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3 edition of Comparison of the tribological properties of fluorinated cokes and graphites found in the catalog.

Comparison of the tribological properties of fluorinated cokes and graphites

Robert L. Fusaro

Comparison of the tribological properties of fluorinated cokes and graphites

by Robert L. Fusaro

  • 92 Want to read
  • 30 Currently reading

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

    Subjects:
  • Graphite fluorides.,
  • Tribology.

  • Edition Notes

    StatementRobert L. Fusaro.
    SeriesNASA technical memorandum -- 100170.
    ContributionsUnited States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL15289729M

    CiteScore: ℹ CiteScore: CiteScore measures the average citations received per peer-reviewed document published in this title. CiteScore values are based on citation counts in a range of four years (e.g. ) to peer-reviewed documents (articles, reviews, conference papers, data papers and book chapters) published in the same four calendar years, divided by the number of. Graphene films grown on Cu foils have been fluorinated with xenon difluoride (XeF2) gas on one or both sides. When exposed on one side the F coverage saturates at 25% (C4F), which is optically transparent, over 6 orders of magnitude more resistive than graphene, and readily patterned. Density functional calculations for varying coverages indicate that a C4F configuration is lowest in energy.

    tribological properties and utilised as solid lubricant for a long time. Diamond is known as the hardest material in nature, while diamond like carbon (DLC) coatings, considered as amorphous or nanocrystalline diamond, are widely studied for their excellent tribological properties. The discovery of fullerene and carbon nanotubes (CNT).   Tribological Properties of Polyester Composites: Effect of Vegetable Oils and Polymer Fibers corn or sunflower oils in polyester composites decreased wear drastically to very little values in compare with polyester specimens free of oils, Suggest a book topic Books open for submissions. chapter statistics.

    Tribological Properties of Room Temperature Fluorinated Graphite Heat-Treated Under Fluorine Atmosphere. Tribology Letters , 37 (1), DOI: /s This book gives a comprehensive description of thin surface coatings, their behaviour and potential uses in tribological applications. The deposition techniques, tribological mechanisms, properties of coatings, characterization, evaluation and selection methodology in addition to application examples.


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Comparison of the tribological properties of fluorinated cokes and graphites by Robert L. Fusaro Download PDF EPUB FB2

Get this from a library. Comparison of the tribological properties of fluorinated cokes and graphites. [Robert L Fusaro; United States. National Aeronautics and Space Administration.]. Coke was found to have very little lubricating ability, but fluorinated coke did possess good lubricating properties.

However, the fluorinated graphite and fluorinated graphitic carbon (which gave equivalent results) gave superior results to those obtained with the fluorinated cokes.

No tribological benefit was found for using small versus a Author: Robert L. Fusaro. Comparison of the Tribological Properties of Fluorinated Cokes and Graphites.

tribological properties. For comparison, graphite and coke powders which were not fluorinated were also.

The tribological properties of the PI and PI/FG nanocomposite coatings under drying sliding condition are tested and the results are displayed in Fig. y, the worn surfaces of the PI and PI/FG nanocomposite coatings exhibit severe plastic deformation with some microcracks, as shown in Fig.

3(a)–(c). Specifically, larger and denser microcracks (marked with red cycle) are created on the Cited by: Comparison of the Tribological Properties of Fluorinated Cokes and Graphites.

Tribology Transactions32 (2), DOI: /Cited by: Comparison of the Tribological Properties of Fluorinated Cokes and Graphites. Tribology Transactions32 (2), DOI: /   Macroscale tribological properties of fluorinated graphene.

The purpose of this study is therefore to clarify the tribological properties under macroscale load of monolayer and multilayer graphene whose surfaces were modified by fluorine plasma treatment. the intensity of the 2D peak decreases in comparison to that of the G peak by the.

Comparison of the Tribological Properties of Fluorinated Cokes and Graphites,” Continuum Theory, Particle Simulations, Comparison With Experiment,” Superior Tribological Properties of Powder Materials With Solid Lubricant Nanoparticles,” Wear. Solid Lubricants: Overview and Recent Developments - Volume 16 Issue 5 - Paul Sutor.

Comparison of the Tribological Properties of Fluorinated Cokes and Graphites. Robert L. Fusaro. Pages: Published online: 25 Mar Abstract | References | PDF ( KB). The present work is concerned with the study of the tribological properties of various fluorinated carbon phases obtained at room temperature and then post-treated under fluorine atmosphere at different temperatures.

The tribological tests evidence good intrinsic properties for all the compounds (friction coefficient in the range –). Comparison of the Tribological Properties of Fluorinated Cokes and Graphites.

fluorinating to evaluate the effect of a finer particle size on the tribological properties. For comparison. Thin Solid Films, 53 () Elsevier Sequoia S.A., Lausanne-Printed in the Netherlands TRIBOLOGICAL PROPERTIES OF SURFACES" DONALD Y Lett-is Research Center, National Aeronautics and Space Administration, Cleveland, Ohio 44/35 (U.S.A.) (Received April 3, ; accepted Ap ) The real area of contact between two solid surfaces.

Finally, the dried mixture of FG and UHMWPE was treated by hot pressing ( °C, 10 MPa) to form a cylindrical specimen. To study the mechanical properties, tribological properties and biocompatibility of FG/UHMWPE composites with the FG content of 0,and 1 wt.% were prepared, respectively. Characterizations.

Tribology of fluorinated diamond‐like carbon coatings: first principles calculations and sliding experiments. Sen. Corresponding Author.

Sliding contact experiments and first principles calculations were conducted to study tribological properties of aluminium and fluorinated diamond‐like carbon (F‐DLC) surfaces. This chapter focuses on the tribological behavior and properties of metallic and ceramic coatings, as the others are covered in elsewhere in this book.

Another constraint applied is to focus on thin tribological coatings, that is, those that are sufficiently. Fluorinated graphites (CF) were obtained by reaction at room temperature of fluorine gas with graphite in the presence of boron trifluoride and hydrogen fluoride as catalysts.

Tribology is the science and engineering of interacting surfaces in relative includes the study and application of the principles of friction, lubrication, and ogy is highly interdisciplinary. It draws on many academic fields, including physics, chemistry, materials science, mathematics, biology, and who work in the field of tribology are referred to as.

The tribological properties of polyimide (PI) and PI/fluorinated graphene (FG) nanocomposites, as a new class of graphene reinforced polymer, are investigated using a ball-on-disk configuration. This work is concerned with the study of the tribologic properties of room temperature fluorinated graphite heat-treated under fluorine atmosphere.

The fluorinated compounds all present good intrinsic friction properties (friction coefficient in the range –). The tribologic performances are optimized if the materials present remaining graphitic domains (influenced by the presence of. Tribological Behaviors of Fluorinated Polyimides 0 20 40 60 80 90 Tensile strength(MPa) Fluorinated group molar ratios(mol%) oC h h h 0h Figure 6.

Tensile strengths of PI films with various fluorinated monomer ratios under different time of thermaltreatment at C. Friction and Wear Properties.The present work is concerned with the study of the tribological properties of various fluorinated carbon phases obtained at room temperature and then post-treated under fluorine atmosphere at.– The purpose of this paper is to investigate the role of solid lubricants (graphite, coke, ZnS) on brake performance., – In this study, the tribological and surface characteristic of non‐asbestos organic type brake friction materials containing three different solid lubricants (graphite, coke, and ZnS) in different proportions were examined and evaluated experimentally.