The decomposition of a commercial perfluoropolyalkylether on alpha and gamma catalytic aluminas

Tribology Transactions

Volumn 39, Issue 1, 1996, Pages 148-156

  Morales, Wilfredo ^a  

^a NASA GLENN RESEARCH CENTER   (United States)

Author keywords

Aerospace tribology

Indexed keywords

AEROSPACE; USE;

LUBRICANTS; POLYETHERS; THERMAL DEGRADATION; THERMOANALYSIS; TRIBOLOGY; ALPHA PARTICLES; ALUMINA; CHEMICAL ATTACK; DATA REDUCTION; DECOMPOSITION; DIFFERENTIAL SCANNING CALORIMETRY; GAMMA RAYS; LIQUID CHROMATOGRAPHY; PH; THERMOGRAVIMETRIC ANALYSIS; X RAY PHOTOELECTRON SPECTROSCOPY;

FLUORINE CONTAINING POLYMERS; LUBRICANTS;

AEROSPACE TRIBOLOGY; COMMERCIAL PERFLUOROPOLYALKYLETHER LIQUID LUBRICANT; SMALL POROUS ALUMINA PELLETS; TRICHLOROTRIFLUORETHANE SOLVENT;

DEGRADATION; LUBRICANTS-SYNTHETIC; PERFLUOROPOLYETHERS;

EID: 0029656744     PISSN: 10402004     EISSN: 1547397X     Source Type: Journal    
DOI: 10.1080/10402009608983514     Document Type: Article

References (18)

1. Jones, W. R. Jr., Paciorek, K. J. L., Ito, T. I. and Kratzer, R. H., "Thermal Oxidative Degradation Reactions of Linear Perfluoroalkyl Ehters," I and EC Product Research and Development, 22, pp 166—170, (1983).
2. Welmick, L. S. and Jones, W. R. Jr., "Determination of the Thermal Stability of Perfluoroalkylethers by Tensimelry," NASA TM-106081, NASA, Washington, DC, (1992).
3. Smart, B. K. and Dixon, D. A., "Heterolylic C—F Bond Energies and Stabilities of Poly(Periluoroethers),” Jour. Fluor. Chem., 57, pp 251-258, (1992).
4. Pacansky, J., Waltman, R.J. and Wang, C., "Irradiation of Poly(Perfluoropropylene Oxide) by a 175 KV Electron Beam,” Jour. Fluor. Chem., 32, pp 283-297, (1986).
5. D’Anna, E., Leggieri, G., Luches, A. and Perrone, A., "Fragmentation Spectra and Appearance Potentials of Vacuum Pump Fluids Determined by Electron Impact Mass Spectrometry," Jour. Vac. Sei. Tech., A5, 6, (1987).
6. Pacansky, J. and Waltman, R.J., "Electron Beam Irradiation of Poly(Perfluoro ethers)," Jour. Phys. Chem., 95, pp 1512-1518, (1991).
7. Carre, D. J. and Markowitz, J. A., "The Reaction of PFPE Oils with FeF3, A1F3, and AICI3 at Elevated Temperatures," ASLE Trans., 28, pp 40-46, (1985).
8. Zehe, M.J. and Faut, O. D., "Acidic Attack of PFPE Lubricant Molecules by Metal Oxide Surfaces,” NASA TM-101962, NASA, Washington, DC, (1993).
9. Kasai, P. H., Tang, W. T. and Wheeler, P.O., "Degradation of PFPEs Catalyzed by Aluminum Oxide," Appl. Surf. Sci., 51, pp 201-211, (1991).
10. Conley, P. and Bohner, J., "Experience with Synthetic Fluorinated Fluid Lubricants,” in Proc. of 24th Aerospace Mechanisms Symp., NASA CP-3062, p 213, (1990).
11. Watson, N. D., Miller, J. B., Taylor, L. V., Lovell, J. B., Cox, J. W., Fedors, J. C., Kopia, L. P., Holloway, R. M. and Bradley, O. H., "Earth Radiation Budget Experiment (ERBE) Scanner Instrument Anomaly Investigation,” NASA TM-87636, NASA, Washington, DC, (1985).
12. Van Dyke Tiers, G., “The Chemistry of Perfluoro Ethers. I. Substitution of a-Fluorine by Chlorine: The a, a, a,-Trichloro Perfluoro Ethers,” Jour. Arner. Chem. Soc., 77, pp 4837-4840, (1955).
13. Basu, P., Ballinger, T. H. and Yates, J.T., "Fluoroalkyl Ether Chemistry on Alumina: A Transmission IR Study of the Adsorption and Thermal Decomposition of (CF2H)2O on Al2O3," Langinuir, 5, 2, p 198, (1989).
14. Flockhart, B. D., Leith, I. R. and Pink, R. C., "Electron Transfer at Alumina Surfaces," Trans. Faraday Soc., 65, p 542, (1969).
15. Flockhart, B. D., Liew, K. Y. and Pink, R. C., "Electron Transfer at Alumina Surfaces," Jour. Catai, 32, pp 20-24, (1974).
16. Morales, W., "Pcrfluoropolyalkylether Decomposition on Catalytic Aluminas,” NASA TM-106547, NASA, Washington, DC, (1994).
17. Herrera-Fierro, P. C., Jones, W. R. and Pepper, S. V., "Interfacial Chemistry of a Perfluoropolyether Lubricant Studied by XPS and TDS,” NASA TM-105840, NASA, Washington, DC, (1992).
18. Moulder, J. F., Stickler, W. F., Sobol, P. and Bomben, K. D., A Handbook of X-ray Photoelectron Spectroscopy, Chastain, J., ed., Perkin-Elmer Corp., Eden Prairie, MN, (1992).