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Crystallinity, Microstructure and Mechanical Strength of Yttria-Stabilized Tetragonal Zirconia Ceramics for Optical Ferrule

“…As clearly shown in Figure 3, the crystallinities of tetragonal (111) for the specimen B sintered at 1400˚C and the specimen C sintered at 1350˚C exhibited higher intensities than those of other samples. However, although tetragonal peak intensity of specimen B sintered at 1400˚C was comparable to that of specimen A sintered at 1400˚C, which showed a dense and compact microstructure in previous work [7], its peak intensities of monoclinic reflections, especially (110), exhibited much higher values than those of other samples. In order to compare crystalline structure, we illustrated change of tetragonality for the sintered specimens.…”

“…From previous results, we confirmed that the raw materials with fine particle size and high tetragonality could be sintered to dense Y-TZP at 1400˚C. In this work, in order to compare commercially available sample A with two raw materials (denoted B and C), which exhibited relatively good sinterability in our previous work [7], were selected for practical usage. Crystallinity, microstructure and mechanical strength were examined as a function of various sintering temperature.…”

“…Yttria-stabilized zirconia (YSZ) powders with composition 97 mol% ZrO 2 -3 mol% Y 2 O 3 have been provided by three different suppliers denoted as A, B and C (see Ref. [7]). Green bodies of the Y-TZP were prepared by mixing aqueous binder and YSZ powder at 100 ~ 150˚C for 24 hrs.…”

“…Throughout our previous work [7], we studied crystal-linity and microstructure of Y-TZP ceramics as a function of the variation of raw materials provided by different suppliers with different particle-properties. From previous results, we confirmed that the raw materials with fine particle size and high tetragonality could be sintered to dense Y-TZP at 1400˚C.…”

Yttria stabilized tetragonal zirconia ceramics: preparation, characterization and applicationspplications

“…Conventional zirconia ceramics usually have coarse grained structure. By comparing it with fine grained YSTZ ceramics, it is found that YSTZ ceramics are quite different and possess improved sinterability, mechanical properties and super plastic behavior (Yang et al, 2001). YSTZ is one of the most promising ceramic materials that are used in structural applications for its high strength and toughness.…”