engleski

The effect of thermal treatment on the structure and hardness of Co-Cr-Ti dental alloys

Thermal treatment was performed on a representative alloy at different temperatures for 10 hours followed by quenching in water. According to the results of quantitative metallography, the percentage of interdendritic region increases with the temperature of thermal treatment and also the hardness values. Data obtained by X-ray diffraction indicate that dendritic and interdendritic regions are Co-Cr-Ti solid solutions with hcp and fcc type of crystal structure at the 1000 and 800 C. However, at 600 and 400 C there is no presence of fcc phase, but the intermetallic compound Co-Cr occurs. From this study can be seen that the temperature of thermal treatment influences the crystal structure and properties of Co-Cr-Ti dental alloys.

Co-Cr-Ti dental alloys; thermal treatment; crystal structure; hardness

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