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Advanced metallographic techniques for aluminum and its alloys
 Rychlý, David ; Gejdoš, Pavel (oponent) ; Mikmeková, Šárka (vedoucí práce)
Main goal of this thesis is to optimize the metallographic preparation process of aluminium for specific needs of a scanning electron microscopy (SEM). The SEM is highly sensitive to surface quality and conventional sample preparation methods used for an optical microscopy (OM) become insufficient. The thesis focuses on optimizing and finding novel metallographic methods fulfilling high requirements of the SEM imaging. It requires perfect quality surface without any damage, such as preparation artifacts and scratches. A pure aluminium has been selected as an experimental material. Conventional and advanced metallographic techniques were tested and the most promising techniques were optimized. Several surface finish techniques were examined in order to obtain a perfect quality surface, such as colloidal sillica polishing and electropolishing. The surface quality was examined by the OM, the low voltage SEM, and a confocal microscopy. Finally, the metallographic technique providing the aluminium surface with minimum defects is established.
Úplný záznam
Advanced metallographic techniques for aluminum and its alloys
 Rychlý, David ; Gejdoš, Pavel (oponent) ; Mikmeková, Šárka (vedoucí práce)
Main goal of this thesis is to optimize the metallographic preparation process of aluminium for specific needs of a scanning electron microscopy (SEM). The SEM is highly sensitive to surface quality and conventional sample preparation methods used for an optical microscopy (OM) become insufficient. The thesis focuses on optimizing and finding novel metallographic methods fulfilling high requirements of the SEM imaging. It requires perfect quality surface without any damage, such as preparation artifacts and scratches. A pure aluminium has been selected as an experimental material. Conventional and advanced metallographic techniques were tested and the most promising techniques were optimized. Several surface finish techniques were examined in order to obtain a perfect quality surface, such as colloidal sillica polishing and electropolishing. The surface quality was examined by the OM, the low voltage SEM, and a confocal microscopy. Finally, the metallographic technique providing the aluminium surface with minimum defects is established.
Úplný záznam

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