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Grain Boundary Parting Limit during Dealloying
Author(s) -
Noh Kyong Wook,
Tai Kaiping,
Mao Shimin,
Dillon Shen J.
Publication year - 2015
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201400179
Subject(s) - nanocrystalline material , grain boundary , materials science , metallurgy , grain boundary strengthening , grain size , microstructure , corrosion , grain boundary diffusion coefficient , in situ , nanotechnology , chemistry , organic chemistry
The role of chemistry in affecting dealloying along and across grain boundaries is investigated in nanocrystalline Ag–Au and Cu–Au. The microstructural evolution, through a combination of in situ and ex situ electron microscopy, is correlated with measurements of grain boundary chemistry via a statistical analysis. A critical concentration of segregated Au, 40%, inhibits grain boundary corrosion and strongly influences the microstructural evolution.