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High voltage research (breakdown strengths of gaseous and liquid insulators). Third quarterly report for period ending December 31, 1976. [C₆F₁₀, C₆F₁₂, C₄F₆, C₃F₈ with N₂, SF₆, c-C₄F₈, iso-C₄F₈] [electronic resource]

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Bibliographic Details
Online Access:	Online Access
Corporate Author:	Oak Ridge National Laboratory (Researcher)
Format:	Government Document Electronic eBook
Language:	English
Published:	Washington, D.C. : Oak Ridge, Tenn. : United States. Energy Research and Development Administration. ; distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 1977.
Subjects:	Electron Attachment. Gases. Electrical Properties. Organic Compounds. Sulfur Fluorides. Fluorinated Alicyclic Hydrocarbons. Halogenated Aliphatic Hydrocarbons. Dielectric Properties. Organic Fluorine Compounds. Organic Halogen Compounds. Fluorine Compounds. Sulfur Compounds. Physical Properties. Halogenated Alicyclic Hydrocarbons. Dielectric Materials. Carbon Compounds. Fluids. Fluorinated Aliphatic Hydrocarbons. Carbon Fluorides. Halogen Compounds. Halides. Fluorides. Breakdown. Materials Science.

Description
Abstract:	The systematic basic and applied work to improve gaseous dielectrics continued. The breakdown strengths of C₆F₁₀ (perfluorocyclohexene) and C₆F₁₂ (mixture of 1,2- and 1,3-perfluorodimethylcyclobutane) have been found to be, respectively, 2.3 to 2.4 and 1.9 to 2.2 times higher than SF₆ under identical experimental conditions. The breakdown strengths of mixtures of C₄F₆, SF₆, c-C₄F₈, iso-C₄F₈, and C₃F₈ with N₂ have been studied systematically in various combinations in an effort to understand the role of the basic properties and effectiveness of each component of a multicomponent gas on the breakdown strength. A number of such mixtures (e.g., 20 percent C₄F₆, 20 percent SF₆, and 60 percent N₂) are better and cheaper than SF₆. Basic electron attachment data have been obtained for C₃F₈, and the overall effectiveness of inelastic processes has been assessed for a number of gases based on their electron transport coefficients. Work on our new high-pressure, high-voltage and variable temperature (-40 to +120°C) chamber for uniform-field breakdown tests proceeded well. Design of apparatus for breakdown testing with nonuniform fields and/or rough surfaces has begun; concentric-cylinder field electrodes of varied surface roughness are under fabrication. Plans are underway for an International Symposium on Gaseous Dielectrics to be sponsored by ORNL-ERDA-EPRI.
Item Description:	Published through SciTech Connect. 02/01/1977. "ornl/tm-5806" James, D. R.; Pace, M. O.; Christophorou, L. G.; Pai, R. Y.; Mathis, R. A.; Bouldin, D. W.; Tittle, D. E.
Physical Description:	Pages: 31 : digital, PDF file.