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Friday, May 1, 2020 | History

2 edition of Polytetrafluoroethylene transfer film studied with X-ray photoelectron spectroscopy found in the catalog.

Polytetrafluoroethylene transfer film studied with X-ray photoelectron spectroscopy

Donald R Wheeler

Polytetrafluoroethylene transfer film studied with X-ray photoelectron spectroscopy

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  • 24 Currently reading

Published by National Aeronautics and Space Administration, Scientific and Technical Information Branch, For sale by the National Technical Information Service] in Washington, D.C, [Springfield, Va .
Written in English

    Subjects:
  • Photoelectron spectroscopy,
  • Polymers

  • Edition Notes

    StatementDonald R. Wheeler
    SeriesNASA technical paper -- 1728
    ContributionsUnited States. National Aeronautics and Space Administration. Scientific and Technical Information Branch, Lewis Research Center
    The Physical Object
    Pagination8 p. :
    ID Numbers
    Open LibraryOL14932738M


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Polytetrafluoroethylene transfer film studied with X-ray photoelectron spectroscopy by Donald R Wheeler Download PDF EPUB FB2

Polytetrafluoroethylene transfer film studied with X-ray photoelectron spectroscopy (OCoLC) Online version: Wheeler, Donald R. Polytetrafluoroethylene transfer film studied with X-ray photoelectron spectroscopy (OCoLC) Material Type: Government publication, National government publication: Document Type: Book: All Authors.

A polytetrafluoroethylene (PTFE) sphere of radius mm was rubbed against nickel and S-Monel at speeds from to 94 mm s−1 and at loads from Cited by: Polytetrafluoroethylene transfer film studied with X-ray photoelectron spectroscopy (OCoLC) Microfiche version: Wheeler, Donald R.

Polytetrafluoroethylene transfer film studied with X-ray photoelectron spectroscopy (OCoLC) Material Type: Document, Government publication, National government publication, Internet resource. Improving the tribological performance of polytetrafluoroethylene (PTFE) resin is important for industrial use of PTFE.

An effective way to do this is to blend pure PTFE with another resin material to improve the quality of the transfer film, i.e., adhesion to a counter metallic surface. It is well-known that PTFE/polyetheretherketone (PEEK) polymer blends show significantly less Cited by: 7.

The polytetrafluoroethylene (PTFE) surfaces, modified by 1 kV Ar+ or O2+ ion beam irradiation, was investigated with in-situ X-ray photoelectron. Photoelectron spectrometers consist of a source of EM radiation, either an X-ray source or an ultraviolet source, an electron kinetic energy analyzer, and an electron counter, all housed in an ultra-high vacuum system.

A schematic illustration is given in Fig. The line width of the X-ray source should be as narrow as possible. Functionalization of Polytetrafluoroethylene (PTFE) powders of ~6 μm particle size is carried out using low-pressure GHz H2, NH3 microwave plasmas for various durations (, 10 h) to chemically modify their surface and alter their surface energy.

The X-ray Photoelectron Spectroscopy (XPS) analyses reveal that plasma treatment leads to significant defluorination Cited by: X-ray photoelectron spectroscopy is a highly surface sensitive technique which allows one to identify and quantify the chemical elements in the surface region of a solid [33].

It is interesting. Angle‐Resolved X‐Ray Photoelectron Spectroscopy Despite the general lack of information content in ARXPS measurement as stated by Cumpson, its application is widely accepted.

This trend is supported by the increasing demand for nondestructive surface studies and by a number of theoretical studies in this field since Cited by: 3. We investigated the tribological interaction between polytetrafluoroethylene (PTFE) and silicon oxide surfaces.

A simple rig was designed to bring about a friction between the surfaces via sliding a piece of PTFE on a thermally oxidized silicon wafer. X-ray photoelectron spectroscopic (XPS) analysis of the surface film showed the presence of the elements namely iron, phos phorus, nitrogen, carbon, oxygen and zinc.

Deconvolution spectra of these elements in the surface film inferred the presence of oxides/hydroxides of iron(III), Zn(OH) 2 and [Fe(III), Zn(II)-BPMG-citrate] heteropolynuclear. Energy-dispersive X-ray spectroscopy (EDX) shows the elemental composition of the Fe-doped WO 3 film as-grown and after annealing treatment.

Raman spectroscopy presented the main vibration mode of the Fe-doped WO 3 thin film. The optical energy bandgap of the films is decreasing as the substrate temperature increases.

Full article. Metal overlayers on organic functional groups of self-organized molecular assemblies. III. X-ray photoelectron spectroscopy of Cr/CN on mercaptododecanenitrile and of Cr/CH3 on octadecanethiol at low temperatures from to K.

Journal of Vacuum Science & Technology, A: Vacuum, Surfaces, and Films, 12, – The focus of the present article is on understanding the insight that X-ray photoelectron spectroscopy (XPS) measurements can provide when studying self-assembled monolayers.

Comparing density functional theory calculations to experimental data on deliberately chosen model systems, we show that both the chemical environment and electrostatic effects arising Cited by: @article{osti_, title = {Fabrication of super-hydrophobic surfaces on aluminum alloy substrates by RF-sputtered polytetrafluoroethylene coatings}, author = {Wang, Yang and Liu, Xiao Wei and Zhang, Hai Feng, E-mail: [email protected] and Zhou, Zhi Ping}, abstractNote = {In this work, we present a method of fabricating super-hydrophobic surface on aluminum alloy.

Determination of Lithium-Ion Distributions in Nanostructured Block Polymer Electrolyte Thin Films by X-ray Photoelectron Spectroscopy Depth ProfilingCited by: Understanding Chemical versus Electrostatic Shifts in X-ray Photoelectron Spectra of Organic Self-Assembled Monolayers.

X-ray spectroscopy techniques (X-ray photoelectron spectroscopy XPS) was used to investigate the chemical state of the synthesized catalysts. The results of Pd XPS spectra showed the metallic Pd and PdO phases for precalcined and calcined PdCoNi/G nanocomposite, respectively. length (EAL) for applications in Auger electron spectroscopy and X-ray photoelectron spectroscopy is defined for a measurement of an overlayer film thickness and the measurement of the depth of a thin marker layer by Auger electron spectroscopy and X-ray photoelectron spectroscopy.

Results can be found in the literature, e.g. Powell and 5/5(5). S/Zn codoped TiO2 nanomaterials were synthesized by a sol-gel method. X-ray diffraction, UV-vis diffuse reflectance spectroscopy, transmission electron microscopy, photoluminescence spectroscopy, and X-ray photoelectron spectroscopy were used Cited by: 9.

From the results of attenuated total reflection (ATR) Fourier transform infrared (FT-IR) spectroscopic analysis and X-ray photoelectron spectroscopy (XPS), it was found that the Ar/H 2 plasma was more effective for proceeding defluorination reactions and introducing oxygen moieties compared to Ar plasma under the experimental condition.

On the. PROCEEDINGS VOLUME International Conference on Thin Film Physics and Applications Structural investigations of the (Si1-x,Gex)O2 single-crystal thin films by x-ray photoelectron spectroscopy Author(s): Svetlana Sorokina; Juriy Dikov Amorphous microcellular polytetrafluoroethylene foam film Author(s): Chongzheng Tang.

Proc. SPIEALT'97 International Conference on Laser Surface Processing, pg 2 (26 May ); doi: /   X-ray photoelectron spectroscopy indicated that a thin layer of P3HT is spontaneously formed at the air/polymer blend layer interface during the spin-coating process.

It is suggested that the vacuum-evaporated gold could destroy the surface-segregated thin layer of P3HT[10,25], while the lamination process preserves the surface structure. Fortran program for X-ray photoelectron spectroscopy data reformatting / Phillip B.

Abel. Tools. Cite this Polytetrafluoroethylene transfer film studied with X-ray photoelectron spectroscopy.

Author Wheeler, Donald R. Published Handbook of x-ray photoelectron spectroscopy: a reference book of standard data for use in x-ray.

Electronic structure of lanthanum copper oxychalcogenides LaCuOCh (Ch=S, Se, Te) by X-ray photoelectron and absorption spectroscopy. Journal of Solid State Chemistry (7), / > Tribometer, Scratch test, Nanoindentation, Sputtering, Tribotest, Scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), Confocal microscopy, X-ray diffraction spectroscopy (XRD), Atomic force microscopy (AFM), Fourier transform spectroscopy (FTIR), Raman Spectroscopy, Goniometer, Thermal gravimetric analysis (TGA Title: Assistant Professor at National.

Chemical interaction and imaging of single Co3O4/graphene sheets studied by scanning transmission X-ray microscopy and X-ray absorption spectroscopy. Energy and Environmental Sciences 6(3), /c2eef. Quantitative x-ray photoelectron spectroscopy: Quadrupole effects, shake-up, Shirley background, and relative sensitivity factors from a database of true x-ray photoelectron spectra.

NASA Astrophysics Data System (ADS) Seah, M. P.; Gilmore, I. An analysis is provided of the x-ray photoelectron spectroscopy (XPS) intensities measured in the. X-Ray photoelectron Spectroscopy Applications. SciTech Connect. Engelhard, Mark H.; Droubay, Timothy C.; Du, Yingge.

With capability for obtaining. REVIEW ARTICLE: MODELLING AND ANALYSIS OF A GASOLINE ENGINE EXHAUST GAS SYSTEMS - Free ebook download as PDF File .pdf), Text File .txt) or read book online for free. The engine exhaust gas behaviour is strongly influencing the engine performance.

This paper presents the modelling and analysis of four stroke - gasoline engine exhaust gas systems. Also, the targeting of (LIMA) and X-ray photoelectron spectroscopy (XPS) specific elements can enable the quantity of a are used for failure diagnosis work associated with such particular additive (e.g., phosphate flame retardant or things as poor bonding to substrates and for surface titanium dioxide pigment) to be calculated.

characterisation 5/5(1). Surface and Interface Analysis An Electrochemists Toolbox Highly ordered pyrolytic graphite Highly oriented pyrolytic graphite High pressure X-ray photoelectron spectroscopy High resolution electron energy loss spectroscopy Height-regulated scanning Kelvin probe (also: HR-SKP) Inductively coupled plasma atomic emission spectrometry.

An overview is given of the current capabilities, advantages, and limitations of the six techniques in common use for compositional analyses of surfaces and thin films: Auger electron spectroscopy (AES), X-ray photoelectron spectroscopy (XPS), secondary ion mass spectrometry (SIMS), sputtered-neutral mass spectrometry (SNMS), ion-scattering.

The interaction between an X-ray photon and an inner-shell electron causes a complete transfer of the photon energy to the electron, which then has enough energy to leave the atom and escape from the surface (photoelectron).1 The binding energy Eb of the inner-shell electron can be calculated from the difference between the known X-ray photon.

X-ray diffraction of the samples (a) = HA, (b) HA- and (c) HA+ before contact with SBF. The technology based on RP is a processes employed for assemblage of materials in the powder, filament, liquid, or slide form, which in turn are stacked in successive thin layers until a three-dimensional structure is achieved.

Gold Book - Free ebook download as PDF File .pdf), Text File .txt) or read book online for free. edition of the IUPAC Compendium of Chemical Terminology, informally known as the Gold Book, which includes the oficial nomenclature for almost all terms related with chemistry. For % crystalline PTFE, densities of at 0 ºC and at 25 ºC were calculated from x-ray crystallographic data [a].

The density decrease of about 2% between these temperatures includes the decrease of approximately 1% due to the transition at 19 ºC, which results from a slight uncoiling of the helical conformation of molecules.