Super low friction diamond like carbon films made at the Argonne National Laboratory. This presentation is based on a paper published by Dr. Ali Erdemir (J. Vac. Sci. Technol. A 18(4), Jul/Aug 2000 1987-1992). This presentation was made as a course requirement in the Department of Materials Science and Engineering, the University of Tennessee Space Institute at Tullahoma in Fall 2009.

1. Synthesis of diamond-like carbon films with super-low friction and wear properties A. Erdemir, O.L. Eryilmaz, and G. Fenske J. Vac. Sci. Technol. A 18(4), Jul/Aug 2000 1987-1992 MSE676 All Things Carbon | Fall 2009 Deepak Rajput Center for Laser Applications University of Tennessee Space Institute Tullahoma, Tennessee 37388-9700, USA Email: [email_address] | Web: http://drajput.com

8. Results Source gas: 25% CH 4 + 75% H 2 SEM micrograph TEM micrograph Structurally amorphous, free of volume defects, and well bonded to the substrate

9. Results Variation of coefficients of friction for different source gas compositions 0.015 0.003

10. Results Wear rate comparison of various DLC-coated M50 balls sliding against DLC-coated H13 disks in dry nitrogen.

11. Results Friction coefficient of DLC film produced on sapphire substrates in a 25% CH 4 + 75% H 2 plasma. 0.001 Substrate material influences frictional performance

14. Picture courtesy: http://thefutureofthings.com Image courtesy: www.diameterltd.co.uk/DLC.htm Dr. Ali Erdemir Argonne National Laboratory, IL