Summary: This manuscript version differs slightly from the final published version, Nature 410, 450 (22 March 2001).
Evolution of Nanoporosity in Dealloying
Jonah Erlebacher*, Michael J. Aziz*, Alain Karma**, Nikolay Dimitrov***, Karl
*Division of Engineering and Applied Sciences, Harvard University, 9 Oxford St.,
Cambridge, MA 02138, USA
**Department of Physics and Center for Interdisciplinary Research on Complex Systems,
Northeastern University, 360 Huntington Avenue, Boston, MA 02115, USA
***Department of Mechanical and Aerospace Engineering and Center for Solid State
Sciences, Arizona State University, Tempe, AZ 85287-6106, USA
Present address: Department of Materials Science and Engineering, Johns Hopkins University, Baltimore,
MD 21218, USA.
Correspondence and requests for materials should be addressed to Jonah
Erlebacher (e-mail: Jonah.Erlebacher@jhu.edu.).
Dealloying is a common corrosion process during which an alloy is "parted" by
the selective dissolution of the electrochemically more active elements. This process
results in the formation of a nanoporous sponge composed almost entirely of the
more noble alloy constituents1
. Even though this morphology evolution problem has
attracted considerable attention, the physics responsible for porosity evolution have