%0 Journal Article
%T EFFECT OF SINTERING PROFILES ON THE PROPERTIES AND AGEING RESISTANCE OF Y-TZP CERAMIC
%A S. Sivakumar
%A S. Ramesh
%A K.L. Chin
%A C.Y. Tan
%J International Journal of Automotive and Mechanical Engineering
%D 2011
%I Universiti Malaysia Pahang
%X A commercially available Y-TZP ceramic powder was fabricated under four different sintering profiles in order to investigate the effects of conventional single-stage sintering (SSS) with dwell times of 1 min and 2 h, respectively, compared with two-stage sintering (TSS), on the physical and mechanical properties of Y-TZP. Sintering was performed up to 1400oC at a ramp rate of 10oC/min. It was revealed that samples sintered via TSS yielded better properties than the SSS samples sintered at 1400oC using a dwell time of 2 h. In the hydrothermal ageing test, TSS samples did not undergo low-temperature degradation via the tetragonal to monoclinic phase transformation. Nevertheless, it was found by XRD analysis that Y-TZP ceramics sintered by the SSS method using a short dwell time of 1 min were effective in maintaining tetragonal phase stability after 50 h of exposure to superheated steam conditions.
%K Single-stage sintering
%K two-stage sintering
%K mechanical properties
%K Y-TZP.
%U http://ijame.ump.edu.my/images/Volume_4/5_Sivakumar%20et%20al.pdf