Morphological evidence for a pitting mechanism in dilute aluminum alloys
By: by J. Perkins, J.R. Cummings and K.J. Graham
Contributors: Cummings, J. R.; Graham, Kenneth J. (Kenneth Judson); Naval Postgraduate School (U.S.)
Publisher: Naval Postgraduate School
Published: 1978
Place of publication: Monterey, Calif
Language: eng
Number of pages: 18
Subjects: Aluminum alloys; Corrosion
Description: In the course of an investigation of the seawater corrosion behavior of several dilute aluminum alloys, direct microscopic evidence of pitting phenomena was obtained. Observations, obtained by scanning electron microscopy after galvanic corrosion exposures, illustrate a pitting mechanism involving the extrusion of columns of corrosion product from pits by the action of hydrogen gas generated inside the pits. The macroscopic dissolution patterns of the various alloys and their respective microscopi dissolution morphologies are also described. The observations support the classical model for pitting of aluminum originally presented by Edeleanu and Evans. (Author)
Notes: Title from cover.

"Technical report no. 9 to the office of Naval Research Contract no. N0014-78-WR-80105, NR-036-120"--Cover.

"June 1978"--Cover.

"NPS-69PS-78-005"--Cover.

Includes bibliographical references (p. 7)

"Approved for public release; distribution unlimited"--Cover.

Technical report; 1978.