ABSTRACT
Microstructure of the dental alloy Ni-Cr-Mo Rodent after cast in the vacuum-pressure furnace has been examined. Chemical analysis by using energy dispersive spectroscopy as well as crystallographic orientations topography by using backscattered electron diffraction in the scanning electron microscope was carried out. It was found that after cast microstructure consists of dendrites of solid-solution strengthened nickel-chromium matrix (γ phase). Inside the dendrites the precipitations of molybdenum silicides, eutectics γ-P and few particles of aluminum oxide were observed. It is observed that the rising interest for cobalt-chrome and chrome-nickel alloys since they became available for dentists, which used them for casting removable partial dentures. At present these alloys have replaced the use of type IV gold ones, and almost all prostheses skeletons are made from them. Furthermore, these materials are used as substitutes for gold alloy type III [1]. Chrome-nickel and chromium-cobalt alloys are also used in metal-ceramic prosthetic restorations.
