National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Interaction of melted nickel alloys with materials of ceramic cores
Feller, Šimon ; Pernica, Vítězslav (referee) ; Záděra, Antonín (advisor)
This study focuses on the interactions between the IN713LC alloy and various oxide ceramics and oxide coatings commonly used for casting applications in the aerospace or medical industries. The investigated ceramics are based on SiO2, ZrO2, ZrSiO4, Al2O3 and Y2O3. An experimental design proposed for the purpose of this study produced samples used to examine the chemical composition of the metal-oxide ceramic interface. This study compares the findings from the samples with assumptions derived from thermodynamic calculations or thermodynamic conclusions stated in scientific articles with similar themes.
Microstructure of high-alloy steels
Feller, Šimon ; Bořil, Petr (referee) ; Ostratický, Marek (advisor)
This bachelor thesis concerns formation of microstructure of high-alloy steels. In theoretic part there is summary of sorting high-alloy steels, possible structures and how these structures affect qualities of steel. For practical part two small experimental casts were created, which tried to imitate composition and structure of two another, much bigger casts. Microstructure, makrostructure and grain boundary segregation were compared.