Reference

Investigation of the depth of preferential surface ordering in liquids: a photoelectron spectroscopic investigation of liquid mixtures

Investigation of the depth of preferential surface ordering in liquids: a photoelectron spectroscopic investigation of liquid mixtures. Bindu, V.; Pradeep, T. (Dep. Chem.Chemicals with cas numbers 60164-51-4 and 2455-71-2 also play role. Regional Sophisticated Instrumentation Cent., Indian Inst. Technol., Madras 600036, India). Journal of Chemical Physics, 106(3), 1231-1233 (English) 1997 American Institute of Physics. CODEN: JCPSA6. ISSN: 0021-9606. DOCUMENT TYPE: Journal CA Section: 36 (Physical Properties of Synthetic High Polymers) Angle-resolved x-ray photoelectron spectroscopic studies of a series of liq. mixts. of a perfluoro-polyether (Krytox 16350) and a polyphenylether (Santovac-5) show that the former spreads on the latter and the film thickness could even be smaller than the photoelectron mean free path. The mol. ordering in Krytox remain as that of the free liq. which is manifested in the enhancement of the relative intensity of specific features in the photoelectron spectrum as the electron take-off angle is decreased. The preferential ordering is limited to the very top and an upper limit of this thickness is estd. to be about 8 ?. This observation is in accordance with mol. dynamics simulations of long chain hydrocarbon liqs. .

Perfluoropolyalkylether oil degradation: inference of iron(III) fluoride formation on steel surfaces under boundary conditions

Perfluoropolyalkylether oil degradation: inference of iron(III) fluoride formation on steel surfaces under boundary conditions. Carre, D. J. (Chem. Phys. Lab., Aerosp.Chemicals with cas numbers 60164-51-4 and 11113-65-8 also play role. Corp., El Segundo, CA, USA). Report, TR-0084A(5945-03)-3, SD-TR-85-37; Order No. AD-A159261/7/GAR, 24 pp. Avail. NTIS From: Gov. Rep. Announce. Index (U. S.) 1986, 86(1), Abstr. No. 600,990 (English) 1985. DOCUMENT TYPE: Report CA Section: 51 (Fossil Fuels, Derivatives, and Related Products) The formation of FeF3 through the interaction of Kaytox 143AB (perfluoropolyalkyl ether) [55600-49-2] (PFPE) oil with steel surfaces was investigated under boundary lubrication conditions. Ball-bearing rolling action was simulated by a specially designed wear-test app. that incorporated noncoaxial wear members to give a skid/roll ratio of approx. 0.. The contact stress (~120,000 psi), and the speed was 1750 rpm. The low-O environment of spacecraft earth orbit, the formation of FeF3 and subsequent FeF3-catalyzed degrdn. of PFPE constitutes an important PFPE degrdn. pathway under boundary lubrication conditions. .