TY  - THES
T1  - Electrocrystallization and characterization of nanostructured gold and gold alloys
A1  - Yevtushenko,Oleksandra
Y1  - 2007/07/25
N2  - The kinetics of electrocrystallization of nanostructured gold  is  investigated and the physical proper-ties of nanostructured materials such as thermal stability, surface roughness and hardness are improved. A new stable non-toxic electrolyte for  the electrodeposition of  gold and gold alloys is presented. Nanoscaling is achieved by pulse techniques. The possibility of controlling   the crystallite size  depending on physical and chemical process parameters such as pulse duration, current density, bath temperature, type and amount of additives is shown.  A new general equation for the current transient for three-dimensional nucleation and mixed ion transfer and diffusion controlled growth with previous adsorption process based on the existing theories is reported. The theoretical predictions of this equation  and its relevance for the analysis of current-time transients are discussed and compared with experimental observations. The characterizations are made by means of  in situ high-temperature X-ray diffraction, scanning electron microscopy,  atomic force microscopy and microindentation. 
KW  - Elektrokristallisation
KW  - Kinetik
KW  - Nanostruktur
KW  - Keimbildung
KW  - Gold
KW  - Goldlegierung
CY  - Saarbrücken
PB  - Universitäts- und Landesbibliothek
AD  - Postfach 151141, 66041 Saarbrücken
UR  - http://scidok.sulb.uni-saarland.de/volltexte/2007/1237
ER  -