Title of article :
Influence of sodium chromate and dodecylamine
on enhanced dissolution behavior of Cu—Ni alloy
induced by AFM tip scratching
Author/Authors :
JUN-E QU، نويسنده , , XINGPENG GUO?، نويسنده , , ZHENYU CHEN، نويسنده ,
Issue Information :
دوهفته نامه با شماره پیاپی سال 2006
Abstract :
The influence of two inhibitors sodium chromate and dodecylamine on enhanced dissolution of
Cu–Ni alloy initiated by atomic force microscopy (AFM) tip scratching in 1.5 M NaCl and 0.01 M
HCl was investigated. The lateral force traces and force versus distance curves were measured
by AFM in distilled water without or with inhibitors to investigate the influence of inhibitors on
physical characters of sample surfaces. The results indicated that enhanced dissolution caused
by AFM tip scratching was inhibited by adding sodium chromate or dodecylamine into the
corrosive solutions, but their inhibition mechanisms are different. The inhibition effect of
sodium chromate is due to its oxidation ability to repair the destroyed protection film and the
increase of rigidity of metal surface resulted from the formation of oxide film containing Cr
elements. On the other hand, the inhibition effect of dodecylamine is due to the organic
adsorption film on metal surface to weaken the friction forces between the tip and the sample
and to elevate the ionization energy of metal. C 2006 Springer Science + Business Media, Inc.
Journal title :
Journal of Materials Science
Journal title :
Journal of Materials Science