Abstract
Grain growth kinetics for 8 mol% yttria stabilized cubic zirconia (8Y–CSZ) were investigated. Optimal process parameters required to achieve a small grain size and full density for cubic 8Y–CSZ included a rapid heating rate (100°C/min) and hot isostatic pressing. Grain growth rates could also be controlled by the deliberate addition of 1 wt% of intergranular phases of borosilicate, barium silicate, and lithium aluminum silicate glasses. Lithium aluminum silicate, the intergranular phase with the highest solubility for yttria and zirconia, enhanced grain growth compared to control samples without grain boundary phases. The borosilicate intergranular phase, with the lowest solubility for yttria and zirconia, was the most effective in suppressing grain growth. Activation energies for grain growth were in the range of 400 kJ/mol, and the grain growth exponent ranged from 2 for lithium aluminum silicate containing samples, to 3 for pure samples, to 4 for barium silicate and borosilicate containing samples.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: 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.
