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Star‐Shaped Crystallographic Cracking of Localized Nanoporous Defects
Author(s) -
Renner Frank Uwe,
Ankah Genesis Ngwa,
Bashir Asif,
Ma Duancheng,
Biedermann P. Ulrich,
Shrestha Buddha Ratna,
Nellessen Monika,
Khorashadizadeh Anahita,
LosadaPérez Patricia,
Duarte Maria Jazmin,
Raabe Dierk,
Valtiner Markus
Publication year - 2015
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201405565
Subject(s) - materials science , nanoporous , cracking , shrinkage , monolayer , volume (thermodynamics) , surface (topology) , crystallography , composite material , nanotechnology , geometry , chemistry , physics , mathematics , quantum mechanics
On self‐assembled monolayer‐covered Cu–Au substrates, localized volume shrinkage at initial dealloying sites leads to cracks within the attacked regions. It is started from well‐controlled surface structures to gain fundamental insights in the driving mechanisms of localized corrosion and crack formation. Both the crack density and the crack morphology are critically dependent on surface orientation, crystallography, and inhibitor molecule species.