Accession Number : ADA307541
Title : Adhesion and Transfer of Polytetrafluoroethylene to Metals Studied by Auger Emission Spectroscopy.
Descriptive Note : Technical note,
Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION CLEVELAND OH LEWIS RESEARCH CEN TER
Personal Author(s) : Pepper, Stephen V. ; Buckley, Donald H.
PDF Url : ADA307541
Report Date : OCT 1972
Pagination or Media Count : 24
Abstract : The adhesion and transfer of polytetrafluoroethylene (PTFE) to metals in ultrahigh vacuum have been studied by using Auger emission spectroscopy. The transfer was effected both by compressive static contact and by sliding contact. The transfer observed after static contact was independent of the chemical constitution of the substrate. Electron-induced desorption of the fluorine in the transferred PTFE showed that the fluorine had no chemical interaction with the metal substrate. The coefficient of friction on metals was independent of the chemical constitution of the substrate. However, sliding PTFE on soft metals, such as aluminum, generated wear fragments that lodged in the PTFE and machined the substrate. p2
Descriptors : *METALS, *ADHESION, *TRANSFER, *AUGER ELECTRON SPECTROSCOPY, *TETRAFLUOROETHYLENE RESINS, INTERACTIONS, SUBSTRATES, ELECTRONS, ALUMINUM, FLUORINE, COEFFICIENTS, CHEMICAL REACTIONS, WEAR, EMISSION SPECTROSCOPY, STATICS, FRICTION, DESORPTION, FRAGMENTS, COMPRESSIVE PROPERTIES, ULTRAHIGH VACUUM, SLIDING CONTACTS.
Subject Categories : Polymer Chemistry
Adhesives, Seals and Binders
Laminates and Composite Materials
Distribution Statement : APPROVED FOR PUBLIC RELEASE