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Surface Contamination and Corrosion in Pyrotechnic Actuators

  • R. G. Jungst
  • R. K. Quinn
  • T. M. Massis
  • R. N. Roberts
  • R. E. Whan

Abstract

Accelerated aging studies of pyrotechnic actuators containing a mixture of titanium metal and potassium Perchlorate powders have revealed that extensive corrosion of the metal pins and bridgewires used to ignite the device occurs in relatively short times. Analyses suggest that the corrosive process is associated with chlorine and organic contaminants. These can trigger corrosion by attacking the passivating oxide layer on the surface of metal alloys, thereby promoting reaction between the pyrotechnic and the metal. The contaminants may also react directly with the pyrotechnic to cause decomposition to corrosive species. Residual moisture in the pyrotechnic powder tends to enhance corrosion rates when contaminants are present. Tests run on several metal alloys have verified the corrosive action of certain organic solvent mixtures. Specifically, Tophet A®, Tophet C®, and Alloy 52 were corroded when exposed to combinations of alcohols and chlorinated organic liquids.

Keywords

Auger Electron Spectroscopy Free Chloride Scanning Electron Microscope Photomicrograph Corrode Area Passivating Oxide Layer 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    H. L. Schlichting and E. D. Weil, Belg. Pat. 622 421, Dec, 28, 1962, (Chem. Abstracts, 59, 11255f (1963).Google Scholar
  2. 2.
    A. Y. Ku and D. H. Freeman, Anal. Chem., 49, 1637 (1977).CrossRefGoogle Scholar
  3. 3.
    K. L. Shanahan, “The Effect of Fe3+, Cr3+, Ni2+ , and Mn2+ on the Decomposition of Hydrogen Peroxide Solutions”, Sandia Laboratories Report, SAND78–1778, March 1979. (Available DOE/TIC, Sandia Laboratories, Box 5800, Albuquerque, NM 87185, attn: R. P. Campbell).Google Scholar
  4. 4.
    N. R. Armstrong and R. K. Quinn, Surface Sci., 67, 451 (1977).CrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1979

Authors and Affiliations

  • R. G. Jungst
    • 1
  • R. K. Quinn
    • 1
  • T. M. Massis
    • 1
  • R. N. Roberts
    • 1
  • R. E. Whan
    • 1
  1. 1.Sandia LaboratoriesAlbuquerqueUSA

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