Flow Decay

Abstract

An investigation of N2O4 adducts of Fe(NO3)3 was carried out, since the compound Fe(NO3)3N2O4 was claimed to be responsible for flow decay of liquid propellant N2O4 in steel systems. Equilibrium vapor pressures of the system Fe(NO3)3:nN2O4 were measured at 10C for values of n between 6.0 and 1.0. The compound Fe(NO3)3:1.5N2O4 is now recognized as the solid phase in equilibrium with liquid N2O4. The presence of HNO3 in N2O4 influences the physical and chemical nature of the flow-decay deposit. The behaviour of Fe(NO3)3:nN2O4 (n= 1.0 to 1.5) in 100% HNO3 and in HNO3/N2O4 and H2O/N2O4 mixtures was therefore studied. The influence of temperature differential on the rate of flow decay was also investigated. The corrosion of steels by pure liquid N2O4 or by samples containing small known amounts of NOCl, HNO3, or NO was studied by scanning electron microscopy.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1972
Accession Number
AD0755378

Entities

People

  • C. C. Addison

Organizations

  • University of Nottingham

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Ground and Sea Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Chemical Synthesis
  • Chemistry
  • Crystal Structure
  • Electron Microscopes
  • Electron Microscopy
  • Films
  • Fluoropolymers
  • Materials
  • Materials Science
  • Measurement
  • Microscopy
  • Nitrogen Oxides
  • Organic Chemistry
  • Scanning Electron Microscopy
  • Spectra
  • Spectroscopy

Readers

  • Materials Science and Engineering.
  • Organic Chemistry

Technology Areas

  • Microelectronics