100 and 200 ฐC were found to be suitable service temperatures to obtain low friction and wear rate for PEEK coatings. No chemical or structural changes of PEEK were observed at the temperature range used in this work. The results indicated that h-BN could be used as a wear and friction reducer for PEEK coatings under optimum loading and service temperature. The loading of h-BN at 2 wt% was sufficient for improving the wear resistance, with reduced friction coefficients. The testing temperature exhibited a more pronounced effect on the friction and wear characteristics of PEEK coatings as compared to the effect of h-BN addition. ฉ 2017 Elsevier B.V.
Keywords
Poly(ether-ether-ketone)