Accession Number:

AD0602782

Title:

EVALUATION OF THE MECHANISM OF CORROSION IN CAPILLARIES

Descriptive Note:

Final rept.

Corporate Author:

MARTIN CO DENVER CO

Report Date:

1964-06-22

Pagination or Media Count:

45.0

Abstract:

Mechanisms by which corrosion can occur in a capillary of 2014 aluminum are studied. Both experimental and theoretical techniques are employed in the program. The corrosive media are products of the reaction between 1 water and fuel a mixture of hydrazine and dimethyl hydrazine and 2 water and oxidizer nitrogen tetroxide. With each of these two reacting systems, one may form two displacement systems. In one case the capillary is initially filled with water which is later displaced by propellant. In the other case the capillary is initially filled with propellant which is later displaced by water. The word capillary refers to a crevice of small diameter open at one end to a propellant tank but closed at the other end. This is intended to include weld cracks, weld porosity, or huckbolt patches. Two configurations were considered in detail a uniform cylindrical hole and a large cavity connected to a propellant tank by a relatively narrow hole.

Subject Categories:

  • Properties of Metals and Alloys
  • Inorganic Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE