Observations on Permeation of Polytetrafluoroethylene by Compounds of Rhenium, Molybdenum, and Tungsten.

Abstract

Observations of diffusion of rhenium molybdenum, and tungsten hexafluorides into PFTE and hydrolysis of the resultant material are reported. Exposure of PTFE and hydrolysis of the resultant material are reported. Exposure to rhenium or molybdenum hexafluoride, followed by hydrolysis, results in impregnation of the plastic with a metal compound. Tungsten hexafluoride was observed to grow a fibrous product (composition unresolved) on the surface of the plastic during ambient air hydrolysis. Rhenuim hexafluoride hydrolysis yielded a mixture of rhenium oxides. The PTFE was investigated for electrical conduction and was found to be substantially more conductive than the pure plastic. The hydrolysis product of molybdenum hexafluoride impregnation was postulated to be a mixture of molybdenum oxides.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1968
Accession Number
ADA309444

Entities

People

  • Harold Leibecki

Organizations

  • Glenn Research Center

Tags

DTIC Thesaurus Topics

  • Aeronautics
  • Capacitance
  • Conductivity
  • Diffraction
  • Direct Current
  • Electrical Resistance
  • Fluoropolymers
  • Frequency
  • Materials
  • Measurement
  • Molybdenum Compounds
  • Observation
  • Reservoirs
  • Resistance
  • Vapor Deposition
  • X Rays
  • X-Ray Diffraction

Fields of Study

  • Materials science

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