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Article

Formation of Tribofilm in the Friction of Fluorinated Diamond-Like Carbon (FDLC) Film against Ti6Al4V in Bovine Serum Albumin (BSA) Solution

1
Chongqing Key Laboratory of Materials Surface & Interface Science, Chongqing University of Arts and Sciences, Chongqing 402160, China
2
Centre of Excellence for Advanced Materials, Dongguan 523808, China
3
Jeffrey Sachs Center on Sustainable Development, Sunway University, Bandar Sunway 47500, Malaysia
*
Author to whom correspondence should be addressed.
Coatings 2020, 10(9), 903; https://doi.org/10.3390/coatings10090903
Received: 24 August 2020 / Revised: 17 September 2020 / Accepted: 18 September 2020 / Published: 20 September 2020
(This article belongs to the Special Issue Science and Technology of Flexible Films and Devices)
A route to reducing the wear of the metal counterpart in the friction of meatal against diamond-like carbon (DLC) is to form a lubricating tribofilm on the metal counterface. However, in liquid lubricating conditions, the formation of tribofilm can be influenced by both the lubricating medium and the counterpart material. Here we report the effect of lubricating biomolecule and doping fluorine element on the formation of tribofilm in fluorinated DLC (FDLC)-Ti6Al4V friction system. A group of ball-on-disc frictional experiments with different sliding speeds and normal loads were performed in phosphate buffer solution (PBS) and bovine serum albumin (BSA) solution. The results showed the formation of tribofilm was inhibited by the absorption of biomolecules on the frictional surface, thus improving the friction coefficient and wear of Ti6Al4V counterpart. Doping fluorine into DLC film also can restrain the formation of tribofilm on Ti6Al4V counterface. As a result, tribofilm is difficult to form when Ti6Al4V counterface slides against FDLC in BSA solution. Fluorinated DLC film should be considered carefully for the anti-wear use in body fluid containing biomolecules because it might cause severe wear of the counterpart material. View Full-Text
Keywords: tribofilm; fluorinated diamond-like carbon; body fluid; friction; wear tribofilm; fluorinated diamond-like carbon; body fluid; friction; wear
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MDPI and ACS Style

Zhang, T.; Xu, Z.; Su, Y.; Wang, J.; Li, L.; Chong, K.B.; Hou, X.; Paddea, S. Formation of Tribofilm in the Friction of Fluorinated Diamond-Like Carbon (FDLC) Film against Ti6Al4V in Bovine Serum Albumin (BSA) Solution. Coatings 2020, 10, 903. https://doi.org/10.3390/coatings10090903

AMA Style

Zhang T, Xu Z, Su Y, Wang J, Li L, Chong KB, Hou X, Paddea S. Formation of Tribofilm in the Friction of Fluorinated Diamond-Like Carbon (FDLC) Film against Ti6Al4V in Bovine Serum Albumin (BSA) Solution. Coatings. 2020; 10(9):903. https://doi.org/10.3390/coatings10090903

Chicago/Turabian Style

Zhang, Tengfei, Zhaoying Xu, Yongyao Su, Jinbiao Wang, Lu Li, Kok Boon Chong, Xiaodong Hou, and Sanjooram Paddea. 2020. "Formation of Tribofilm in the Friction of Fluorinated Diamond-Like Carbon (FDLC) Film against Ti6Al4V in Bovine Serum Albumin (BSA) Solution" Coatings 10, no. 9: 903. https://doi.org/10.3390/coatings10090903

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