Abstract
The high temperature tetragonal phase of zirconia containing 1.45∼1.60mol% of yttria can be fully retained at room temperature by rapid cooling. The metastable phase transforms into the stable monoclinic phase either isothermally or athermally depending on being heated or subzero cooled. The behavior of the isothermal transformation was studied. Dilatometric measurement resulted in a typical sigmoidal curve after some incubation time. The transformation start time exhibited a C curve in TIT diagram. The C curve shifted toward the short time side as well as toward the high temperature side with decreasing yttria content or increasing grain size. An interruption/resumption experiment of the isothermal heating revealed that the total time expended before the initiation of the transformation was nearly constant regardless of the interruption.
Sign-in/Register to access full text options 
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.
