Abstract
In the development of tough ceramic materials, partially stabilized zirconia (PSZ) has been considered as the analogue of steels which exhibit transformation-induced plasticity. The main reason for the high strength of the PSZ system appears to be the existence of a metastable tetragonal phase which is strongly dependent on several factors such as the percentage of stabilizer, the sintering temperature, the soak time and the nature of the ZrO 2 raw material. In the present work the influence of the percentage of YO 1.5 stabilizer and sintering temperature on the tetragonal phase retention and hardness was explored. ZrO 2YO 1.5 mixtures containing 0–15 mol.% YO 1.5 were prepared, pelletized and fired at various temperatures from 1100 to 1500°C. The tetragonal phase content, density, porosity and hardness of the pellets were evaluated. It was found that the percentage of tetragonal phase increases with YO 1.5 content and decreases as the sintering temperature is increased. The effect of partial stabilization in increasing the hardness was clearly demonstrated.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.